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Author Topic: Filters: Cokin P Series "Equivalent" quandary  (Read 5101 times)

K-amps

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Re: Buy one of these
« Reply #15 on: November 02, 2011, 02:29:59 PM »
http://www.bhphotovideo.com/c/product/628301-REG/Cokin_CBPW400_BPW400_Wide_Angle_Filter.html

I use it with a 17-35 on a 5D and it works well although, as I recall, not all the way down to 17mm.


Another great idea... I wonder if this will be compatible with the adapter ring I already have (it's not a Cokin... but Cokin compatible I think...)
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Re: Buy one of these
« Reply #15 on: November 02, 2011, 02:29:59 PM »

AJ

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Re: Filters: Cokin P Series "Equivalent" quandary
« Reply #16 on: November 02, 2011, 04:43:47 PM »
The Cokin P filter holder has three slots.  If you don't mind having only two slots, here's what you do: take a sharp utility knife and cut off the outer slot from the filter holder.  Voila, no more vignetting.  This 5 minute fix has served me well.

Good idea! ... however would like to know how wide can you go with 1 slot cut off (2 left) i.e. is 24mm ok?

I should have mentioned that I fixed my Cokin P filter holder for my Sigma 10-20 in this way.  So I can't tell you exactly how it's going to pan out for a 24-105 on a 5D.  However I can tell you there's quite a bit of gain in FOV.

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Re: Filters: Cokin P Series "Equivalent" quandary
« Reply #17 on: November 02, 2011, 05:04:40 PM »
The Cokin P filter holder has three slots.  If you don't mind having only two slots, here's what you do: take a sharp utility knife and cut off the outer slot from the filter holder.  Voila, no more vignetting.  This 5 minute fix has served me well.

Good idea! ... however would like to know how wide can you go with 1 slot cut off (2 left) i.e. is 24mm ok?

I should have mentioned that I fixed my Cokin P filter holder for my Sigma 10-20 in this way.  So I can't tell you exactly how it's going to pan out for a 24-105 on a 5D.  However I can tell you there's quite a bit of gain in FOV.

Do u have a FF or APS-C?
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Sigma 24-105mm F4 ART; EF 70-200 F/2.8L Mk.II; EF 100mm L F/2.8 IS Macro, 50mm F/1.8ii;  TC's 2x Mk.iii; 1.4x Mk.iii

AJ

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Re: Filters: Cokin P Series "Equivalent" quandary
« Reply #18 on: November 02, 2011, 06:02:11 PM »
crop

dilbert

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Re: Filters: Cokin P Series "Equivalent" quandary
« Reply #19 on: November 07, 2011, 07:41:20 PM »
The Cokin P filter holder has three slots.  If you don't mind having only two slots, here's what you do: take a sharp utility knife and cut off the outer slot from the filter holder.  Voila, no more vignetting.  This 5 minute fix has served me well.

There are two variations of the Cokin P holder.

One has three slots and the other has one: the BPW400 is a "Wide Angle Filter Holder for P Series".

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Re: Filters: Cokin P Series "Equivalent" quandary
« Reply #19 on: November 07, 2011, 07:41:20 PM »