1. In a previous post, I has mentioned the existence of a "new product". Well, AccuRaw is now in a closed beta. AccuRaw isn't of course aimed at the X-Pro specifically. AccuRaw is, as its name suggests, intended to deliver technically accurate raw conversion rather than the "Hollywood colors" conversions that most current raw developers deliver by default. But one part of what AccuRaw does to to give very fined grained control over the internal operation of the demosaic process. Specifically, it has sliders that control artifact suppression in luminance and chrominance, and post-demosaic chroma filtration. So you can tune the demosaic to suit your camera, the nature of the subject, etc, rather than have the one-size-fits-all of the mainstream raw developers.

    Of course, this makes AccuRaw potentially useful to owners of camera with X-Trans sensors. So here's a quick comparison showing AccuRaw vs the other guys:

    ACR and SILKYPIX versus AccuRaw

    Just for reference, here are the various contenders from previous posts:


    Adobe Camera Raw V7.1 beta

    ACR beta 7.1  - Lots of chroma smearing, and the letters are quite desaturated.


    SILKYPIX conversion

    SILKYPIX - best of the breed so far, some chroma smearing, saturation down, resolution appears slightly reduced


    AccuRaw Beta 5: Maximum resolution settings, 400% crop


    AccuRaw Beta 5: 60% luma and chroma artifact suppression, 
    20% post demosaic filtering, 400% crop


    In the first crop, set for maximum resolution, AccuRaw gives very good results on the red letters, but has some artifacts. However, with AccuRaw, you can tune the result to what you want. The second crop shows moderate artifact suppression settings - still nowhere near as much chroma smearing as the other raw developers, but much reduced artifacts.


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  2. PhotoRaw was one of the apps mentioned in an article in the New York Time's Personal Tech column entitled "The iPad as a Hand-Held Darkroom". Sadly, they didn't provide a direct link to PhotoRaw, but hey, it's still good.
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  3. dcpTool V1.4 is out, with support for the DNG 1.4 specification, and Adobe's "V4" profiles.

    When Adobe's V4 DNG Camera Profiles (DCP files) came out, I blogged about the new fields in this post. Well, the good news is that Adobe did eventually document the new fields, and now dcpTool is updated to support them.

    For reference, the three new fields are:
    1. Exif 0xc7a4 : ProfileLookTableEncoding, which defines whether the LookTables are in linear or sRGB encoding, 
    2. Exif 0xc7a5 : BaselineExposureOffset, which allows the profile to specify an exposure offset, and
    3. Exif 0xc7a6 : DefaultBlackRender, which is a "hint" to the raw converter as to whether or not to perform black level subtraction. (Black level subtraction can interfere with LookTable operation. Not that I think that a "hint" has any place in a specification, but the Adobe folks don't agree with me on that.)
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Author of AccuRaw, PhotoRaw, CornerFix, pcdMagic, pcdtojpeg, dcpTool, WinDat Opener and occasional photographer....
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