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Thread: Query re: jpeg export and visible banding

  1. #1
    Join Date
    May 2013
    Location
    South Yorkshire, UK
    Posts
    202

    Query re: jpeg export and visible banding

    Hi. I'm trying to export a jpeg image from AR but keep noticing banding that's occuring in some areas - a sky area in my case. I've got the jpeg quality set to 100% in the advanced preferences but still have this happen (please see attachment). Is it to be expected due whatever compression is still taking place?

    I can work around it - tiff files output better but wanted to mention it in case there's a problem with the jpeg export.

    Click image for larger version. 

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    EDIT:
    I've also managed to work around it by duplicating my sky background and applying 8% monochromatic noise. It's still a little apparent but not so obvious.

    Click image for larger version. 

Name:	sky crop 8pc noise.jpg 
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    Last edited by Bertrude; 06-12-2018 at 02:07 AM. Reason: To clarify banding as an issue in the title

  2. #2
    Join Date
    Mar 2006
    Location
    Ambient Design
    Posts
    3,610
    Hi Bertrude,

    It's likely that the banding is due to jpeg compression, but it'd still be worthwhile looking into this. Could you email me at support@artrage.com and attach the source painting file if it's small? Alternatively if it's a larger file, if you can email me, we can sort out a way of getting the file and taking a look at it.
    Dave
    Resident Bug-Hunter / Technical Support
    Ambient Design

  3. #3
    Join Date
    May 2013
    Location
    South Yorkshire, UK
    Posts
    202
    Thanks for the help Dave. My original ptg file is over 560MB so I'll strip it down and send you a dropbox link to it via email when it eventually uploads.

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