topic Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment in EOS DSLR & Mirrorless Cameras

EOS 6 Mirrorless - Green Lines and Magenta Fragment

stevehvu — Tue, 06 Jul 2021 17:28:27 GMT

This issue is beginning to become bothersome and I was wondering if anyone has a solution before I send my camera off for repair.

On the camera screen, I see strange green and magenta lines and fragments when I actively use the camera. When I pull the files off my SD card, the JPEG images capture the green and magenta lines and fragments. However, when I open the RAW files on photoshop and lightroom the lines and digital fragments disappear.

Unfortunately, when I do any recordings the video has all of the green and magenta digital fragments and there is nothing I can do to remove them from the video.

I tried to update my camera's driver but that did not resolve the issue. At this point I am assuming my camera is defective even though I bought it brand new from Best Buy back in September...

This is an example of a jpeg file from the sd card after shooting with the EOS R.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

jrhoffman75 — Tue, 06 Jul 2021 19:08:53 GMT

Welcome to the forum.

Looks like it might be chromatic aberration.

What is chromatic aberration? - beginner's guide | Adobe

Which lens on your R6?

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

rs-eos — Tue, 06 Jul 2021 19:33:46 GMT

Are you speaking to the magenta lines around say the edges of the belt buckle? If so, see John Hoffman's reply about chromatic aberation.

However, I see three horizontal single-pixel cyan lines through the image along with quite a bit of magenta/cyan noise all throughout (especially the background). I'm not sure what the cause of that would be.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

jrhoffman75 — Tue, 06 Jul 2021 19:41:23 GMT

Can you link to a file sharing site and post a RAW file and a JPEG file of the same image?

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

stevehvu — Tue, 06 Jul 2021 19:42:41 GMT

Thank you!

I am currently using the Canon - RF 35mm F1.8 Macro.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

stevehvu — Tue, 06 Jul 2021 19:46:34 GMT

Here is a link to a Google Folder with a jpeg and raw files of the same image.

https://drive.google.com/drive/folders/1XWSIBA55hklVEMW1Jf6VZVQEJaAugUyV?usp=sharing

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

rs-eos — Wed, 07 Jul 2021 00:06:19 GMT

I was able to open your RAW image in Photoshop and it didn't contain any artifacts. Saved to a JPEG in sRGB color space and again, no artifacts at all. For some reason, the JPEG images being created in camera are containing strange artifacts.

Something's definitey going on then with your JPEG files and videos. I would call Canon and see if this may require a repair.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

stevehvu — Wed, 07 Jul 2021 01:26:23 GMT

Sounds good. Thank you for helping out!

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

Peter — Wed, 07 Jul 2021 04:46:59 GMT

The raw file. Shouldn't look like that.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

jrhoffman75 — Wed, 07 Jul 2021 10:22:46 GMT

I downloaded the files and processed them in Canon DPP.

I do not get the stepping that Peter shows.

One strange/interesting thing I did observe: I had DPP download the DLO lens data. When I turned on DLO the image would sometimes display the green lines and the red/greeen speckles if I scrolled the full size image in the display. It wasn't always showing, and it was transient (so I couldn't get a screen capture) but it was there.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

Peter — Wed, 07 Jul 2021 10:41:34 GMT

It is because I let RawTherapee show Bayer pattern before demosaicing. Not possible in DPP4. Note that the green line in JPEG is at the same place as one of the brighter "boxes" in the raw file.

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

jrhoffman75 — Wed, 07 Jul 2021 11:04:11 GMT

What's the meaning/cause of that then?

Re: EOS 6 Mirrorless - Green Lines and Magenta Fragment

Peter — Wed, 07 Jul 2021 12:14:14 GMT

Edit: Had some more time now. I had capture sharpening turned on in RawTherapee. When I disable it the pattern disappear.

I also tried in darktable and to check the Bayer pattern there. Nothing. Must have been an artifact from capture sharpening.