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14 comments

Date Votes
  • Walter Rowe
    Moderator
    Top Commenter

    This is the normal behavior. I suspect this is because distortion correction should straighten a line vs make it more curved?

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  • Dariusz Krzan

    Not normal, haven't seen this happen before and i used capture one for over 2 years now, must have been one of the last updates

     

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  • Walter Rowe
    Moderator
    Top Commenter

    I've used Capture One since 2014 and to my recollection this has always been the behavior.

    0
  • Dariusz Krzan

    Really? oh my god, that's horrible, i can't get a straight linear gradient once the distortion has been corrected?

     

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  • Dariusz Krzan

    Sorry, has this never been brought up with the capture one team? Once the distortion had been corrected and horizon is straight, draw a straight linear gradient not a curved one? Sorry, this behaviour confuses me

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  • Dariusz Krzan

    Here is another example where the image had been straightened, distortion correction applied, but the linear gradient is curved. Lens used was tamron 50-400. It's worse with lenses with higher distortion 

    https://drive.google.com/file/d/1AHkljLO6GXNBlBNrcDyiU_rDN1WBZbpd/view?usp=sharing

     

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  • Walter Rowe
    Moderator
    Top Commenter

    Yes, this is a known issue I believe (meaning other people have pointed it out). Go over to their ideas site (https://captureone.ideas.aha.io) and upvote / comment on one of them maybe? I agree it is annoying.

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  • Thomas Kyhn
    Top Commenter

    This has been brought up before.

    See this: Gradient masks after keystone adjustments.

    And this: Linear gradient after lens distortion correction.

    Here's a request for a fix: https://captureone.ideas.aha.io/ideas/FR-I-606

    As I remember, I contacted support about it, and they replied that it was unlikely to be fixed.

     

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  • Dariusz Krzan

    Thank you both! Will definitely upvote as it is quite annoying.

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  • Ian Wilson
    Moderator
    Top Commenter

    You should be able to get the linear gradient straight, despite the lens correction, as long as you drag in the middle of the image, not to one side or the other, in my experience.

    Ian

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  • Thomas Kyhn
    • Edited
    Top Commenter

    If the linear gradient changes form when you apply lens correction or keystone correction, there's no way to straighten it out except by removing lens correction or keystone correction.

    Here's an example (with exaggerated adjustments in order to show the effect on the linear gradient).

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  • Ian Wilson
    Moderator
    Top Commenter

    Thomas Kyhn - did you see Paul Reiffer's Live session with extensive discussion of the interaction of keystone correction and gradient masks?

    https://www.youtube.com/live/6QzPWFUdCOQ?si=6YIIZOOPfy01Mkpx 

    Ian

    1
  • Thomas Kyhn
    Top Commenter

    Ian Wilson – I didn't, but I'll have a look at it right away. Thanks for the reference!

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  • Thomas Kyhn
    Top Commenter

    If anyone else is interested, the part about gradient masks comes after about 23 minutes.

    I must say that to me his explanation sounds a bit like a rationalization of a not very well thought out behaviour.

    For instance, holding down the shift key to place a gradient mask vertically or horizontally doesn't always work after making corrections.

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