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  • Paul Steunebrink
    As a rule of thumb, in Capture One you need the original RAW file and not the converted DNG file for lens correction data.

    Lens correction data can be provided by Capture One from the built-in lens correction database, which is extended with each update. Or it can be retrieved from the (original) raw file.

    If neither is the case, you last resort is to do a many lens correction with the sliders in the tool.
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  • GARoss
    Deleted
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  • GrahamB3
    My thought on lens correction in general; use it only when necessary.

    Removing chromatic abnormalities is good, but most images don't need geometric correction. Applying software geometric correction on one's image does so by "warping", and may introduce softness or other faults. If one needs correction, e.g., for architecture, by all means use correction. Few of my landscape images benefit from lens correction.

    I use PT Lens, which has been around for years. They make a ($25 US) PS compatible plugin for lens correction. PT Lens claims their correction is superior to Adobe. I've recently stopped my PS/LR subscription and now only use C1 Pro and PS CS5. A good aspect of PT Lens: they will provide you with a profile for any lens you request, after you provide an image of a suggested (geometric) scene.

    Graham
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  • GARoss
    Deleted
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  • Paul Steunebrink
    [quote="NNN636253522698317746" wrote:
    ...
    I use the Minolta a lot & having to lens correct hundreds of files is a real time killer. Perhaps I can develop custom pre-set for it.

    That seems to me the best option.
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  • GARoss
    Deleted
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  • GrahamB3
    [quote="NNN636253522698317746" wrote:
    Hi Graham. I see you have CS5. Have you ever tried the free Adobe DNG converter? With CS6, my Sony a99 II RAW files aren't supported as well as several lens. When the ARWs are converted to DNG everything works in CS6 except a vintage Minolta lens. I'm just curious why the lens correction data within the DNG file are not present in C1 Pro.

    Good point on when to use correction. It's not always necessary. I'll give PT Lens a try. Thanks!

    George


    I converted full size raw files from my Sony a850 to DNG (I still own the camera, but rarely use it). The a850 records in either full raw, or compressed raw. I found recording in full raw, and saving to disk in DNG created a smaller file size than the compressed raw the camera offered. File size was more of an issue in 2009 when I first purchased the a850, not so much today.

    Unless one wants to use an older raw converter, such as the PS CS6 adobe raw converter you own with a modern camera, I think converting to DNG isn't necessary. If you own C1 pro, use it. I believe C1 pro does a better job than Adobe in raw conversion. If you need to further process the file in PS, select "edit with" or "open with" from the file menu in C1. Perform the edit in PS, and the file will automatically be imported back into C1.

    Graham
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  • Paul Steunebrink
    [quote="GARoss" wrote:
    [quote="Paul_Steunebrink" wrote:
    [quote="NNN636253522698317746" wrote:
    ...
    I use the Minolta a lot & having to lens correct hundreds of files is a real time killer. Perhaps I can develop custom pre-set for it.

    That seems to me the best option.

    Thanks Paul,
    Would you recommend to use a photo taken with the lens of a graph with vertical & horizontal lines (or structure)? Something like that? Or is there a tutorial how to do this? Thanks.
    George

    Both. Using a graph with lines helps to start, but I sure would check with your regular photographic subject as well.
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  • DERG
    For my 3 non-supported lenses I made a graphic chart, tweaked the adjustments in C1 Pro based on photos taken of the chart & saved as a preset. I noticed with today's 10.1 release that one of the Tamron's lenses is now listed. Sadly, my preset for that lens is no where near where C1 has it. I have much to learn... ☹️ 😉
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  • GARoss
    Deleted
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  • SFA
    [quote="GARoss" wrote:
    [quote="Paul_Steunebrink" wrote:

    George - I use the Minolta a lot & having to lens correct hundreds of files is a real time killer. Perhaps I can develop custom pre-set for it.
    Paul - That seems to me the best option.
    George - Thanks Paul,
    Would you recommend to use a photo taken with the lens of a graph with vertical & horizontal lines (or structure)? Something like that? Or is there a tutorial how to do this? Thanks.
    George
    Paul - Both. Using a graph with lines helps to start, but I sure would check with your regular photographic subject as well.

    Hi Paul,
    As I've worked with lens correction more I now understand how to use Lens Correction better. Under Lens Correction/Lens/Profile it defaults to Generic. This must be changed to Generic pincushion distortion & then the Distortion slider can make the necessary adjustment.

    I printed a graph on letter size paper & took some photos using my Minolta 80-200mm f/2.8 lens. I'd like to upload my photos to this forum but see I need permission to do so. Can you grant this or do I need to contact some else? My only intention is for others with more experience to advise me if my adjustments are correct of if other adjustments are needed.

    Thanks
    George


    George,

    The Forum does not cater for files being uploaded. (A wise decision in my opinion.)

    You can however place the file somewhere that allows it to be shared - Dropbox or some other service of a similar nature - allow it to be shared (usually a setting, sometimes and assumption) and post a link to it here in a post of the forum.

    From the link those who are interested and in a position to help (both time wise and knowledge wise) will be able to see what you are providing and help accordingly.

    I hope this helps you.


    Grant
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  • GARoss
    Solved
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