Re: RPP raw photo processor 64
Re: RPP raw photo processor 64
- Subject: Re: RPP raw photo processor 64
- From: Ben Goren <email@hidden>
- Date: Sun, 02 Jun 2013 08:30:08 -0700
On Jun 1, 2013, at 1:50 PM, Andrew Rodney <email@hidden> wrote:
> The idea that ACR and Thomas Knoll have created anything different from the vast majority of raw processors which are built to mimic the tools and techniques photographers for years have used doesn't wash.
I hope I haven't suggested otherwise, and I don't recall anybody else who has.
Rather, the point I'm trying to make is that digital, unlike film, is very well suited for (reasonable degrees of) colorimetric accuracy...but that Adobe has chosen to create a raw development engine that isn't even theoretically capable of colorimetric accuracy.
> For the rest of us, it's a digression from making (or taking, there is a difference) a photograph.
Actually, it's been my experience that virtually all the complaints I see from photographers are results of colorimetric failures.
Improper white balance and exposure are colorimetric failures. Lack of shadow and highlight detail are inevitable consequences of the S-curve almost universally applied to add ``punch'' and enhance midtone contrast. That same enhanced contrast, in turn, is also responsible for many of the unnatural-looking skin tones. Indeed, pretty much any unnatural skin tone is a result of a colorimetric failure. Those infamous blue / purple hue twists are all colorimetric failures. And on and on and on.
I honestly think pretty much every photographer would benefit from a workflow that is initially colorimetric, and then gives the photographer full control over when and where and how to deviate from a colorimetric rendering. As it is, there's a great deal of ``secret sauce'' built into the overwhelming majority of raw developers, and not only is there no way to turn off said secret sauce, it's not even readily apparent that it's being applied in the first place.
I'll also note that many of the complaints I've heard about colorimetric workflows stem from people who've never actually successfully implemented one. Often, they'll start with an Adobe raw development and then build an ICC profile from a badly-exposed snapshot of a classic 24-patch ColorChecker held by the photographer at arm's length...and then wonder why the results are so ugly.
Cheers,
b&
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