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Dark vignette appearing on one side of pics taken with Canon R6 when using studio strobes

Radison
Contributor

I'm having a problem with vignette/banding on one side of my pics when using studio strobes. At first I thought this might be caused by exceeding the shutter speed max resulting in banding from the curtain but the attached samples were all shot at 1/160 which is well within the 1/250 max for my Canon R6 when using studio strobes (Alien Bees). These were shot at 100ISO, 58mm, f6.3 using my Canon 24-70 f2.8 L lens. The strobes are set up either side of me at the same distance on the same power level

This seems to keep happening when I do studio shoots and I would really appreciate any thoughts on how to fix the issue. Thanks a lot!

 

Vignette is at the bottomVignette is at the bottomVignette is on the leftVignette is on the leftVignette is on the leftVignette is on the left

14 REPLIES 14

ebiggs1
Legend

First thought is placement of the strobes. You may have to move one or both to balance the scene. Your back drop may not be perpendicular to the camera so check that.

EB
EOS 1DX and 1D Mk IV and several lenses!

Thanks so much for your input EB. I really appreciate it. It's a great point but this has occurred on all my recent studio shoots and the band is always on the left when shooting portrait and then at the bottom when shooting landscape. This is despite having the strobes set up the same way and distance either side of me with the same power and the backdrop perpendicular. So I don't think the strobe balancing or perpendicular backdrop are the issue in this case. Do you have any other suggestions I can explore?

 

ebiggs1
Legend

Do and check the easy stuff first!  😊

EB
EOS 1DX and 1D Mk IV and several lenses!

ebiggs1
Legend

I know of no issues with inconsistent output from Alien Bee strobes but it is a possibility too I guess. Even though you have them spaced exact distance, BG right, try altering that distance to see if it either clears up or gets worse. If it improves or gets worse it could be a faulty strobe. Cameras tend to capture exactly what we tell them to, ... mostly!

 

I suppose so we need to eliminate the camera being at fault, you need to have Canon do a C&C on it. At the same time explain exactly what you are seeing.

 

This can be corrected in Lightroom or Photoshop.

EB
EOS 1DX and 1D Mk IV and several lenses!

Yes, that would be a good point about the strobes. What makes me think that's probably not the culprit for my issue is that it has occurred at different studios with different strobes. It seems like I might need to get the camera checked out. I do really appreciate you taking time to address my issue.

ebiggs1
Legend

However, ...

As you can see it is an easy fix in Photoshop.

933A9309.jpg

 

EB
EOS 1DX and 1D Mk IV and several lenses!

Yes, I think that's a good workaround until I resolve the cause. Did you use the linear gradient feature on the section with the vignette and reduce the shadow?? Would love to know a quick photoshop fix. Thanks!

Waddizzle
Legend

Light flicker?  How much ambient lighting is in the photos?  But, it is weird that it always seems to be in the same place, though.

--------------------------------------------------------
"The right mouse button is your friend."

Thank you for your input, I really appreciate it. It seems to occur each time I work with strobes in a studio. I don't notice the issue for outdoor shoots. In the studios I use they generally have some natural light from a skylight or windows which is consistent rather than flickering. Does that give you any ideas?

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