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Strange Jpeg Artifacts

Paul Silk
Using CO 4.83 on Windows 7 64 bit results in strange jpeg files (does not happen if a 8bit tiff file is outputed) ,this never happened on Vista.

I would not have thought the operating system would effect jpeg output from just CO4, any ideas?

See image
http://www.pbase.com/paulsilkphotography/image/124935264.jpg
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Kommentare

11 Kommentare

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  • Paul Steunebrink
    In what program do you view your JPEGs?
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  • Paul Silk
    Hi Paul-E, I can veiw them in any program from windows picture veiwer,ACDsee to Photoshop, they appear the same what ever they are viewed in. I did think they were highlight shadow warning in ACdsee at first but this is not the case. Outputting the same raw file from any other raw converter as jpegs does not result in this.
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  • Paul Silk
    After a little experimenting it seems that CO4 output profiles are not working as the should, only using the embeded camera profile or srgb Tiff seems to take care of the problem.

    See how changing the output profile effects the same image in CO4!

    http://www.pbase.com/paulsilkphotography/image/124940480.jpg

    Any ideas!!
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  • Drew Altdo
    It looks to be just your extreme dark values (closes to 255?). As such I think it would simply be a conflict of an ICC profile (and the JPEG compression) when processing the images. Create a support case and we'll take a look. Until then however you can try different ICC profiles to see if one alleviates the issue.
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  • Paul Silk
    [quote="Drew " wrote:
    It looks to be just your extreme dark values (closes to 255?). As such I think it would simply be a conflict of an ICC profile (and the JPEG compression) when processing the images. Create a support case and we'll take a look. Until then however you can try different ICC profiles to see if one alleviates the issue.


    Drew if it is a conflict of a simple standard srgb profile and jpeg compression then I do not hold out much hope and the only way round it is to save as tiff and and then convert to jpeg in another program, a extra step I do not need.

    I'd take issue with the dark tones remark as this should not be a issue, as you can see srgb jpeg is a mess while tiff is fine and srgb jpeg by another raw converter has no problem with darktones. I'll see about a support but I'm not hopefull ☹️

    http://www.pbase.com/paulsilkphotography/image/124942555.jpg
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  • Drew Altdo
    Paul,
    I suggested it "might" be a conflict of that nature, meaning it would be easily addressed. Create a support case and give us specifics.
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  • Paul Silk
    Hi Drew, the answer from support was that CO5 was the only version compatable with Windows 7 and to upgrade or try the trial.

    The problem is that CO5 trial sat on my computer for a month when I was having the activation problems with CO4 so was never tried or used that I rememeber and as run out.

    As the only problem that exists with Co4 and W7 is jpeg output, Im not prepared to take the risk that after shelling out good money for a upgrade it still does not work with my computer.

    So I thank you for your help but sadley it seems that Capture One and I will have to part company until Ver6 which I will be able to trial , presuming i have not permanantly moved on to another brand by then.

    I appriciate the help you tried to give here.

    Regards Paul
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  • Paul Steunebrink
    [quote="Paul Silk" wrote:
    Hi Drew, the answer from support was that CO5 was the only version compatable with Windows 7 and to upgrade or try the trial.

    The problem is that CO5 trial sat on my computer for a month when I was having the activation problems with CO4 so was never tried or used that I rememeber and as run out.

    Create a new user account on your Win7 system, let's name it Trial, and run your CO5 for 30-days. I don't see any point in moving away from the best converter you can have now that you have come so close. Win7 requires CO5 to start with. Take it from there.
    My 2 cts.
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  • Paul Silk
    Done that, just get a the trial has expired message and there is no way I'm upgrading from 4 to 5 untill I'm sure it runs ok on my computer without the jpeg problem. ☹️
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  • Paul Steunebrink
    [quote="Paul Silk" wrote:
    Done that, just get a the trial has expired message and there is no way I'm upgrading from 4 to 5 untill I'm sure it runs ok on my computer without the jpeg problem. ☹️

    Seems the trial technology has improved. 😉
    An update (say from 5.0 to 5.1 or to a future 5.2) might give you a new trial period. Don't know for sure, I just look for a way out of your deadlock.
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  • Jonathan Gilbert
    [quote="Paul_E" wrote:
    [quote="Paul Silk" wrote:
    Done that, just get a the trial has expired message and there is no way I'm upgrading from 4 to 5 untill I'm sure it runs ok on my computer without the jpeg problem. ☹️

    Seems the trial technology has improved. 😉
    An update (say from 5.0 to 5.1 or to a future 5.2) might give you a new trial period. Don't know for sure, I just look for a way out of your deadlock.

    Yep, the trial period was reset for 5.1 because it added alot of new tools and features over 5.0.2. Just bear in mind that this will not happen all releases, only the ones that have had rather significant updates.
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