P: Profile for Canon RF 24- 105mm F2.8 L IS USM Z has edge artifacts

[NYNC]

Just aquired newly released Canon RF24-105mm F2.8 IS USM Z lens. A profile for correction for this lens is on the list of lenses added in December 2023.  Applying the Distortion Correction profile in LR Classic and Photoshop Camera Raw produces edge artifact instead of improving distortion. At the edges, the image shows a pattern of stripes perpendicular to the edge and extending about 5% inward. This artifact occurs in LR 13.1 and Photoshop 25.3.1 with Camera Raw 16.1. It disappears if I deselect Profile Corrections. It is not present when I view the image with other software like the Windows photo viewer FastPictureViewer or in Canon's Digital Photo Professional, so it's specific to LR Classic or Camera Raw 16.1 with Distortion Correction turned on and not due to a problem with the CR3 raw files. If I force use of a profile for a different lens, the artifact disappears. That is perhaps a useful verification that the native profile is bad, but using a mismatched profile isn't going to fix distortion. Turning off GPU acceleration has no effect. See attached JPG screenshot. I'll post in Windows forum but suspect the issue is not limited to Windows.

[Rikk Flohr: Photography]

Is it possible for you to share a sample raw file with us that exhibits the issue?

[NYNC]

Thanks for your quick reply. I am happy to do so, however, the website won't accept the file. I first tried to upload a file shot with the Canon EOS R5, but it was rejected because its size exceeded Adobe's website limit of 47 KB. Then, I tried to upload a file shot on the Canon EOS R3, which has a lower resolution sensor and smaller files. The size was OK, but the website rejected that one, saying that there was a mismatch between the file extension (CR3/Raw File) and its contents. It was just a RAW file; I can't account for that error message. Please let me know if there is some other way to get the file to you. 

To complete the post, if I can somehow get the file to you and you open it in Develop Mode, I suggest you add lens corrections, and then view full screen in Library. The artifact will be plainly seen, particularly along the left edge. Having now seen the problem with CR3 files from both the R5 and the R3, it has to be the lens and the lens profile not just a one off corrupt file or a one camera issue.

[dj_paige]

You can put the raw photo on Dropbox or any similar service; and then provide the link in your reply.

[NYNC]

In reply to dj_paige, although I am aware of the use of Dropbox or Google Drive for this purpose, I was hoping for a way to transfer it privately instead of posting a link that anyone can access. I will wait to hear from Rikk about whether he can provide such a method. 

[NYNC]

Rikk, I used Adobe's private messaging to send you a link to two RAW files. Did you receive it? If not, please let me know if there is some other way to get you the files besides posting a link in a public forum. Thanks.

[Rikk Flohr: Photography]

I've grabbed the files and will forward them to the Camera Raw team for review. 

[Rikk Flohr: Photography]

Thank you for the test file. The Camera Raw team has confirmed the bad behavior and we've logged a bug for a fix for this profile in a future release. 

[NYNC]

Glad to hear. Many thanks for getting this into the bug fix queue so promptly.

[Jens34291742idec]

Hello,

I bought the rf 24-105mm F2.8 lens from canon R6 and I'm experiencing some glitch effect (stripes) on the side of the image. (file is attached). It only appears when using the lens correction profile for the 24-105mm 2.8.

I have a canon R6.

It is visible on every focal length. I already went back to the store and tried another lens and even a combination with a canonR6mk2 and the lens from the store. 

Is anyone facing the same problem or does someone have a solution? 

[Antonio 1956]

I hope I don't have to wait a month for the correction of this bug which, in fact, makes the 24-105 F/2.8 lens unusable.

[NYNC]

Lens is eminently usable. You just have to uncheck "Enable Profile Corrections" in the Lens Corrections Panel of Develop in LR or Camera Raw. If you don't apply the correction, no artifact is introduced, and the image is normal. 

[Antonio 1956]

With the very hi distortion of this lens.... 

I would like don't use before Canon DPP, save in DMG and then open in Camera Raw. 

[BRTSQDPHOTO]

I aqm having the same issue with my RF 24-105 2.8. Mine only happens if the image was shot in Portrait format. I am hoping this is a Lightroom/Photoshop issue rather than a lens problem. Any additional information would be greatly appreciated. 

[Alex34722284jpln]

I am also running into this issue. Does anyone use Capture One with this lens? I need to use this lens for some work and would hate to wait for Adobe to figure things out... we all know how long that could take.

[James34742271u8jk]

I have the same camera, same lens, same problem.

[FrankFischbach]

Same problem with R5 and RF24-105 2.8 - I just realized now that it is related to the profile.

[jsherringham]

Any update on when this lens profile will be fixed? 

[A23197333tzcr]

I wanted to report a bug in Camera Raw/Lr "Lens Profile Corrections" in which when using the new Canon RF 24-105 2.8 Z lens and having this lens correction enabled, there ends up being a distortion/artifact/banding around images once you get them into Camera Raw or Lr. I am using the Canon EOS R3 with the brand new Canon RF 24-105 2.8 Z lens (which came out a couple weeks ago) and images taken with this combo show the distortion or banding around the borders. This issue has been reported in many of the Adobe community forums and I believe updates were made to certain lenses to correct the issue but maybe since the RF 24-105 2.8 Z lens is brand new, either Adobe is unaware the same issue is happening to this new lens or the lens is just not supported as of yet in updates. I have a sample image to upload so you can see the distortion. I am using all the latest versions of Camera Raw and Ps. Using Mac Os.

[NYNC]

This defect has been acknowledged by Adobe as a bug specific to the Lens Distortion profile for this lens. It was newly added to the Camera Raw 16.1 and LR Classic 13.1 updates in December 2023 just as the lens began to ship. Supposedly, Adobe will issue a bug fix. (See post from Rikk Flohr in this thread). If you turn off the profile, there's no artifact. 

[Sby]

Hi,

Same problem for me, R6 Mark I + Canon RF24-105mm F2.8 IS USM Z , artifacts appears from 41mm and above.

Here is the workaround which works for me until the fix (Lightroom 13.1)

1. In Library :

- import your image

- select the images with Lens and Focal Length filter

2. In Develop module : 

- Enable sync button

- Crop tool

- Enable Constrain to Image

Remove the artifact part, you loose few pixels in the process, but it doesn't seem to affect your original framing (really strange).

Don't forget to disable sync after !

Bests

1.

2.

[christians51631465]

Camera RAW 16.1.1 from End of Jan 2024 did not fix the issue. 

[seanson28]

Any developments on this? It's been 6 weeks, and yet it's still happening in Lr and Camera Raw. Seems unique to this lens and not sure why it isn't resolved yet. 

[NYNC]

Profile apparently fixed in latest Camera Raw update (16.1.1), but not in LR Classic as yet. If you bypass LR & open the raw file directly into Photoshop's Camera Raw, activating the profile does not introduce edge artifact. LR Classic's Develop module is Camera Raw, but it's a built-in version rather than the free standing and separately updateable Camera Raw shared by Photoshop & some other Adobe applications. LR won't lose the artifact until Adobe issues an update of LR that includes the improved version of Camera Raw. Hopefully, that will be the next LR update, but only Adobe knows.

[Visceral-Image]

In the interim, a solution I have found is to check the box "Constriain Crop" under the Transform tab. This will phisically crop off the problematic portion to each image, resulting in s a very slightly smaller image overall. I've found this works perfectly when applied as a batch to all images.

[davidr79950732]

Is anyone else having problems with the lens profile corrections in Ligtroom for the new Canon RF 24-105 f2.8? I'm getting crazy banding (looks like colored rectangles) along the edge of the frame with the lens profile corrections turned on. It seems to affect pictures taken at the longer side of the zoom range, wide angle photos are fine. I have the latest lightroom updates.

The issue looks so blocky that I'm thinking it's a simple bug that can be fixed. I tried editing the same photos in a Adobe Raw and had no problems. The issue only appears in LR and RAW images opened into Photoshop via LR.

Here's a link to a YouTube short i created that shows the problem https://www.youtube.com/shorts/j5K4U8MDcWA