Known Participant

Answered

Lens profile correction problem

Forum|Forum|6 years ago
February 26, 2019
3 replies
2045 views

I'm noticing that in LR Classic the automatic lens profile correction has recently started introducing distortion at the sides of my images.

I'm using a Canon EF 17-40mm f/4 L USM on a Canon 5D III for architectural photography. When I apply the lens profile correction, the barrel distortion becomes more pronounced. I'm using the latest update to LR Classic CC (8.2) on Windows 10. The profile is "Adobe (Canon EF 17-40mm f/4 L USM)."

This issue is a recent development.

Has anyone observed the same problem? Was there a recent change made to the lens profile?

Thanks for any information or suggestions.

Rod

This topic has been closed for replies.

Correct answer Todd Shaner

https://forums.adobe.com/people/Rod+Pickett+Photography wrote
When I move the "Distortion" slider on the profile tab all the way to the left (0) the barrel distortion appears to go away. I'm not exactly sure how this slider interacts with the profile.

It sounds like double-correction. Are you adjusting raw or JPEG files? The Canon 6d has an in-camera Distortion Correction setting that corrects the JPEG output file. If you're applying Lens Profile Distortion Correction to camera JPEGs that's causing the issue. The same applies for the in-camera Peripheral Illumination setting (i.e. Vignetting correction). I suggest unselecting both of these options in the 6D camera menu settings and use the LR Lens Profile. This gives you the option to adjust them, which may be beneficial. 100% Distortion and/or Vignetting correction can cause degradation of the image.....there's no free lunch here!

If adjusting raw files you have some other issue. Please Export one of the CR2 files wit the issue to DNG file format and post to a file sharing site such as Dropbox. The Canon EF 17-40mm lens profile looks good on my system!

GoldingD

Legend

By the way, with my inquiry, I should have asked what happens if in the Develop module you select reset, And, the select preset zeroed? This should strip anything happening via presets at import, custom Develop presets, and user input.

Work with the Develop module in Lightroom Classic CC

R

Rod Pickett PhotographyAuthor

Known Participant

I had been applying a lens correction preset on import. Then I used LR/Enfuse to batch process the images. That produces a TIFF. When I looked at the TIFF, I was surprised that the lens correction had not been applied, so I checked the two boxes. I think Todd is correct. I was applying it twice.

Also the preset has a plus sign next to it. I don't know what that means.

GoldingD

Legend

Did you perhaps set custom default develop setting? Are your default develop settings altered for a specific camera? Having to drastically move the distortion slider seems to scream that.

Setting Custom Develop Defaults in Lightroom Classic « Julieanne Kost's Blog

https://petapixel.com/2017/05/10/tip-set-custom-develop-defaults-lightroom-hidden-feature/

https://lightroomkillertips.com/customize-default-develop-settings/

Adobe Lightroom - Customising Camera Defaults

R

Rod Pickett PhotographyAuthor

Known Participant

Here's some additional information.

When I move the "Distortion" slider on the profile tab all the way to the left (0) the barrel distortion appears to go away. I'm not exactly sure how this slider interacts with the profile.

Todd ShanerCorrect answer

Legend

https://forums.adobe.com/people/Rod+Pickett+Photography wrote
When I move the "Distortion" slider on the profile tab all the way to the left (0) the barrel distortion appears to go away. I'm not exactly sure how this slider interacts with the profile.

It sounds like double-correction. Are you adjusting raw or JPEG files? The Canon 6d has an in-camera Distortion Correction setting that corrects the JPEG output file. If you're applying Lens Profile Distortion Correction to camera JPEGs that's causing the issue. The same applies for the in-camera Peripheral Illumination setting (i.e. Vignetting correction). I suggest unselecting both of these options in the 6D camera menu settings and use the LR Lens Profile. This gives you the option to adjust them, which may be beneficial. 100% Distortion and/or Vignetting correction can cause degradation of the image.....there's no free lunch here!

If adjusting raw files you have some other issue. Please Export one of the CR2 files wit the issue to DNG file format and post to a file sharing site such as Dropbox. The Canon EF 17-40mm lens profile looks good on my system!

R

Rod Pickett PhotographyAuthor

Known Participant

I think you're right. I had been applying a lens correction preset on import. Then I used LR/Enfuse to batch process the images. That produces a TIFF. When I looked at the TIFF, I was surprised that the lens correction had not been applied, so I checked the two boxes.

Apparently, I had applied lens correction twice.

What does it mean when there is a plus sign at the end of a develop preset?

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded