Re: CM rant
Re: CM rant
- Subject: Re: CM rant
- From: Andrew Rodney <email@hidden>
- Date: Tue, 03 Jun 2008 14:03:43 -0600
- Thread-topic: CM rant
On 6/3/08 1:22 PM, "John W Lund" wrote:
> -- well, on this one I'm not so sure. Despite his rather broad assertions
> (remember the claim that he'd "worked out all the math" in ACR?), I think
> there's a germ of truth in there. Something about ACR's rendering does seem
> to tend to add "pop" to color & take it away from the "look" of film - as
> opposed to say, Raw Developer, for example.
But according to him, it should be the opposite since luminance isn't
affected with tonal changes in ACR/LR, but is in Photoshop (by design).
> Of course, maybe the "master curves" thing is Dan's way of saying he doesn¹t
> agree with Thomas Knoll's idea of how photos should look?
No he doesn't. Nor does he recognize Thomas spent a lot more time working on
code to getting the effect most users expect AND if you want to go the other
route, you simply fade using Luminosity.
But if what Dan says is so true, lets see the math he said he came up with
(for those not there, Dan claims he has the math ACR uses that he figured
out and has in an Excel spreadsheet of which he refuses to share). The exact
quote:
On 6/4/07 9:08 AM, "dmargulisnj" wrote:
> Moving away from JPEGs into the raw files proper, I then examined each
> Camera Raw command to see its functions. With respect to White Balance,
> Brightness, XXX, and curves, I also scripted a routine to batch open multiple
> variants and spreadsheet the results, to reveal the exact mathematics behind
> the command. This was necessary because, as noted in the post you
> responded to, I simply could not believe that a major vendor was using a
> method this crude to open range.
Hum... Interesting. A script that opens images and in excel reveals the
exact mathematics of a Raw processor. He's so clever.
Andrew Rodney
http://www.digitaldog.net/
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