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Thread started 28 Jul 2012 (Saturday) 17:40
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Singh-Ray polarizers for Cokin P, ring or sprocket mount?

 
koffikapp
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Jul 28, 2012 17:40 |  #1

I made a similar thread in Nature & Landscapes Talk but haven't got any replies yet, and this subforum seem to have more traffic...

Anyway, I recently bought a set of Singh-Ray ND grads for use with Cokin P, of which I have both the wide-angle and standard holders. I originally wanted to use a screw-in circular polarizer on the lens and then mount the holder to the filter, but found it was a bit of hassle turning the polarizer while trying to keep the holder stationary. I'm therefore looking into getting a polarizer from SR for use with the grads, I'm thinking either a LB Warming or Color Combo, and maybe a Gold'n'Blue.

My question is, for those who've used this system, if it's better to get the sprocket rather than ring mount? I will probably use the polarizers in combination with the grads for the most part, and I guess I could just handhold the grads, but I might want to use the polarizer + two grads on the standard P holder. As for the wide holder, would mounting a sprocket polarizer result in the filter edges being visible on 17mm on FF? I'm using a 5D II with a 17-40, and the holder itself doesn't vignette @17mm.

Also, if anyone who've used the SR LB Warming/Color Combo, I'd love to see some shots with/without the filter if you happen to have some.

Cheers!




  
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koffikapp
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Jul 29, 2012 14:58 |  #2

No one has any opinions on sprocket type polarizers?




  
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PG1
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Jul 29, 2012 17:29 |  #3

I use sprocket mount SR LB warming polarizer on the Lee kit. Tried it out recently - worked well. I put it in the closest slot (to lens) and grad ND in the 3rd spot (second spot is not usable with the sprocket mount in the first spot) - no vignetting with the 17-40 at 17 on 5DII.


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koffikapp
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Jul 29, 2012 18:37 |  #4

Nice to hear there's no vignetting, but kind of a bummer if you can only use one grad together with the polarizer. Wonder if it applies to the Cokin holder as well? The Lee kit is larger than Cokin P though, equivalent to Cokin Z-Pro, or have I misunderstood?




  
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Jon
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Jul 29, 2012 18:38 |  #5

Right - the Cokin P filters are only 85 mm; the Z-Pro and Lee are 100 mm (4"), so less vignetting especially at wide angles and with round filters in the equation.


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koffikapp
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Jul 29, 2012 18:43 |  #6

Thanks for clearing that up. I guess that means vignetting could be present with the P sized filters.




  
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PG1
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Jul 29, 2012 18:53 |  #7

Correct - Lee is Z-pro equivalent.

I have not tried it, and not sure it will work, but you could put the sprocket mount polarizer in the 3rd spot and use the first 2 for square filters.

FWIW, the setup I mentioned first is what Darwin Wiggett uses and recommends...

koffikapp wrote in post #14787215 (external link)
Nice to hear there's no vignetting, but kind of a bummer if you can only use one grad together with the polarizer. Wonder if it applies to the Cokin holder as well? The Lee kit is larger than Cokin P though, equivalent to Cokin Z-Pro, or have I misunderstood?


Too much gear, not enough skill or time!
5DIII, 6D & 7D; 16-35 L, 24-70 II L, 70-200 f/2.8 II L, 100-400 L, 135 L, 35 L, 24 TSE L, 50 1.4, 85 1.8
Extender 1.4 II. 580 EX. Gitzo 1541T, 3541LS, Markins Q3T, Q20.

  
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Singh-Ray polarizers for Cokin P, ring or sprocket mount?
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