Visible Vignetting with RF100-500 + R5

[roush6ny]

 

 

Hi all

Noticing vignetting when viewing in equalize mode in almost all my photos. I’ve been using the same settings for 15 years with my aviation photography and I never saw this with my old 100-400 paired with the 70D

any input would be appreciated it. 

some sample photos attached (vignetting shows prior to editing) 

Thank you 

[johnrmoyer]

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@ebiggs1 wrote:

I love eagle shorts.

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Thanks. It was handheld from my car window. I included the eagles in this ebird checklist: https://ebird.org/checklist/S286148072 

It is also at: https://macaulaylibrary.org/asset/645908256  

I have very little skill at video, but the 2 Eagles are at: https://www.rsok.com/~jrm/2025Nov25_Salt_Plains_NWR/IMG_5086.MP4 

The tree they nested in last year was knocked down by a storm, so they are rebuilding in a different tree about 130 meters from the road. One is not permitted to leave the road in this area of the wildlife refuge.

[shadowsports]

Nest shot looks great.  I agree.  

OP's issue is likely  a camera settings, software issue (no lens profile) or other (less likely) if the lens was purchased used and had another issue.  We'll see if he replies.

[johnrmoyer]

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@shadowsports wrote:

Nest shot looks great.  I agree.  

OP's issue is likely  a camera settings, software issue (no lens profile) or other (less likely) if the lens was purchased used and had another issue.  We'll see if he replies.

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In addition to lens profile, "presets" in some software will not work the same with a different camera. But this just a guess.

If the OP is in fact using histogram equalization, then that is likely the problem. But this is just a guess. I used histogram equalization 35 years ago because it does not require much computation and computers were much slower then. Now I would adjust the gamma curve or apply curves to a histogram. Histogram equalization will exaggerate the vignetting. But the biggest difference is the switch from crop sensor to full frame sensor. With the EF100-400mm f/4.5-5.6L IS II USM on EOS 70D, all of the vignetting would have been cropped. Also, the RF 100-500 F4.5-7.1 IS lens has more measured vignetting than does the EF100-400mm f/4.5-5.6L IS II USM.

Measured vignetting for this lens: https://www.the-digital-picture.com/Reviews/Lens-Vignetting-Test-Results.aspx?FLI=0&API=0&FLIComp=0&...https://www.the-digital-picture.com/Reviews/Lens-Vignetting-Test-Results.aspx?Lens=1510  Canon RF 100-500mm F4.5-7.1 L IS USM Lens Vignetting 

From 2022: https://community.adobe.com/t5/lightroom-classic-discussions/vignetting-profile-correction-for-canon... 

I no longer use Adobe software, but doubt that combining a lens profile with histogram equalization is a good idea.