I wish to start this thread to discuss about Color Calibration using the new integrated functions of Phocus or the other system that permit to obtain as precise as possible colors.
The latest version of Phocus introduced this feature that I found very easy and friendly for the creation of a custom profile.
Why creating a custom profile ?
since the camera (in my case the H5D-50c) is already profiled trough the HNCS and the color correspondence is very good, sometime there is the need to improve the results, especially for difficult color such as Brown and some skin tone, especially with background and light that diffuses a tone that can degraded the color accuracy.
First I would like to introduce my flow of the works :
- Set preparation
- Color Checker shot
- White balance
- Color checker Profile (of the white balanced image)
- New made Profile applied to the image
- White balance check with the new profile created
- Image enhance trough Exposure / Saturation / High light Recovery
- Export to PS for finishing.
In this workflow I omit the scene calibration procedure.
I put the color checker angled to avoid the yellowish light from the table.
on the left there is the final image that I retain to be as much color precise as possible comparing the real color of the things with what i've see using a calibrated display (a NEC Spectra View Reference 271).
The difference is here:
The shot on the right is using the created profile....
Well, it's quite difficult to see large differences but the colors are truly more precise and is clear that there is more red and less Yellow in the right image, especially looking at the knife wood.
As told, brown color are really difficult to reproduce and for them sometime also a good white balance is not sufficient.
And now the questions:
- What do You think ?
- There are other ways to obtain a good calibration instead of this way ?
- I miss something ?
I include the final image after some resize and PS finishing...
Let me have Your opinions / suggestions.
Kindest regards, Domenico.