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Canon 6D question- corners of photos

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Shea Smith

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I recently bought a 6D and after returning from vacation, I saw that quite a few of the images had a kind of smudge on the corners like this sample image. I used the Canon 24-105mm f/4 L IS USM lens and the smudges are on all types of photos throughout the city in all kinds of weather. Is this an equipment issue or a photographer issue?

Thanks,

Shea





ce443eaf3dd146e8a6bdaeab95755d15.jpg
 
That is a vignette. I don't know much about that lens, but it may vignette at 24mm, or you have a screw on filter on the lens, which can cause vignette. It is not an error, it just happens.

Some one else will blind you with science shortly in order to further describe what you are seeing.
 
I've read another thread at this site with the same problem. I can't say there was a resolution to the question of what's causing it, but others did suggest taking the filter off, taking pictures and seeing if the corners still darken. I have the same camera/lens combo with a Hoya clear UV filter and have not experienced the same problem. It may be your copy of camera or lens. Good luck.

amac
 
Should it turn out to be the filter and not the improperly inserted hood, consider getting a low-profile (slim) filter, many filters come in "normal" (cheaper) and "slim" (a few bucks more), and if you use wide angle, the slim filter is the one to get.
 
Shea Smith said:
Shea Smith wrote:

I recently bought a 6D and after returning from vacation, I saw that quite a few of the images had a kind of smudge on the corners like this sample image. I used the Canon 24-105mm f/4 L IS USM lens and the smudges are on all types of photos throughout the city in all kinds of weather. Is this an equipment issue or a photographer issue?

Thanks,

Shea

ce443eaf3dd146e8a6bdaeab95755d15.jpg
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There is a bit of vignette with this lens at its widest, but this image shows much more than the lens itself should produce. (The lens vignette is easily countered using lens corrections in DPP).

The hood placed diagonally might have caused this, along with the other options mentioned (i don't know filters because i'm not using much filters myself).

Playing with contrast/curves, may also create a much harder vignette than normal.

-Yngve
 
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I have a 17-40L that had no vignetting on my 60D at 17mm. When I got a 5D it vignetted like what yours is doing. Then I noticed when I got a low profile filter, the vignetting minimized to no filter levels....the 17-40L is known to slightly vignet on a FF. Very easy to fix in PP.
 
Zoom the lens to 24mm and shoot the sky (but not the sun). Remove the filter and shoot again, then remove the hood (if you have one) and take a third shot. This will tell you where the culprit is. There's a 95% chance this vignetting is being caused a a too-thick filter.
 
I have the same kit and don't have vignetting to your degree.. most probably your filter if it is not because of the lenshood not completely screwed in. Do you have a filter, and if so which brand/model?

I'm using the standard Hoya HMC UV filter and there aren't any problems for me.. :)
 
It's normal to see a level of darkening of the corners with this combo, but this isn't normal. What you're seeing is certainly "mechanical vignetting", i.e. it's something physical, either a filter or lens hood (or if the lens was damaged, the lens barrel). No 1 suspect would be a filter.
 
Polarizer filter?
 
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