Weird Color Artifacts

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  • Updated 6 years ago
Merged

This conversation has been merged. Please reference the main conversation: Lightroom 4.1 RC2: Artefacts when using shadows, clarity and image warp (lens corrections)

This issue is going to be hard to explain but I will give it a shot. I recently upgraded to Lightroom 4.3. After making adjustments to a photograph in Lightroom, I press CMD+E to open the photo in Photoshop. But when the photo opens, it has weird artifacts along the edges of the subjects within the photo. So, alternatively, I export the photo to my desktop and then open it with Photoshop. When it opens, the artifacts aren't there. The artifacts are only there when I use the 'Photo>Edit In' command within Lightroom. When viewing the photos in Lightroom, the artifacts are not present. I am using Lightroom 4.3, Camera Raw 7.3, and Photoshop CS5.1. The artifacts can be seen on the sleeve in the uploaded photo..
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Betty Hicks

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Posted 6 years ago

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Dorin Nicolaescu-Musteață, Champion

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You cannot run ACR 7.3 in Photoshop CS5. There must be an older version (my guess it's 6.7).

I remember a similar bug in LR/ACR, caused by a combination of lens distortion correction and Clarity/Highlights/Shadows. Do you have lens corrections applied? Does the bug still show itself with lens corrections off?
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Betty Hicks

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When I look at the 'About' information for Lightroom, it states Lightroom 4.3 and Camera Raw 7.3. I do not apply any lens correction within Lightroom.
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Dorin Nicolaescu-Musteață, Champion

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No, it's not where you should look. Look in Photoshop -> About Plugins -> Camera Raw.

No lens corrections? What camera is that?
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Betty Hicks

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Ok. It's ACR 6.7. I am using a 5d mark III. I didn't notice weird artifacts until I upgraded to LR 4.3 as I said before if I export the image to my hard drive and then open it from within Photoshop the artifacts aren't in the image. They only appear if I use the Photo>Edit In command in LR.
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Steve Sprengel, Champion

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If your Photoshop is an older series than LR, which CS5 is compared to LR4, then you should be using Edit in Photoshop (with LR Adjustments) not with (Open Anyway). If you don't see this question when you use Edit In, then Reset your Warning Dialogs using a button in LR preferences.

This was an early bug in Process 2012 rendering for LR4 and ACR7 but because LR4 was released before CS6, Adobe needed at way to do Edit In Photoshop with CS5 and PV2012 rendering was added to ACR 6.7. Unfortunately the bug was never fixed because CS6 arrived and that became the official way to use Edit in Photoshop from LR4.

The actual issue seemed to be that the light-dark boundaries for applying the highlights and shadows and whites and blacks adjustments for the new PV2012 toning are erroneously computed before the pixels are distorted by profile-based lens-corrections, but the toning is applied to the image after lens-corrections are done so some dark areas get lightened and light areas darkened when they shouldn't be, so there is a mismatch between the mask and the adjustments. Turning off lens-corrections also mostly fixes the bug, but there are other things in LR4 by now that aren't supported by the early version of PV2012 rendering in ACR 6.7, so you really shouldn't be doing the Edit-Anyway option, anymore.

Besides using Edit In Photoshop (with LR Adjustments) to avoid the problem, you can upgrade to CS6, which is wise, anyway, because after the end of the year in 2 weeks, Adobe won't allow skipping a version while upgrading -- in your case CS5 to CS7 or higher. So if something forces you to get CS7+, like CS5 is supported on a newer computer you might get, then you'll have to pay full price for that newer Photoshop, not the reduced upgrade rate.