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WookieTheSloth
Known Participant
May 23, 2022
Question

Auto lens profile but custom vignette

  • May 23, 2022
  • 2 replies
  • 642 views

Hello there!
Got a hopefully short question.

During wedding photoshoots I use couple of different lenses, 35, 50, 58, 85, 140. 
When I create a new preset I also include lens correction on auto, but I would love to have lens profile set to AUTO but vignetting of the lens to set to 50 for all my photos. Unfortunately when I click auto lens profile, and then change the vignetting to 50, it will automatically turn to CUSTOM lens correction profile, that means if I did that with 85mm Canon lens and save the preset, next photo taken with 35mm Sigma will have lens profile for Canon 85mm. Is there a work around how to have vignetting set to 50 for all lenses, but the lens profile will always pick the correct lens or do I have to do it manually all the time? 
Thanks a lot for any advice

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2 replies

F. McLion
Community Expert
Community Expert
May 24, 2022

Just out of curiosity: Why would you want to set vignetting to 50 for all lenses and not use the amount that is the correct value for the given lens with the given aperture used, i.e. what the profile applies?

Makes no sense to me....

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Community Expert
May 24, 2022

AFAICT the aim of the vignetting compensation that happens as part of the Lens Corrections, is to eliminate all visible vignetting for an even lighting response across the whole photo. That may be considered undesirable pictorially, though. 'Too even', 'sterile', some such aesthetic judgement. And after all, this whole project is about getting the picture we like, not the picture that's hard to criticise against some technical aim (that we may not even share anyway).

 

In order to see some desired vignetting there are two approaches: the first is to dial back the strength of any vignetting correction that has been applied by the profile. This by definition works on the whole original captured frame, centred on that. So an off-centre crop will not regain an even amount of vignetting across its own frame - it may show more of that on its left side but almost none on its right side, for example. Also different lenses receive different amounts and weighting of vignette correction from their respective profiles, so it would be 50% of a different AMOUNT of vignetting that would be left in.

 

Hence as an alternative, LrC offers a separate "post crop vignette" feature. This works independent of how the crop you see relates to the original capture; it works independent of any given lens profile and so, of how strong or weak a correction for vignetting that may apply. It also works independent of JPG / Raw so regardless whether lens corrections have been fully applied in the camera, or applied via a profile or built-in data during Raw conversion, you can still then consistently apply the same degree of post-crop vignetting EFFECT to any image, and however cropped.

F. McLion
Community Expert
Community Expert
May 24, 2022

This is where I wanted to lead him, the post crop vignette.

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Ian Lyons
Community Expert
Community Expert
May 24, 2022

You can save the adjusted lens profile to be the new default. Click on the 'Setup' drop-down menu in Lens Corrections panel, then choose 'Save New Lens Profile Default' 

WookieTheSloth
Known Participant
May 24, 2022

I just checked it and it's gonna work. Other solution I got is to create same preset twice, with two different lenses profiles, something like:
Wedding XXX 35mm
Wedding XXX 85mm
Wedding XXX 58mm

Thanks for the advice! I appreciate a lot!