topic Re: R6 Chromatic Aberration, Diffraction, not sure? in EOS DSLR & Mirrorless Cameras

R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Thu, 12 May 2022 16:28:32 GMT

I was noticing on a recent sports event that my R6 paired with my EF 24-105 f/4 (vello adapter) showed significant chromatic abberation (I think) -- see attached image. The R6 settings for abberration are ON. I've not seen this before. Anyone experience this ?

Re: R6 Chromatic Aberration, Diffraction, not sure?

kvbarkley — Thu, 12 May 2022 17:04:44 GMT

Does the camera know it has an EF lens? Is the Vello adapter masking the lens type?

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Thu, 12 May 2022 17:27:28 GMT

R6 reads the lens model correctly in the menu settings

Re: R6 Chromatic Aberration, Diffraction, not sure?

Tronhard — Thu, 12 May 2022 18:56:38 GMT

What were your settings for taking this shot, esp. shutter speed?

Have you repeated this by shooting other objects that are not moving?

Re: R6 Chromatic Aberration, Diffraction, not sure?

jrhoffman75 — Thu, 12 May 2022 20:39:42 GMT

It seems t be limited to the very “white” (maybe blown out) regions of your subject. Could be a result of your software?

CA is generally all around.

Can you post a link to file out of camera? Preferably RAW.

Re: R6 Chromatic Aberration, Diffraction, not sure?

Waddizzle — Thu, 12 May 2022 21:59:12 GMT

The posted image is only 998 x 691 in size. This could explain part of the issue. Did you capture the original as RAW and apply any lens correction?

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Thu, 12 May 2022 22:27:06 GMT

1/1600 s f/4, ISO 160, Focal length 60mm

I've seen on a few other pics but I shot ~ 7000 that day and most are ok.

The image I attached is a screen shot. I'll attach a jpeg

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Thu, 12 May 2022 22:29:06 GMT

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Thu, 12 May 2022 22:35:18 GMT

I'm using LightRoom and both the RAW image and post processed jpg show the abberation.

Re: R6 Chromatic Aberration, Diffraction, not sure?

Waddizzle — Thu, 12 May 2022 23:47:46 GMT

@OnShotImages wrote:
I'm using LightRoom and both the RAW image and post processed jpg show the abberation.

Thanks, for the update.

Remember. The camera only records what the lens sees. CA is created in the lens, not the camera. Again. If you are shooting RAW, are yo applying any lens correction?

Re: R6 Chromatic Aberration, Diffraction, not sure?

Waddizzle — Thu, 12 May 2022 23:49:43 GMT

@OnShotImages wrote:

This image looks pretty good at actual size. Are you using any lens filters?

Re: R6 Chromatic Aberration, Diffraction, not sure?

jrhoffman75 — Thu, 12 May 2022 23:53:30 GMT

Can you upload the RAW file to Dropbox or One Drive?

Re: R6 Chromatic Aberration, Diffraction, not sure?

Tronhard — Fri, 13 May 2022 00:37:39 GMT

If it was simple diffraction, I would expect to see the halo effect around the person, or at least on the brightest areas, but I am intrigued that is found only on the cyclist's trailing edge...

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Fri, 13 May 2022 02:02:07 GMT

No filters used. Appreciate everyone's attention to the issue.

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Fri, 13 May 2022 02:03:22 GMT

Yes lens correction is applied in LR. Thanks for clarifying the source of CA - I'm not technical enough about cameras and such.

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Fri, 13 May 2022 02:09:11 GMT

https://drive.google.com/file/d/1ncu0RQTOZDmgCcw7AOzQA8ijG2ZVSEvd/view?usp=sharing

Re: R6 Chromatic Aberration, Diffraction, not sure?

jrhoffman75 — Fri, 13 May 2022 13:28:19 GMT

Looks like you need to authorize access. I sent request.

Re: R6 Chromatic Aberration, Diffraction, not sure?

jrhoffman75 — Fri, 13 May 2022 13:46:35 GMT

I think what you are seeing is "blooming".

DPP reports the RGB values of the area around the edge of the helmet and shirt as 255,255,255 (i.e. locally blown out).

Re: R6 Chromatic Aberration, Diffraction, not sure?

ebiggs1 — Fri, 13 May 2022 17:02:21 GMT

"Are you using any lens filters?"

If you are discard it. Secondly, get a Canon adapter. But that could actually be what the camera and lens saw if it was a hot day. Heat wave rising from the rider.

Re: R6 Chromatic Aberration, Diffraction, not sure?

OnShotImages — Fri, 13 May 2022 17:48:01 GMT

Thanks for investigating this...I need to up my tech knowledge!