Sony CineAlta and Canon EOS Gamma Curves
The Light Illusion Gamma Curves attempt to maximise the capture capabilities of the Sony CineAlta and Canon EOS cameras, enabling the most to be made of the images in later post-production.
The BBC have, on a couple of occasions, requested modified curves to meet their specific requirements for their wild-life programs. Shooting on Planet Earth has been a great example.
The selection of Gamma Curves curves provided by Light Illusion range from ones aimed at generating a pleasing image 'in-camera' without the need to perform too much (none in some cases) post-production colour correction, through to curves that generate extremely low-contrast, high-dynamic range images that emulate the capture process of film negative, and require post-production manipulation (just like film printing!) to generate a final usable image.
From: £29.00 ex. VAT
Each Gamma Curve package contains a selection of curves, with each Sony package containing 4 sets of 5 curves, and the Canon package contains 4 curves, with a selection of 5 LUT that can be used in conjunction with the curves. There are no LUTs supplied with the Sony packages.
Light Illusion Gamma Curve Features
The features of the Light Illusion Gamma Curves depend on the choice of Sony CineAlta or Canon EOS versions.
The low-contrast curves are recommended primarily for when capturing to low compression, high bit-depth recorders (such as D5, HDcam SR, or to disc), with f900 cameras. With the 10bit 4:4:4 cameras there are no issues (although see note on f950 at the end of this page.) The reason for saying this is to minimise any issues with banding and other potential artefacts due to low bit depth and compression based recording.
However, a lot of f900 8bit (internal HDcam tape recording) work has been done with the full low-contrast curves - just ask Geoff Boyle, Gruppenführer of the world renowned CML discussion forum.
Compatible Sony CineAlta cameras include:
While there are limits as to the amount of improvement that can be made with these cameras, using in-camera Gamma Curves helps a lot as they are applied to the image as it is read from the image sensor, pre-compression, and so the advantages are obvious.
Compatible Canon cameras are any that are EOS Picture Style compatible, including:
- 1D Mark IV
- 5D Mark II
The LUT data is provided in generic form, and will require the use of a LUT converter, such as LightSpace LUTs, to convert into the specific LUT formats for use with different DI and grading systems, LUT Boxes, etc.
Additional Technical & Support Info.
User Guides: Sony Gamma Curves User Guides
User Guides: Canon EOS Gamma Curves User Guides