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Author Topic: dark vignette in top right hand corner- help!  (Read 2686 times)

billystrodder

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dark vignette in top right hand corner- help!
« on: October 23, 2013, 08:00:18 AM »
I shoot up to 5,000 dance photographs in one day in peak season.... high key background with Canon 5D Mk2
I cant come home and edit this dark shadow from all of them!!!!
After hours of  tests and many configurations I have discovered that this vignette is caused by this camera - proven by when I shoot with the camera upside down because the shadow moves to the left!
I have tried both 5D bodies I own and lenses 24-70 F2.8 and 70-200 F2.8.

Please see attached. What is going on!

Pic 1 - f/8 1/200 ISO 200 24-70@43
Pic 2 - same setting as Pic 1 but camera upside down
Pic 3 - f/8 1/200 ISO 200 24-70@58mm



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dark vignette in top right hand corner- help!
« on: October 23, 2013, 08:00:18 AM »

Sporgon

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Re: dark vignette in top right hand corner- help!
« Reply #1 on: October 23, 2013, 08:07:18 AM »
If the last picture was taken with the camera up side down could it be the mirror is not flipping fully up before shutter fires.

neuroanatomist

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Re: dark vignette in top right hand corner- help!
« Reply #2 on: October 23, 2013, 08:10:21 AM »
This is happening with two bodies and two lenses??  If so, I'd suspect a software issue, such as bad lens correction profiles. Or an issue with your lighting setup (3rd party wireless triggers not playing nice with your Xsync speed).
EOS 1D X, EOS M, and lots of lenses
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billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #3 on: October 23, 2013, 08:16:19 AM »
I shoot RAW and this vignette is evident on the LCD before it hits software. It is not a lighting issue as this vignette is present wherever I frame on set- even in the brightest location on the background. You can see that with Pic 3.
Sync speed all ok.
« Last Edit: October 23, 2013, 08:26:40 AM by billystrodder »

Sporgon

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Re: dark vignette in top right hand corner- help!
« Reply #4 on: October 23, 2013, 08:20:01 AM »
Sorry I mis read your post. This is happening on two bodies ? But you said you had isolated the problem to this camera.
« Last Edit: October 23, 2013, 08:22:10 AM by Sporgon »

billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #5 on: October 23, 2013, 08:20:10 AM »
"If the last picture was taken with the camera up side down could it be the mirror is not flipping fully up before shutter fires." - thankyou this is great logic and something I didnt think about! will try a different shutter seed tomorrow - fast action shots best at 1/200 though!

neuroanatomist

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Re: dark vignette in top right hand corner- help!
« Reply #6 on: October 23, 2013, 08:20:53 AM »
To clarify - you can see the vignette with your eye, when looking through the optical viewfinder?  Also, is this just with one body+lens combo, or more than one?  Your original post, "I have tried both 5D bodies I own and lenses 24-70 F2.8 and 70-200 F2.8," suggests the latter.
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Re: dark vignette in top right hand corner- help!
« Reply #6 on: October 23, 2013, 08:20:53 AM »

billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #7 on: October 23, 2013, 08:21:31 AM »
yes problem isolated to the body... both bodies. Both perform the same in all test and variables. both lenses.

billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #8 on: October 23, 2013, 08:23:35 AM »
Vignette evident on LCD and in Bridge/Photoshop  and Aperture and even the finder window. Definately there.
Have tried two 5D bodies with both lenses- all combinations.
« Last Edit: October 23, 2013, 08:25:54 AM by billystrodder »

billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #9 on: October 23, 2013, 08:24:38 AM »
to clarify I cant see this vignette through the viewfinder when taking the shot.

billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #10 on: October 23, 2013, 08:27:02 AM »
I really appreciate your thinking about this guys.

neuroanatomist

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Re: dark vignette in top right hand corner- help!
« Reply #11 on: October 23, 2013, 08:36:04 AM »
If it's a mechanical issue (shutter problem, etc.), the likelihood of the exact same issue affecting two bodies simultaneously seems incredibly small - it's much more likely something systematic about your setup. Do you see this when you shoot with no strobe lighting - clear blue sky or blank white wall with ambient light?

Something else to try - does the vignette issue change with a lens at f/11 vs. f/2.8? 

You see the issue on the LCD, meaning it's in the JPG image (since that's what is shown on the review image).  Do you see it when you open the RAW files in your RAW converter (and if so, which RAW converter, and have you tried more than one?).
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billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #12 on: October 23, 2013, 08:45:19 AM »
Vignette issue gets worse with f/11
Can see it in the raw files in various RAW converters.
incedible that its happening with both bodies I know!
Lighting set up has been tried and tested. No matter where I frame - even putting the right top corner in the brightest hot spot the vignette is still there. Not evident in clear blue skies but will test this further tomorrow.

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Re: dark vignette in top right hand corner- help!
« Reply #12 on: October 23, 2013, 08:45:19 AM »

pwp

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Re: dark vignette in top right hand corner- help!
« Reply #13 on: October 23, 2013, 08:49:06 AM »
I've had odd vignetting from time to time; it's been the lens hood not fully rotated and clicked "home".
If it's across two bodies, this could be it.

-pw

billystrodder

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Re: dark vignette in top right hand corner- help!
« Reply #14 on: October 23, 2013, 08:50:19 AM »
I tried most tests without the lense hood. I was hoping that would be it the first time I removed it. :(
Thanks for thinking of this though.

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Re: dark vignette in top right hand corner- help!
« Reply #14 on: October 23, 2013, 08:50:19 AM »