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TAKE CONTROL OF COLOUR...
Overview
The Light Illusion LightSpace CMS (Color Management System) User Manual information is split into various component parts.
The aim is to provide quick references to specific menu/button options and functions by using clickable images of the various menus, and also provide a real step-by-step guide to performing the various workflows involved in LUT manipulation, Calibration, and Profiling.
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To Start
When installed and started the program will offer the chance to register and license. If the program has been purchased, and is not being used just for evaluation, follow the registration instructions for the options purchased.
For demo purposes, continue without licensing, just using registration, which will give 14 days usage to allow the various capabilities to be explored. During demo use the system will generate LUTs with a random watermark consisting of a 'solarization' look throughout the image (Click here to see an example of the watermark), as well as showing LUT Previews with black dots scattered throughout the displayed image.
With the optional components, including Calibration Interface, LUT Burn-in, Colour Space Conversion, LUT Manipulation, and Profiling (Display Characterisation) & Profile Management, some functions will operate, although with limited menus control, and with a virtual probe for calibration and profiling. The 3D graphical LUT and 1D Ramp displays will function fully.
Registration details (and the option to register at a later date) are always available via the 'help\license' menu.
PC Requirements
Please note that LightSpace does not require a very powerful PC, but it does need enough RAM to stop the PC going into paging mode (memory swapping/virtual memory). This is required to maintain accurate timing when performing display characterisation/profiling. As a general rule of thumb 2G RAM minimum is recommended, and it is best to check that when LightSpace is running that the physical memory usage is well below 50% of the available memory.
LightSpace is a Windows program, and although it can be used on Mac via Parallels or similar this use is not guaranteed.
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Menu Options
Use the following menu bar to explore the various options - clicking on a menu or button will take you directly to an explanation of its functions.
Note: if you do not have a LUT active within LightSpace some options will not be visible. Press the 'New' button ('File|New' from the menus) to set a default unity LUT
Click any menu name or button so see details of its use
File Menu
File displays a drop-down menu with a number of file management options.
Click a menu above see the options and functionality.
(Return To main Menu Options)
New
Creates a New default LUT image with unity (bypass) values, ready for additional manipulation, either with LightSpace or via external systems.
(Return To File Menu Options)
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LUT Image
The LUT image concept is the basis for most LUT functions within LightSpace CMS. The LUT Image is a graphical image that represents the LUT data, and can be used for manual LUT manipulation via any colour program, such as Photoshop, and to RIP LUTs from other incompatible (eg. encrypted LUT) systems. A reference image can be inserted into the central black space for visual reference of any colour change applied to the LUT - Marcy for example.
For more information on using the LUT Image see the LUT Image Manipulation page.
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Open
Open an existing image based LUT in dpx or tif/tiff format. Selecting it will start a normal Windows based 'open' dialogue box with which you can navigate to the image based LUT to open (load).
(Return To File Menu Options)
Close
Will close the presently active LUT within LightSpace. If you have made any changes to the LUT since it was last saved, using any of the LUT manipulation tools, you will be asked if you wish to save the LUT image, with the changes included, as a dpx or tif/tiff image before closing.
(Return To File Menu Options)
Save
Will save the present LUT image. If a previous save has been performed it will overwrite the same image, or will pop-up a standard Windows 'save as' dialogue box to allow navigation to a location to save within, as well as allowing a new name for the LUT image to be specified.
(Return To File Menu Options)
Save As
Will save pop-up a standard Windows 'save as' dialogue box to allow navigation to a location to save the LUT image within, as well as allowing a new name for the LUT image to be specified.
(Return To File Menu Options)
Import
Imports a data LUT file (text based) and generates a LUT image representing the LUT settings. This is the basis for all LUT conversions and manipulation of existing LUTs. If you attempt to load a LUT that is incompatible with LightSpace a warning message will be displayed. Please send any such LUT to Light Illusion so the formats can be added in future releases.
(Return To File Menu Options)
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LUT Formats
The LightSpace CMS system is compatible with as many LUT as possible - but new LUT formats are turning up all the time. If you find a LUT format that will not load send it to us and we will add the format, if at all possible (ie, it's not encrypted), in the next release.
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Export
Will export the present active LUT in any of the selected formats from the options window that pops-up. Select as many formats as required and then navigate to the location to save them in. The selected LUT formats will be remembered the next time the Export menu is activated. Use 'Select None' to re-set the list to nothing selected. By default the active LUT name is used as a prefix for the saved LUT(s). This can be overridden with the lower text entry box.
(Return To File Menu Options)
Recent LUT Image Files
This list of recent LUTs will vary depending on what LUT images have been previously opened and saved. It provides shortcuts to the most recent LUTs.
(Return To File Menu Options)
Exit
Ok, I'm guessing you can work this one out for yourself...
Return To main Menu Options
Edit Menu
The Edit menu displays a drop-down menu with a number of controls for LUT editing and management.
(Return To Main Menu Options)
Undo & Repeat
The Undo function will undo the very last process performed, while the Repeat function will re-do the undone process. Therefore the Repeat function will only become active if Undo has been used.
(Return To Edit Menu Options)
LUT Manipulation
The LUT Manipulation option will drop down a new menu with ten direct LUT manipulation tools - Pre-Pend, Filters, Printer Lights, Lift, Gamma, Gain, HSL, Addition, Subtraction and Invert.
(Return To Edit Menu Options)
Pre-Pend
The pre-pend function is a very powerful LUT manipulation tool that allows a manipulation function to be added to an existing LUT in advance of the actual LUT function. For example, a LUT that has been generated for uses on LOG images can be quickly converted for use on LIN light images, or TV gamma images, etc.
(Return To LUT Manipulation Menu Options)
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Pre-Pend Control
The pre-pend functions add the desired function as an 'input' to the current LUT, assuming the source space of the current LUT is correct for the selected Pre-Pend function.
For example, if you have a print->monitor LUT and you pre-pend this with lin->log, it will modify the cube to accept linear light data. In this case, 0.0->1.0 is mapped to 95-685 in log space. As a note, in linear light space, doubling the value makes the image twice as bright, and is the same one stop. Values in linear light above 1.0 are mapped to codes above 685. Codes are clipped at 1023.
If you select vide->log, then the cube is pre-pended by a gamma 0.45, which goes from video to linear light, then passed into a lin to log mapping, as above.
If you pre pend with lin->vide, it assumes the current LUT input is video, and adds 0.45 gamma to the input.
All of the 6 Pre-Pend functions follow this basic pattern.
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Filters
The Filters menu enables any given LUT to be adjusted by one of three Blend filters. The Blend filters all work on the grey axis of the LUT, altering the grey scale colour balance, with varying effect on the associated colour gamut values. So see more on the action of each Filter click on the filter name.
(Return To LUT Manipulation Menu Options)
Mono Blend
The controls of Mono Blend will 'normalise' the LUTs grey scale, and the colour values within the same brightness range. The Low colour values set the range for total mono values, while the High values set the blending range. Separating the RGB sliders allows the amount of blending to be adjusted independently for RGB values.
(Return To Filters Options)
Grey Blend
The controls of Grey Blend will 'normalise' the LUTs grey scale, and the colour values within the same brightness range. The Low colour values set the range for total mono values, while the High values set the blending range. Separating the RGB sliders allows the amount of blending to be adjusted independently for RGB values.
(Return To Filters Options)
Axis Blend
The controls of Axis Blend will 'normalise' the LUTs grey scale, without major effect on the colour values within the same brightness range. The Low colour values set the range for total mono values, while the High values set the blending range. Separating the RGB sliders allows the amount of blending to be adjusted independently for RGB values.
Looking straight down the grey axis of a cube, with black near you, and white furthest away, the Axis Blend filter creates a tube/pipe around the grey axis of radius 'Blend'. Points on the black/white axis are averaged to grey. Values inside the tube are blended with the grey value and their original value, depending on how far from the axis the colour points are.
A 'Blend' value of 1.0 will give a tube that just touches the 6 surrounding colour points (1 step, r,g,b,c,y,m). So this will only affect the grey axis points. Values greater than 1.0 push the effect colours further out into the cube.
(Return To Filters Options)
Smooth
The controls of Smooth will allow any given LUT to be 'smoothed', removing kinks and distortions within a LUT from poor probe readings, etc. The 'Low' RGB sliders set the range for smoothing from black towards white, while the High RGB sliders set the blending range into non-smoothed values. Separating the RGB sliders allows the amount of smoothing to be adjusted independently for RGB values.
The Radii sliders control the volume of smoothing.
(Return To Filters Options)
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Filter Blend Controls
The Filter Blend LUT manipulation tools are a very powerful addition to LUT manipulation, and help overcome errors encountered with probes that have poor black, or low-light, measurement capability.
The blend controls allow the direct alteration of the RGB component of the LUTs grey scale, with varying effect on the associated brightness level colour component of the LUT.
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The above 1D graphs show grey scale correction for a film print LUT. This effect on the black/white axis of the LUT is the same for all the filters, with the effect on the colour component of the LUT varying with the selected filter.
Mono Blend will reduce all the colour component of the LUT within the range selected by the filter sliders to zero. This can be very helpful in removing unwanted colour contamination from with the dark levels of a given LUT/display. If all sliders are set to Max values the resulting LUT will totally de-saturate an image, while maintaining the underlying gamma value.
Grey Blend will normalise the colour component of the LUT, again within the range selected by the filter sliders. If all sliders are pushed to max values the LUT will have no effect on colour gamut (saturation) or colour temperature, while maintaining the underlying gamma of the LUT.
Axis Blend is probably the most useful of the Filters as it attempts to maintain the underlying colour component of the LUT, while normalising the grey scale within the range selected by the sliders.
Smooth is equally useful as it allows the underlying LUT gamma and gamut components to be 'smoothed' within the range selected by the sliders.
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The above 1D graphs show the effect of smoothing.
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Printer Lights
The Printer Light controls enable any given LUT to be directly manipulated in exactly the same way as when altering a film print via printer light control. For example, adding 3 points of Red to a LUT will reduce the amount of red in the final image as viewed through the LUT.
(Return To LUT Manipulation Menu Options)
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Printer Light Control
Printer Light LUT manipulation tools are very powerful manipulation controls that can greatly enhance the use of LUTs and of LightSpace CMS.
Printer Light manipulation allows the direct alteration of the RGB component of any LUT to adjust the overall LUT colourimetry. This has many applications, including for on-set Look workflows.
The manipulation math's is based directly on film grading Printer Lights, and therefore expects the LUT to be a LOG based film look LUT.
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Lift
The Lift controls enable the shadow areas of any LUT to be directly manipulated, either as locked or individual RGB values. For example, adding to the amount of blue within the shadow area in the final image as viewed through the LUT.
(Return To LUT Manipulation Menu Options)
Gain
The Gain controls enable the highlight areas of any LUT to be directly manipulated, either as locked or individual RGB values. For example, adding to the amount of green within the highlight area in the final image as viewed through the LUT.
(Return To LUT Manipulation Menu Options)
Gamma
The Gamma controls enable the mid-tone areas of any LUT to be directly manipulated, either as locked or individual RGB values. For example, subtracting the amount of red & green within the mids in the final image as viewed through the LUT.
(Return To LUT Manipulation Menu Options)
HSL
The Hue, Saturation, & Lightness controls enable the direct control of those values within any LUT, dynamically altering the final result. For example, altering the amount of Hue rotation, Saturation and Lightness within the final image as viewed through the LUT.
(Return To LUT Manipulation Menu Options)
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Lift, Gain, Gamma, & HSL Controls
The Lift, Gain, Gamma, & HSL LUT manipulation tools are additional, and very powerful, LUT manipulation controls that can greatly enhance the use of LUTs and of LightSpace CMS.
The manipulation controls allow the direct alteration of the RGB and HSL components of any LUT to adjust the overall LUT colourimetry, as defined by the control name. Such control has many applications, including for on-set Look workflows.
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LUT Addition
LUT Addition will open a standard Windows dialogue box to allow you to navigate to a LUT file, either as a data (text) file LUT or as an Image LUT, using the file types drop-down menus on the navigation window. The selected LUT will then be added to (concatenated with) the presently active LUT within LightSpace.
This is a very powerful function and can be used concatenate a selection of different LUTs. For example, to add a Rec709 calibration LUT to a Log profile LUT to generate a LUT providing the combined two characteristics.
(Return To LUT Manipulation Menu Options)
LUT Subtraction
The LUT Subtraction menu will open a standard Windows dialogue box to allow you to navigate to a LUT file, either as a data (text) file LUT or as an Image LUT, using the file types drop-down menus on the navigation window. The selected LUT will then be subtracted from the presently active LUT within LightSpace.
This is a very powerful function and can be used subtract a selection of different LUTs from each other. For example, to subtract a Rec709 calibration LUT from a Log profile LUT that is calibrated for a Rec709 display to generate a LUT with the Log profile data only.
(Return To LUT Manipulation Menu Options)
LUT Invert
LUT Invert menu will invert the presently active LUT within LightSpace. This is a very powerful function, but needs to be used with an understanding of the limitations of inverting a LUT.
(Return To LUT Manipulation Menu Options)
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Inverting LUTs
The main problem with inverting a LUT is with edge boundary excursions beyond the cube colour space if the original LUT was making major gamma/gamut changes. The inversion of such a LUT will clip data at the cube boundaries. Because of this, inversion of a complex LUT is not a recoverable process - re-inverting an inverted LUT will almost never get you back to the original LUT, unless the original LUT was a very mild LUT!
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ASC CDL
The ASC CDL menu provides a range of controls to adjust an existing LUT, using standard CDL tools, including Slope, Offset, Power & Saturation.
(Return To Edit Menu Options)
Include Reference Image
The Include Reference Image menu is an on/off selection that modifies the LUT Manipulation menu functions. If ticked the LUT Manipulation functions will also be applied to any reference image that has been inserted into the main image LUT. If not ticked, the functions will only be applied to the LUT component of the LUT image (the multi-coloured columns), and hence the LUT data. Any inserted reference image will not be effected.
(Return To Edit Menu Options)
Image Menu
The Image menu displays a drop-down menu with a number of controls for the display of images within LightSpace.
(Return To Main Menu Options)
Zoom
The zoom function displays a new drop-down menu with a selection of zoom values for the LUT Image display within LightSpace. The values will be applied to the active LUT Image if multiple LUT Images are open within LightSpace.
The active zoom level is shown by the 'tick', with Fit To Screen being the default. Larger zoom values can be useful to examine the LUT Image in more detail, especially any inserted Reference image.
(Return To Image Menu Options)
Reference Image
The Reference Image function displays a new drop-down menu with a couple of option allowing a reference image to either be inserted into, or removed fro, the LUT Image. The function will be applied to the active LUT Image if multiple LUT Images are open within LightSpace.
(Return To Image Menu Options)
Insert Reference Image
The Insert Reference Image function allows any image to be inserted into the LUT Image as an aid to LUT manipulation. This is a very useful capability, and the various options need to be understood to get the most from it.
(Return To Reference Image Menu Options)
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Using Reference Images
As a very basic tool, an inserted reference image can be used to see any changes made to the default LUT Image via external colour systems, or when ripping a LUT.
So, for example, if you select 'New' to make a new default (unity/bypass) LUT Image with the aim of using it to RIP a LOG based LUT from another system - because the existing LUT is encrypted or LightSpace is not yet able to load the LUT - directly - adding a LOG reference image, such as a Marcy, will immediately show the effect the LUT being ripped.
An alternative use is to again make a 'New' LUT Image and insert a Marcy image, but this time apply a existing LUT directly - but not by using 'Import' - but through the use of 'Edit/LUT Manipulation/Add LUT' function. If the 'Include Reference Image' is ticked the LUT will be added to both the LUT Image and the Reference Image. If the 'Include Reference Image' option is not ticked the LUT will be added just to the LUT Image, not the reference image. This can be very useful when importing LUTs that require further manual changing.
The ability to manually alter an existing LUT is a key function of LightSpace, and is worth exploring further.
If working on a project where it is obvious the calibration LUT is not accurate - say too red in the shadows - the above process can be used to manually alter the LUT. Follow the above procedure, but substitute the Marcy image with a reference frame from the project where the problem is obvious. Either use a reference frame with the LUT already applied, and then use 'Edit/LUT Manipulation/Add LUT' with the 'Include Reference Image' not ticked, so the Image isn't double lutted, or use an image without the LUT previously applied, and Add the LUT to both the LUT Image and the Reference Image. The resulting LUT Image combination can then be 'Saved As' and the new image, in dpx or tif/tiff format taken to any colour correction system (including Photoshop) and the available tools used to remove the red from the shadows. This new colour corrected image is then loaded back into LightSpace for a new text LUT to be exported.
For more information on this workflow see the LUT Image Manipulation page.
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Clear Reference Image
Clear Reference Image clears the present image, so an alternative can be inserted if required.
(Return To Reference Image Menu Options)
Comment
The Comment function displays a new drop-down menu with a couple of option allowing a text comment to either be inserted into, or removed from, the LUT Image. The comment will be applied to the active LUT Image if multiple LUT Images are open within LightSpace.
(Return To Image Menu Options)
Insert Comment
As should be expected, Insert Comment allows a text comment to be inserted into the LUT Image at the bottom. The LUT Image name will also be inserted at the top of the LUT Image. This name will either be the name of the imported LUT, or a simple 'ImageN', with 'N' being an incremental number, if the LUT Image is a 'new' LUT. This name can be changed by 'saving as' the LUT Image with a new name, and then re-importing it.
(Return To Comment Menu Options)
Clear Comment
The Clear Comment command will remove any previously inserted comments, including the LUT name added to the top of the LUT Image.
(Return To Comment Menu Options)
View Menu
The View menu displays a drop-down menu with a number of controls for the display of images within LightSpace.
(Return To Main Menu Options)
View Mode
The View Mode function will open a new drop down menu with the three view options for creatively viewing the presently active LUT.
(Return To View Menu Options)
Colour Bar
The Colour Bar view mode for the active LUT is the default LUT Image mode, showing the LUT data as coloured columns, with any inserted reference image.
Right clicking on the LUT Image when in this view mode will bring up a floating version of the Image Menu.
(Return To View Mode Menu Options)
3D Cube
The 3D Cube view mode shows an interactive 3-dimensional graphic of the LUT, which can be rotated in 3D space, zoomed, etc.
Right clicking on the 3D Cube when in this view mode will bring up a floating window menu with options for changing various parameters of the display.
(Return To View Mode Menu Options)
1D LUT View
The 1D LUT View mode shows an interpolated graphic of the 3D LUT as a 1D LUT.
Right clicking on the 1D LUT when in this view mode will bring up a floating window menu with options for changing various parameters of the display.
(Return To View Mode Menu Options)
LightSpace Bar
The LightSpace Bar options is an on/off menu that will enable or disable the LightSpace direct access graphics menu bar, with the main 'new/save/import/etc functions shown as graphics buttons.
(Return To View Menu Options)
Tools Bar
The Tools Bar option is an on/off menu that will enable or disable the Tools direct access graphics menu bar, with the main 'Calibration Interface/Display Characterisation/Network Manager/etc functions shown as graphics buttons.
(Return To View Menu Options)
Manipulation Bar
The Manipulation Bar option is an on/off menu that will enable or disable the Manipulation direct access graphics menu bar, with the main 'Addition/Subtraction/Invert' functions shown as graphics buttons.
(Return To View Menu Options)
Status Bar
The Status Bar option is an on/off menu that will enable or disable the lower Status bar, which provides feedback on the present status of a process, as well as tool-tips for menu items when hovered over.
(Return To View Menu Options)
Cascade
The Cascade menu selects the display mode for any active LUT Images to be in 'Cascade' form, allowing all active LUT Images to be seen quickly.
(Return To View Menu Options)
Tile
The Tile menu selects the display mode for any active LUT Images to be in 'Tile' form, allowing all active LUT Images to be seen side-by-side.
(Return To View Menu Options)
Active LUT Image
The lower group of menu entries shows the LUT Images presently loaded within LightSpace, enabling any LUT to be directly selected as the active one.
(Return To View Menu Options)
Tools Menu
The Tools Menu is dedicated to all the image processing capabilities of LightSpace, As well as its Calibration and Profiling capabilities.
(Return To Main Menu Options)
Please see the Probe Integration Manual for further details on Calibration and Colour Space menus.
LUT Preview
The LUT Preview Menu opens a standard navigation window that enables the user to select any image to preview the active LUTs within LightSpace. When the image is selected a new LUT Preview window will be displayed.
(Return To Tools Menu Options)
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LUT Preview
The LUT Preview option is another facility with more capability than it's basic application. It will show all the LUTs presently loaded in LightSpace via the tabs along the top, but can also directly load additional LUTs into the preview window via the '+' tab. Moving the mouse cursor over the image will display a 'zoom' magnifying glass icon, and left clicking will zoom the image to show it 1:1. Right clicking will show a 'Save Image As...' dialogue box, and selecting this will save the image with the active LUT burnt-in, so it can be reviewed outside of LightSpace. This is a quick and easy way to apply different LUTs to an image for review externally.
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LUT Burn-in Menu
The LUT Burn-in Menu opens a new window with options to burn LUTs into selected images, or a range of image, with additional tools for image format conversion, size alteration, pixel aspect ratio changes, sharpening, etc.
(Return To Tools Menu Options)
List Control Options
The List Control options enable the list of images for LUT Burn-in to be managed. They should be fairly self explanatory.
Add Image: opens a standard navigation window to allow an image to be added to the list for LUT Burn-in.
Add Folder: opens a different navigation window to all a whole folder of images to be added to the list of images for LUT Burn-in.
Image View: opens the LUT Preview window allowing the selected image (you must select an image from the list first) to be seen with any LUT applied.
Remove Image: will remove the selected image from the list.
Remove All: will remove all images from the list.
(Return To LUT Burn-in Menu)
Image Format Options
The Image Format options control the format of the new output images after the LUT Burn-in process has completed. The drop down list provides access to the available formats, including dpx, cin, jpg, tif, etc.
(Return To LUT Burn-in Menu)
Image Size Options
The Image Size options control the size of the output images after processing. This area is split into three main areas, with basic size setting being the first.
Keep Original Size: simply changes nothing.
Resize To (%): re-sizes the image to a user defined percentage value.
Select a Format: uses a drop down list to select a predefined size format; 2K; PAL, NTSC, etc.
Custom Width: allows direct user values for width and height. This option also activates the options below to help define exactly what is being selected/re-sized.
(Return To LUT Burn-in Menu)
Source area Options
The Source Area options are associated with the above Image Size/Custom Width setting. The available options allow selection of different areas of the input image to be defined, as well as how the selected area is mapped to the new output image.
Source Area: allows the selection of the start XY coordinates of the image (in pixels) as well as an XY offset.
Pixel Aspect Ratio: alters the output pixel aspect ratio, to allow for conversion from spherical to scope (anamorphic) for example.
Crop Aspect Ratio: allows for cropping of areas outside of the image when changing pixel aspect ratios.
(Return To LUT Burn-in Menu)
Fit Mode
The Fit Mode options are again associated with the above Image Size/Custom Width setting. The available options allow selection of different ways to 'fit' the image into the new aspect ratio.
Cut: will fit the smaller width or height value to the new image format, cutting off the larger image dimension that overlaps the new image area.
Box: will fit the larger width or height value to the new image format, and fill the space around the smaller image dimension area.
Stretch: will fit both height and width by stretching the source image to fit.
(Return To LUT Burn-in Menu)
Image Options
The Image Option tools provide user definable image sharpening, using radius and sigma to set the amount of sharpening.
(Return To LUT Burn-in Menu)
Burn-in
The burn-in button starts the LUT burn-in process, using the various setting selected.
(Return To LUT Burn-in Menu)
Cancel
I guess you get this one...
(Return To LUT Burn-in Menu)
Select LUT for Burn-in
The Select LUT for Burn-in options allow the selection of any LUT from within LightSpace via the drop down list, or for external LUTs to be imported via the 'folder' button.
(Return To LUT Burn-in Menu)
Batch LUT Conversion
The Batch LUT Conversion Menu opens a new window based on the LUT export menu, but with the ability to navigate to a folder with a batch of LUTs contained within for conversion to any selected new LUT formats.
(Return To Tools Menu Options)
ASC CDL Batch Conversion
The ASC CDL Batch Conversion Menu opens a new window with the ability to navigate to an ASC CDL file (.ccc or .cdl) and for the colour data within the CDL file to be converted in to a batch of LUTs, selected via the LUT format options.
The 'Select LUT for Burn-in' option allows any LUT to be used as a final stage burn-in, concatenating the selected LUT with the CDL converted LUTs.
(Return To Tools Menu Options)
Help Menu
The Help menu displays a drop-down menu with a number of options providing information and help regarding LightSpace CMS.
(Return To Main Menu Options)
LightSpace Manual
This menu takes you to this on-line manual. I hope it has been of help.
(Return To Help Menu Options)
Probe Integration Manual
This menu takes you to the on-line manual for probe integration, calibration, profiling, and automated LUT building.
(Return To Help Menu Options)
Licence
The License menu calls up a window that shows you license details specific to the software's installation.
(Return To Help Menu Options)
Check For Updates
I'm hoping the give away is in the name :o)
(Return To Help Menu Options)
About
The About menu calls up a window that shows information on the specific LightSpace CMS software version, etc.
(Return To Help Menu Options)
Calibration Interface
The Calibration Interface Menu brings up a windows containing the Calibration tools within LightSpace.
Please see the Probe Integration Manual for further details.
(Return To Main Menu Options)
Display Characterisation
The Display Characterisation Menu opens a window containing the tools for display Profiling.
Please see the Probe Integration Manual for further details.
(Return To Main Menu Options)
Network Manager Menu
The Network Manager Menu opens a window allowing network connected systems (PC, Mac Linux) to be profiled using LightSpace's included Java Application.
Please see the Probe Integration Manual for further details.
(Return To Main Menu Options)
Convert Colour Space Menu
The Colour Space Conversion Menu opens a window that enables colour space conversion LUTs to be automatically generated.
(Return To Main Menu Options)
Additionally, colour space conversion is also used to build calibration LUTs from different display profiles.
Please see the Probe Integration Manual for further details on working with profiles.
Name
The Name box allows a user name to be entered for the new Colour Space Conversion LUT about to be generated.
(Return To Convert Colour Space Menu Options)
Source
The Source menu area contains a selection of options associated with the colour space given images are presently intended to be seen in. A drop-down selection window shows the pre-sets LightSpace comes with, including standard video and digital projection colour spaces. A 'Custom' selection allows the user to enter their own data should a different set of colour space values be required. This custom colour space can be saved via the 'save' button, and given a user name. The new Colour Space will then appear within the drop-down menu.
(Return To Convert Colour Space Menu Options)
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Using Convert Colour Space
The Convert Colour Space menu is a key component of LightSpace CMS, especially when using it for building calibration LUTs from display profiles. The concept of 'Source' colour space is always the expected colour space any given images are expected to be viewed in. So, for example, normal video will usually be expected to be viewed in Rec709 colour space, making this the Source colour space to select.
The 'Destination' colour space is the new colour space the given images now need to be seen in - an alternative colour space to their original 'Source' colour space.
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Destination
The Destination menu area contains a selection of options associated with the new 'Destination Colour Space' given images are intended to be seen in, as apposed to their original 'Source' colour space. A drop-down selection window shows the pre-sets LightSpace comes with, including standard video and digital projection colour spaces. A 'Custom' selection allows the user to enter their own data should a different set of colour space values be required. This custom colour space can be saved via the 'save' button, and given a user name. The new Colour Space will then appear within the drop-down menu.
(Return To Convert Colour Space Menu Options)
Out of Gamut
The Out of Gamut tick box will generate a LUT that shows where areas in a given image made using the 'Source' colour space will exceed the new 'Destination' colour space when such a colour space conversion LUT is applied to the given source images.
(Return To Convert Colour Space Menu Options)
Peak Luma or Chroma
The Peak Luma or Peak Chroma drop down menu alters any LUT generated to use Peak Luma or Peak Chroma as the basis for the calculation. Peak Chroma should normally be used for matching one display to another, while Peak Luma should be used when matching a display to a film print profile.
(Return To Convert Colour Space Menu Options)
Create New
The Create New button will generate a new LUT Image using the Source and Destination colour spaces selected.
(Return To Convert Colour Space Menu Options)
Use Existing
The Use Existing button provides a drop down menu with two additional options.
(Return To Convert Colour Space Menu Options)
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Use Existing
The Use Existing options enable a colour space conversion to be concatenated (added) to an existing LUT This is a very powerful tool as it enables a calibration LUT made for one colour space to automatically be converted to a calibration LUT for a different colour space, without any intermediate process, so maintaining the best LUT quality possible.
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Apply to the Image
Apply to the Image will apply the colour space conversion to presently active LUT Image and any associated reference image that has been inserted.
(Return To Use Existing Menu Options)
Apply to the Data
Apply to the Data will apply the colour space conversion only to presently active LUT Image, and NOT to any associated reference image that has been inserted.
(Return To Use Existing Menu Options)
Cancel
You really don't expect me to explain this, do you?.
(Return To Convert Colour Space Menu Options)
Manage Colour Spaces
The Manage button opens a new library window where you can manage (import/export/rename/display/delete) any custom colour spaces that have been generated. In the image below a profile measurement is highlighted.
(Return To Main Menu)
The Manage window is used to manage all colour space data and display profiles generated by performing a Quick Profile, Display Characterisation, or via film profiling.
Display Profile
The Display button opens a new window showing the profile data as Gamut and Gamma graphs.
 
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Profile Displays
The 'Display' capability allows any display profile to be seen as Gamut and Gamma graphs, showing the actual data measurements plotted against an colour space preset (including saved user pre-sets).
This display capability shows the underlying projector or monitor gamut and gamma, helping understand what future calibration will be capable of.
For example, the above gamut show a monitor profile matched to P3-D65 colour space, and blue and green are specifically out of gamut, and therefore no LUT or calibration will ever bring this back into gamut.
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As with everything to do with Light Illusion, Steve is more than happy to answer questions - feel free to contact him on: steve@lightillusion.com.
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