Re: Camera Profiling
Re: Camera Profiling
- Subject: Re: Camera Profiling
- From: Ben Goren <email@hidden>
- Date: Fri, 30 Jul 2010 10:03:27 -0700
On 2010 Jul 29, at 8:00 AM, Ben Goren wrote:
> My ColorChecker Passport arrived yesterday, and I hope to get a chance to put it and its software through its paces sometime today or tomorrow.
I just did, and the results using the Passport and the Passport software are much superior:
> Profile check complete, peak err = 1.825471, avg err = 0.267155
Those are Delta E units from ArgyllCMS at the end of the profile creation routine. (I'm not sure which flavor of Delta E Argyll is using here, but with those numbers, I really couldn't give a damn.)
Visually, flipping back and forth between straight-out-of-ACR and profiled-with-Argyll versions shot under modeling lights and strobes, the straight-out-of-ACR versions would pass the ``quick glance'' test. If you were photographing your aunt's oil paintings and didn't bother with profiling the input, so long as the rest of your workflow is good, she might not notice (and her husband certainly wouldn't).
I need to do some for-real tests, especially once I've built my own chart, but I think this is about as good as one is going to get short of the kinds of spectral reproduction work that Dr. Burns is working on.
So, to summarize: follow the recipe in my previous email but use the ColorChecker Passport and its included software. Your out-of-the-RAW-converter files should qualify for the ``80 / 20 rule,'' and your actually-profiled files should pass muster unless you're doing conservation work.
Cheers,
b& _______________________________________________
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