Spectral Sensitivity Data for the a7r[1]?

[Hening Bettermann]

Are there really none available anywhere? I can't find any googling.
Thank you for your input!

[ErikKaffehr]

Hi,

That stuff is hard to find… Sorry. I would be very happy if someone had to share.

It could be measured with a monochromator, but you need to calibrate the monochromator. That is the hard part.

Best regards
Erik

[Hening Bettermann]

Thanks for your comment, Erik. OK I'll settle with my ColorChecker based profile then...
Good light!

[ErikKaffehr]

Hi,

Anders Torger, the author of DCamprof, says that the standard colour checker is quite OK for profiling. But, whatever target it seems it is very important to eliminate reflections of surrounding light.

I have sent some shots of an IT-8 target to Anders, and I got the impression that the IT-8 contains some very saturated colours that are not very helpful in profiling.

I am looking into generating some new colour profiles for my A7rII in the Christmas holidays. But, I am quite happy with the colour rendition I have, so I am in no hurry.

Best regards
Erik

Thanks for your comment, Erik. OK I'll settle with my ColorChecker based profile then...
Good light!