In this post, I'll look at the renderings of the various Adobe DNG profiles on a profile by profile basis.

If you haven't taken a look at Part 1 of this, I'd strongly suggest you do - it's there that I set the scene for these charts, and talk about how to interpret them. Part two is here.

As a reminder, what we're looking at here is the color rendition embedded in the various default Adobe camera profiles for the Canon 5DII. We're looking at that for colors that approximate to the key color patches on a Gretag Macbeth 24 patch color chart. Also, remember that the various "camera" profiles are intended to mimic the camera settings, not necessarily to be what Adobe might consider to be pleasing color renditions.
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In this post, I'll look at the renderings of the various Adobe DNG profiles on a color by color basis.

If you haven't taken a look at Part 1 of this, I'd strongly suggest you do - it's there that I set the scene for these charts, and talk about how to interpret them.

As a reminder, what we're looking at here is the color rendition embedded in the various default Adobe camera profiles for the Canon 5DII.

A complete digression, but for anyone struggling with the fact that the Apple CIAnnotation sample doesn't work under Leopard (OS X 10.5), the biggest problem seems to be in the CITextLayer.m module, where the graphics context is not restored. Note there are other issues, but at least after this mod it no longer just crashed in autorelease.......
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In previous posts, I've talked about DNG Camera Profiles, and the "hue twists" that Adobe put them in order to get "pleasing" color. "Pleasing" in this context has, as far as I can gather from Adobe's various comments on the subjects, at least two aspects to it. The first aspect is "color like the JPEGs from my camera" request that comes up on forums regularly. On the more technically sophisticated forums, this comes up as "the same color as NX2" for Nikon and "the same color as DPP" for Canon.

dcpTool V1.1 is out - a little sooner than I'd been expecting to update it.

Get it here: http://dcptool.sourceforge.net/

What I've done, in response to requests from folks on the Adobe forum, is to add the capability to modify DNG Camera Profiles to either change, or entirely remove the "hue twists" that I described in a previous post.
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There's been a conversation on the Adobe forums about some unexpected changes in tint when the recover and exposure controls are used in Adobe Camera Raw (ACR), and presumably in Lightroom as well. With input from Eric Chan of Adobe, what started out as a discussion of a possible bug in the ACR quickly moved towards the understanding that the unexpected shift in tint was by design, and part of Adobe's new generation of color profiles.
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As mentioned in a previous post, getting dcpTool out the door was a little bit of a problem.

dcpTool is hosted on SourceForge. Previously I've uploaded project web content without any problem, for CornerFix and tnefDD, using SFTP via Cyberduck, which is a neat OS X FTP client. However, since then, SourceForge have done a system migration. And while I could easily use CyberDuck to upload to the SourceForge file management system, no way could I access the web site area.

dcpTool did indeed ship out yesterday:

dcpTool is a compiler/decompiler for DNG camera profiles (DCP files), as used by Photoshop, Camera Raw and Lightroom. dcpTool can decompile binary format DCP files into an XML format for editing, and then compile the XML format file (editable with a text editor) back into a binary DCP file, as well as extract embedded profiles from image files. It runs on Windows and OS X command lines.

The new version of CornerFix (V1.0.0.0) is out. This has:

1. Lens definitions for new Leica lenses

2. Fixes some minor memory leaks in the Mac version

3. Updates the Windows version to VC 2008 - that brings with it some advantages as regards how Vista does its UAC. Technically, CornerFix is no longer in a virtualised sandbox, but is a fully fledged Vista application. But its unlikely that any users will notice the difference.
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Author of AccuRaw, PhotoRaw, CornerFix, pcdMagic, pcdtojpeg, dcpTool, WinDat Opener and occasional photographer....
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