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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 13 Nov 2010 (Saturday) 12:26
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24-105 vignetting

 
musso
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Nov 13, 2010 12:26 |  #1

i have a 5D MKII and a 24-105 when i shoot at 24mm with a cokin p filter. i get vignetting very bad how do i correct this.

thank you
joe




  
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yjt
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Nov 13, 2010 12:37 |  #2

it's normal to have vignetting at the wide end if you use a full frame and 24-105


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musso
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Nov 13, 2010 12:42 |  #3

is there any way to correct this.




  
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musso
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Nov 13, 2010 12:43 |  #4

should i just shoot a little farther back and crop it to the desired image.




  
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Mike ­ K
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Nov 13, 2010 12:54 |  #5

musso wrote in post #11277495 (external link)
i have a 5D MKII and a 24-105 when i shoot at 24mm with a cokin p filter. i get vignetting very bad how do i correct this.

The 24-105 will optically vignette on full frame at f4. That is there will be a gradual darkening in the corners. Stopping down will moderate or minimize this effect.

I presume the vignetting you are talking about is mechanical vignetting; you see very dark lines of the edges of the frame from the filter holder being in view. Unfortunately the Cokin P holder does not have a wide angle adapter which would allow the front of the lens to protrude into the holder hole. The P holder is too small a hole for a 77mm or 82mm lens to fit inside. Cokin does sell a P filter holder with just one slot. This has less depth and will minimize or eliminate vignetting and will work if you use only one filter slot. You can diy by taking a hack saw to your 3 slot P filter holder and cutting off the outer 2! This works fine too, I've done it.
Mike K


Canon 6D, 1DmkII, IR modified 5DII with lots of Canon L, TSE and Zeiss ZE lenses

  
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Fliger747
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Nov 13, 2010 12:56 |  #6

Get rid of the Cokin.... For some lenses at the wide end, and this is one of them, use the "thin" style filters. I am able to use a BH regular thickness Polar on this lens, but some thicker ones will vignette. The thin filters generally are made so by not having threads at the front.

Good luck! T




  
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Carlton7
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Nov 15, 2010 16:25 |  #7

Are you using the standard cokin filter holder? If so, you can get the wide able/low profile cokin filter holder instead (or cut the front retainers off a normal holder. Are you attaching the cokin adapter ring ontop of a UV filter on your lens or directly onto your lens? Worst case, you can handhold the filter in front of the lens when you shoot. The more expensive way would be to upgrade to the cokin X series or the Lee filter system which uses a larger size filters.




  
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24-105 vignetting
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