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Thread: New custom DNG profile for Pentax 645z

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    New custom DNG profile for Pentax 645z

    Here's new versions of my custom 645z profiles:

    http://torger.dyndns.org/dcamprof-v0...utral-plus.dcp
    http://torger.dyndns.org/dcamprof-v0...5z-neutral.dcp

    It's not that I'm into making profiles that much, it's doing the software itself (DCamProf) that is my thing, but I've had quite much interest in the 645z profiles as the Adobe bundled profile is not that good.

    The new versions fixes some clipping (extreme colors) and gradient issues (sunsets) with the old. The "Neutral+" is looks almost identical to "Neutral" but have some subtle adjustments:

    - longer rolloff to white in skin-tone range to improve look of high-key portraits
    - shorter rolloff to white in cyan-blue-magenta to improve color of skies
    - slight warmup of midtones and highs in greens and yellows for making sunlit
    areas stand out more in landscapes
    - slight saturation increase, skin-tones excluded as well as already highly saturated
    colors
    - slight reduction of green component in oranges to get better separation between
    greens and reds (for landscapes)

    If you've used the previous version they look about the same with one major difference: blues are rendered lighter. This is both for a subjective reason (lighter blues improves tonality as it moves blues into a zone where the eye is more sensitive) and a technical one - many Sony sensors have such a sensitive blue that it becomes very hard to render blues realistically dark without aggressive LUT bends towards the gamut edges. By rendering the blues a bit lighter than realistic this problem is avoided.

    The profile is still rendered from a single CC24 shot from Imaging Resource (I'm a Hassy user myself, I don't have a 645z). It works well for D50 light.
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    Re: New custom DNG profile for Pentax 645z

    Thanks so much. The Adobe profile is not good at all. Excuse my ignorance, but how can I load this into Lightroom? Do I need the same software you used?

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    Re: New custom DNG profile for Pentax 645z

    Quote Originally Posted by Thomas Fallon View Post
    Thanks so much. The Adobe profile is not good at all. Excuse my ignorance, but how can I load this into Lightroom? Do I need the same software you used?
    No, you just need to place it in the directory where Adobe Camera Raw expects to find user-provided DCPs.

    Windows:
    C:\Users\Your_username\AppData \Roaming\Adobe\CameraRaw\CameraProfiles

    OS X:
    /Users/Username/Library/Application Support/Adobe/CameraRaw/CameraProfiles/
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    Re: New custom DNG profile for Pentax 645z

    Quote Originally Posted by torger View Post
    No, you just need to place it in the directory where Adobe Camera Raw expects to find user-provided DCPs.

    Windows:
    C:\Users\Your_username\AppData \Roaming\Adobe\CameraRaw\CameraProfiles

    OS X:
    /Users/Username/Library/Application Support/Adobe/CameraRaw/CameraProfiles/


    After some difficulty finding the appropriate Mac folder, I just inserted my username into the line and dropped it into a Spotlight search. The folder opened right up and I dropped the profiles in. A big improvement over standard or embedded profiles that are the default.
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    Re: New custom DNG profile for Pentax 645z

    Those that have downloaded the Neutral+ can do it again and replace the old file. A user discovered an issue that it didn't work well with Adobe's noise reduction algorithms, and that has now been fixed.

    http://torger.dyndns.org/dcamprof-v0...utral-plus.dcp

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    Re: New custom DNG profile for Pentax 645z

    Quote Originally Posted by Thomas Fallon View Post
    After some difficulty finding the appropriate Mac folder, I just inserted my username into the line and dropped it into a Spotlight search. The folder opened right up and I dropped the profiles in. A big improvement over standard or embedded profiles that are the default.
    Let me guess - you didn't find the Library folder? For future reference: when in finder, click Go on the menu bar and hold option to make it appear. Or, when in your username folder, right-click, "show view options" and at the bottom you'll find the "show Library" box, check it to have it on all the time.
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    Re: New custom DNG profile for Pentax 645z

    Anders,

    Do you have any interest in accumulating a library of profiles? I'd understand if you didn't want the hassle. You could take user submissions, but then curating might be difficult unless the profile and all input files were provided. Even then it would be a pain.

    But if you decide to do it, I bet you'd get a LOT of interest. (I'd submit the A7II profiles you helped me build )

    Great work!

    Matt

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    Re: New custom DNG profile for Pentax 645z

    Yes at some point I'll probably do that. It's a bit early in the process though, the profile maker software is in development, I (and users) still find bugs and fine-tunings that needs doing. The posted 645z profiles here are not the final revisions for sure :-)

    Before going broader with a library I'd like to have a bit more stable software.

    Quote Originally Posted by MGrayson View Post
    Anders,

    Do you have any interest in accumulating a library of profiles? I'd understand if you didn't want the hassle. You could take user submissions, but then curating might be difficult unless the profile and all input files were provided. Even then it would be a pain.

    But if you decide to do it, I bet you'd get a LOT of interest. (I'd submit the A7II profiles you helped me build )

    Great work!

    Matt
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    Re: New custom DNG profile for Pentax 645z

    Here's updated profiles. They've been updated due to generic fixes in the DCamProf tone reproduction. The base profile remains the same, and it's probably best to keep it that way while updates are related to tone reproduction operator rather than anything Pentax 645z specific.

    (The tone reproduction operator is the thing that applies contrast to the flat colorimetric "reproduction style" profile, and modulates colors so they appear accurate despite the changed contrast)

    Anyway what's fixed here is a shadow over-saturation issue, most evident in deep blues. Blue has got some additional special treatment. Why blue is so special and has needed so much special care is because it's weak in luminance and CIECAM02 is weak in high saturation blues. I'm now back again to no known issues in the tone reproduction, but I can't guarantee it will stay that way . Consider also these profiles as "beta".

    http://torger.dyndns.org/dcamprof-v0...5z-neutral.dcp
    http://torger.dyndns.org/dcamprof-v0...utral-plus.dcp

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    Re: New custom DNG profile for Pentax 645z

    Seems like the links aren't working. Can you double check Torger, I'd like to try these out? Thanks!

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    Re: New custom DNG profile for Pentax 645z

    Quote Originally Posted by rhern213 View Post
    Seems like the links aren't working. Can you double check Torger, I'd like to try these out? Thanks!
    I'm moving so the server/workstation is down for some days, I don't know yet for how long :-/

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    Re: New custom DNG profile for Pentax 645z

    HELP

    I bought a new laptop with Windows 10 on it. I can't find the right way to install Torger's great Camera Profile for the Pentax 645Z. It was no problem on my other Window computers.

    I put the Camera Profile in here: C:\ProgramData\Adobe\CameraRaw\CameraProfiles\Adob e Standard

    It does not show up in ACR!?

    Do I overlook something or does Windows 10 need something extra? Can't figure it out.

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    Re: New custom DNG profile for Pentax 645z

    Quote Originally Posted by Michiel Schierbeek View Post
    HELP

    I bought a new laptop with Windows 10 on it. I can't find the right way to install Torger's great Camera Profile for the Pentax 645Z. It was no problem on my other Window computers.

    I put the Camera Profile in here: C:\ProgramData\Adobe\CameraRaw\CameraProfiles\Adob e Standard

    It does not show up in ACR!?

    Do I overlook something or does Windows 10 need something extra? Can't figure it out.
    Michiel:

    Try: C:>Users>your name>
    AppData>Roaming>Adobe>CameraRaw>CameraProfiles

    Tom

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    Re: New custom DNG profile for Pentax 645z

    Quote Originally Posted by tsjanik View Post
    Michiel:

    Try: C:>Users>your name>
    AppData>Roaming>Adobe>CameraRaw>CameraProfiles

    Tom
    Thanks Tom,

    I have been there many times but there I find a Index text file with camera names. I have the feeling Windows 10 needs a Installer program to get everything in the right places.

    All the DCP files are here; where I put it: C:\ProgramData\Adobe\CameraRaw\CameraProfiles\Adob e Standard

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