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Canon 24-70 f2.8 (M1) heavy vignetting

Started Jul 29, 2015 | Discussions
Marc Plasschaert New Member • Posts: 6
Canon 24-70 f2.8 (M1) heavy vignetting

Hi,

I have had my 24-70 for many years on a 40D. I switched to a FF 5Dm3 and now I realise my lens performs like below at 24mm f2.8. Some vignetting @24mm is probably normal for this lens, but this ???

Any thoughts? Same experiences?

Cheers, Marc

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MutantLabs Regular Member • Posts: 222
Re: Canon 24-70 f2.8 (M1) heavy vignetting

That's a lot of vignetting! Does it change when the lens hood has been removed?

Do you have Lightroom or any other software that does automatic lens correction (including the vignetting)? If so, you can take a picture of an even white background and switch on the lens correction. It should then show a plain white image. If there's still vignetting after the correction, you lens shows more vignetting that it should.

AFAIK, even the in-camera correction (for JPGs) may do the same.

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hotdog321
hotdog321 Forum Pro • Posts: 21,141
Re: Canon 24-70 f2.8 (M1) heavy vignetting
1

Marc Plasschaert wrote:

Hi,

I have had my 24-70 for many years on a 40D. I switched to a FF 5Dm3 and now I realise my lens performs like below at 24mm f2.8. Some vignetting @24mm is probably normal for this lens, but this ???

Any thoughts? Same experiences?

Cheers, Marc

This is either a wrong size off-brand lens hood or a really thick filter(s). I very much doubt the lens had anything to do with this.

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Adrian Tung
Adrian Tung Veteran Member • Posts: 4,032
Re: Canon 24-70 f2.8 (M1) heavy vignetting

hotdog321 wrote:

This is either a wrong size off-brand lens hood or a really thick filter(s). I very much doubt the lens had anything to do with this.

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Agree. Corners that turn completely black are definitely abnormal.

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gavin
gavin Veteran Member • Posts: 8,242
Re: Canon 24-70 f2.8 (M1) heavy vignetting

I never see this. Looks like hood or thick/stacked filter?

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Sander 5D
Sander 5D New Member • Posts: 8
Re: Canon 24-70 f2.8 (M1) heavy vignetting

You can see the dark blue color in the sky, meaning at least a polariser is attached. If it is an older, thicker model, with a UV filter as well for example, it could easily show up at 24mm. Remove the filters and try again OP.

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FredVasilescu Regular Member • Posts: 225
Re: Canon 24-70 f2.8 (M1) heavy vignetting

Did you ever drop the lens?
I dropped mine once and it got this terrible vignetting, along with other issues as well well. Like excessive play in the front barrel and bad .focusing

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MutantLabs Regular Member • Posts: 222
Re: Canon 24-70 f2.8 (M1) heavy vignetting

While you're worrying about the vignetting, it might be appropriate to worry about sharpness (or the lack thereof) as well. That image is very unsharp and unless you've manually focused "just somewhere" without looking into the viewfinder, I'd be very worried.

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(unknown member) Veteran Member • Posts: 6,221
Re: Canon 24-70 f2.8 (M1) heavy vignetting

I'm betting it's your lens hood. Did you shoot this at 70 mm? With the hood on, try a test shot at 70 mm and another at about 40 mm or less. If it's the hood, you'll see this "vignetting" in the first shot but not the second.

I wonder if moving from a 1.6x sensor (your 40D) to a full-frame sensor made the 24-70 lens more susceptible to this problem. If so, you just need a different hood.

gavin
gavin Veteran Member • Posts: 8,242
Re: Canon 24-70 f2.8 (M1) heavy vignetting

The hood should not vignette at any focal length? May be the wrong hood would do it

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OP Marc Plasschaert New Member • Posts: 6
Re: Canon 24-70 f2.8 (M1) heavy vignetting

Thanks for all the good comments.

It was no vignetting as suggested a few times. I had a polarizing filter on a UV filter, which created the shadows at 24mm.

Cheers, Marc

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