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Old 29th of July 2009 (Wed)   #1
Peacefield
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Default 35L 1.4 on 5D2 - Vignetting due to Hood

Just got a shiney new 35L lens and mounted it to my 5D2 last night, quickly discovering that the lens hood causes vignetting.

The front element is so far out there, I hesitate to shoot without the hood, both to guard against glare and miscellaneous fingers. How do you address this?

Thanks.
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Old 29th of July 2009 (Wed)   #2
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

Quote:
Originally Posted by Peacefield View Post
Just got a shiney new 35L lens and mounted it to my 5D2 last night, quickly discovering that the lens hood causes vignetting.

The front element is so far out there, I hesitate to shoot without the hood, both to guard against glare and miscellaneous fingers. How do you address this?

Thanks.
I use the hood and I haven't noticed vignetting (nothing that is really problematic anyway).
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Old 29th of July 2009 (Wed)   #3
msowsun
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

Quote:
Originally Posted by Peacefield View Post
Just got a shiney new 35L lens and mounted it to my 5D2 last night, quickly discovering that the lens hood causes vignetting.

The front element is so far out there, I hesitate to shoot without the hood, both to guard against glare and miscellaneous fingers. How do you address this?

Thanks.
Which hood are you using?

Canon EW-78
Canon EW-78B
Canon EW-78C
Canon EW-78D
Third party hood or "knock Off"?
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Old 29th of July 2009 (Wed)   #4
Peacefield
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

Hmmm, that's why I asked; I don't recall every seeing anyone mention the issue so I'm thinking something is not right.

I'm remote and will have to check the model #, but it's the stock hood that came in the same box with the lens. It's petal shaped; I assume the EW-78C. Is this not standard? I see Canon also markets a flatter rounder hood, the EW-5411 like what fits on the 85mm. Is this what I need/should've had in the box in the first place? Might it have come with the wrong hood?

I'll have to say that, out of the box, this hood did not fit well. It required just a little light sanding and a touch of paste wax. That might have raised my concern had I not had to treat other Canon lens hoods the same way over time.
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Old 29th of July 2009 (Wed)   #5
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

did you buy this new or used?
sample pics (one with one w/o the hood)?
hard vignetting or soft?

but no, it should NOT vignette on FF.
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Old 29th of July 2009 (Wed)   #6
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

New, albiet off of eBay. It was clearly all new and factory packaged. I'll upload some pics this evening and confirm the model number of the hood.

So no vignetting with the (correct) tulip shaped hood?
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Old 29th of July 2009 (Wed)   #7
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

There will be *some* vignetting wide open on full frame. That is how the lens was designed (it was designed in the old film days, and digital is more sensitive in this department). But you shouldn't see heavy vignetting caused by the hood. Of course, there is always a possibility that you got a dud, it happens.
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Old 29th of July 2009 (Wed)   #8
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

I called back to the house and confirmed that it's the 78C hood which I believe is the correct model. And yes, I should say that I was shooting wide open. I recall (again, I'm remote and will have to post later) the vignetting to creep in only a little along the long sides of the image, but it was very pronounced.
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Old 29th of July 2009 (Wed)   #9
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

EW-78C is the correct hood, but it seems odd that it didn't fit well.

Check to see that you didn't get a "Fake" hood instead of the original Canon.
(If it says "For Canon EW-78C" it is a fake)



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Last edited by msowsun : 29th of July 2009 (Wed) at 09:32.
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Old 29th of July 2009 (Wed)   #10
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Talking Re: 35L 1.4 on 5D2 - Vignetting due to Hood

Just concuring with Mike (and peacefield) that the standard hood lens for the 35L is model # EW-78C...




I'm curious to see the vignetting on your 5Dmk2, peacefield... Post a sample shot when you can... Thanks...

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Old 29th of July 2009 (Wed)   #11
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

Please post pictures at f/1.4 with the hood, and without the hood. The hoods are designed for FF use. I am highly skeptical that the hood is causing vignetting, if you are using the proper hood for the lens.
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Old 29th of July 2009 (Wed)   #12
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

There is a correct way to install a petal lens hood and it it is installed the wrong way you will always get vignetting.
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Old 29th of July 2009 (Wed)   #13
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Default Re: 35L 1.4 on 5D2 - Vignetting due to Hood

Well, I am embarrassed (gosh; I hate when that happens). Possibly because it fit too tightly, I must not have had the hood twisted 100% into position. A little more sanding and a little more paste wax and the hood now fits the lens comfortably, it gets all the way into position, and there's no more vignetting.

Thanks, everyone, for your comments! Sorry 'bout that.
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