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Bob Jarman
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Re: C&C request


I'm pretty sure it's an optical illusion but #'s 2 & 3 give me the impression of a slight degree of distortion while #1, my fav of the the set, less so. For me, n-tone images are a rarity and my color perception is faulty anyway, so I cannot judge other than to say getting an n-tone images is a walk in the weeds workflow, at least for me. So, to me it is useful to have lens profiles to apply rather than rely on ACR's default - particularly for adapted glass.

I've been playing at length with ChatGPT constructing basic settings in DxO for specific camera sensors — M10r, M246, Z8, Z6iii, and most recently D200. The underlying tone curve is specific to each sensor as are global adjustments. From the baseline, the workflow can fork to a specific FilmPack B&W film ( ACROS Neopan 100, Delta3200, FP4 125, or HP5 400 in my case) or SilverEfexPro9 adjustments.

I'm sure you can do the same with ACR and PS; I did need to 'train' CGPT for the DxO PL10 tone curve parameters - it wanted to use older metrics.

Perhaps an exercise in futility but I have learned about sensor specifics and preferred slider use along the way. I also use CGPT to compare lenses - saves lots of digging through reviews etc.

Hope this may be of help.

Bob



Oct 06, 2026 at 10:00 AM





  Previous versions of Bob Jarman's message #17119049 « C&C request »