ACRcalibrator for camera calibration

[johnastovall]

In the past it appear that unless you were shooting in very controlled conditions it wasn't worth it. But now Chomohalics have a system that is free and works under must all conditions but tungsten which takes a different calibration.

I've ordered a GTM color chart and am going to try it...

Luminous Landscape is running a three part series on camera calibration, the last frontier for a fully color managed work flow.

[jeffkohn]

That script has been available in beta form for a couple years now, we've discussed it here in the past. IMHO this calibration method works better than trying to create a camera profile as some other packages support (which really is just about useless outside of a highly controlled studio).

Watch the saturation numbers though, the script will produce saturation settings that when used with real world images tend to produce over-saturated images. This is because the tonal controls on the Adjust tab are applied after demosaicing and can have a big impact on saturation. The low shadows/contrast settings the script uses for the test chart cause it to be undersaturated, so the calibration routine ends up compensating for that. It's the Hue sliders that really matter.

[jhom]

The new verison appears to work well. Tom has improved his site with welcomed additional information about the script and its uses. There is also a forum to post to. I created two profiles, one set at daylight and the other at tungsten. The calibration helps the anemic reds of the 1D2.

[srwatters]

What Jeff (the ACR God) said.

BTW, I was able to calibrate my FujiFilm S5 Pro all by myself this time thanks to Jeff. I must confess to using his numbers for both my D70 and D200 :wimp:

The 'new' software rocks and runs very quickly on my Mac Pro with ACR4 and PSCS3