X-rite colorchecker passport update


Im still experimenting with this camera profiling kit and have done some work on the strong reds.

My initial analysis was that some saturation was increased using the profile I built and in the case of reds was causing some clipping. All files were coverted to 16 bit and the Adobe 1998 colour space.

When I tried the conversion into the larger pro photo colour space I got a big surprise, it looks like the profile has found a lot of colour detail outside the Adobe 1998 colour space (see the diagram above, the dots represent colour in the file and the solid object is the Adobe 1998 colour space).

In the Pro Photo Colour space there is no clipping, just extended colour…

When I use the standard Adobe camera profile and convert to Pro Photo the colour just about creeps out of the Adobe 1998 colour space so it looks like the custom profile really is getting some extra range out of the camera.

In order to get the advantage of this extended range it looks like I may need to convert and retouch in the Pro Photo colour space, I can always convert to Aobe 1998 with perceptual rendering if clients request.

This could be very useful for me helping clients who do copy work, will need to experiment some more…

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