Is this Moiré?

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5 comments

  • Jerry C
    Strange, this is a view of the image at 100% magnification. Otherwise, it would likely be an artifact of fitting it to the resolution of your monitor.You seem to have a good bit of color noise in the image, as well, and I am not sure how this might affect moire. I would expect to see some reduction of moire, however. Can you post the before and after adjusting moire rather than C1 verse Lightroom (on the web link)?

    Jerry C
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  • NN635920435860834194UL
    Thank you for your input, Jerry.
    These screenshots were taken at 200%. It is also visible at 100% and on three different monitors.

    I was able to track it down: there was no lens profile assigned to the shot. However, the Canon TS-E 24mm does not have a lens profile in C1 (nor does it have one in Lightroom). As far as I know this is due to the fact, that - in regards to the shifting - it is impossible for the profile to know, where the center of the lens is/was when the shot was taken.

    So the default "Generic" lens profile was assigned to this shot, which does exactly nothing in regards to my problem. I tried a few canon lenses profiles and the one for Canon EF 24-70mm f/2.8L USM + selecting "Chromatic Aberration" does remove these artifacts. I also tried the "Analyze" function on the Generic profile without luck.

    I have never had problems with this camera + lens combination before using LR and/or CameraRAW Standalone (I am in the process of making the switch to C1). These programs also do NOT have a profile for this lens. So I would like to know the following:

    Is there another way to get this to work except from assigning a wrong lens in the profile selection?
    Also I would like to know what this is called - is this Moiré?

    Kind regards,
    Andi

    [color=#FF0000:4u6fwtxv]EDIT
    Following exact these steps I was able to get rid of these artifacts:


      1. assign a wrong lens profile which does remove these artifacts (had to try a few profiles and went with one that included my focal length of 24mm). Selecting a lens profile automatically activates the "Chromatic Aberration" correction.
      2. switch the lens profile back to "Generic" which automatically removes the CA correction
      3.[/color:4u6fwtxv] tick the CA correction back on (without changing the lens profile)



    Note: Just ticking the CA correction in the beginning (when "Generic" is selected) without this funny lens profile switching progress does not affect anything.
    This makes no sense to me - so I guess it is a software bug?

    PS: as requested by Jerry I made a comparison before and after adjusting Moiré @ 100% magnification. No lens profile assigned (which means, that "Generic" is selected). Link: https://i.ibb.co/12gLx8T/with-without-moire.jpg

    https://i.ibb.co/12gLx8T/with-without-moire.jpg
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  • SFA
    If you have Hardware acceleration active (which would be the default state), have you tried turning it Off ("None" on the Preferences file option) tosee what happens?
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  • Jerry C
    It looks like you need the correct lens profile to correct moiré optimally, which I did not think of. Best to file a case with tech support to definitively find out how to optimize when you don't have a lens with a profile.

    Capture One's support for software only (for those without a Phase One camera) has changed. To request support and ask other questions, you now click on "Submit a request" in the upper right hand corner. It is easy to miss.

    Jerry C
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  • NN635920435860834194UL
    @SFA: turning off Hardware acceleration does not affect my problem, I have tried this.

    @Jerry C: I will first update to C1 20 and then see what happens. If this problem remains I will definitely get in touch with Capture One's support team. The tricky part is: assigning a profile from another lens does not only ensure that I get rid of the Moiré but also applies the distortion correction from that lense which results in a distorted "not distorted" image.

    Thank you for taking the time to reply!
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