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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 30 Oct 2013 (Wednesday) 18:33
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Which ND filter for my 85L ii?

 
thepilgrimsdream
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Location: Philadelphia
     
Oct 30, 2013 18:33 |  #1

Goal: Outdoor portraits with beauty dish and Narrow DOF

Settings:
Aperture = f/1.2
Shutter Speed = 160-200
ISO = 100

Not sure if I want a variable, solid or square holder.

What do you recommend? I'm not looking to spend $400 on a filter, but I don't want to compromise on quality either


6d, 5d Mark 2, 135L, 85L II, 17-40L, 85 1.8
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brit84
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Oct 30, 2013 18:45 |  #2

I use the hoya pro 1 digitals ND16 in 77mm for my zooms right now, not sure if ill get a step up ring or another filter for the 85LII i just got.


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bpark42
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Oct 31, 2013 11:07 |  #3

thepilgrimsdream wrote in post #16411914 (external link)
Goal: Outdoor portraits with beauty dish and Narrow DOF

Settings:
Aperture = f/1.2
Shutter Speed = 160-200
ISO = 100

Not sure if I want a variable, solid or square holder.

What do you recommend? I'm not looking to spend $400 on a filter, but I don't want to compromise on quality either

Given your fairly specific target exposure paramaters and the variability of outdoor lighting, a variable ND would probably be the best bet. If you went with screw on or square you would likely have to get two or three filters to cover sunny days vs. overcast vs. shooting in heavy shade, etc.




  
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amfoto1
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Oct 31, 2013 11:30 |  #4

I would avoid variable NDs... they tend to give color casts and/or uneven, splotchy effects... even the good (and very expensive) ones. Those things might be correctible in a landscape shot, but I would think more of a problem in a portrait.

I'd also suggest a correctly sized screw-in filter as that will allow you to use your lens hood, which is even more important once a filter is added to a lens.

On a sunny day, I figure you need 6 stops of ND (using the Sunny 16 rule, it's 7 stops to get to f1.0, but by using 1/200 you are "giving back" one stop).

A high quality ND such as a 72mm B+W 1.8 ND MRC (external link)(multi-coated) costs just under $160. With B+W and some other filters, each 0.3 of ND equals one stop (0.3 x 6 = 1.8). NDs are also sometimes refered to by their multiplication factor, where a 6 stop filter would be "64X".

You can fine tune for cloudy days, shade, etc. by increasing your ISO.

Or, if you needed a little more ND reduction for some reason, you could stack a weaker ND filter onto this one or use a C-Pol with it. Or you could use ISO 50 on your cameras.

In addition to the 1.8 ND (6 stops or 64X), other available B+W ND filters are 0.3 (1 stop, or 2X), 0.6 (2 stop or 4X), 0.9 (3 stop or 8X), and 3.0 (10 stop or 1000X, rounded off from 1024 actually).

Hoya and Marumi filters are also good, though I'd look for their multi-coated versions. They have somewhat different selection and naming convention than B+W. For example, Hoya offers an ND400 or X400 that they call a 9 stop filter (9 stops actually should be a 500X or 512X multiplication factor). Hoya also offers 1, 2 and 3 stop filters. I believe Marumi presently only offers 1, 2 and 3 stop ND filters.


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DieselTech
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Oct 31, 2013 11:36 |  #5

Get a 10 stop filter. A f/1.2 is super bright in a bright sunny day


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umphotography
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Oct 31, 2013 12:16 as a reply to  @ DieselTech's post |  #6

Im using Tiffen .6 and .9 NDs on my primes and getting great results.

this was the .9 in very bright afternoon light. The light here is straight off the camera

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bpark42
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Oct 31, 2013 16:19 |  #7

amfoto1 wrote in post #16413546 (external link)
I would avoid variable NDs... they tend to give color casts and/or uneven, splotchy effects... even the good (and very expensive) ones. Those things might be correctible in a landscape shot, but I would think more of a problem in a portrait.

In my experience there are no color casts with the good, high end variable ND filters (I use a Singh-Ray), and the uneven or splotchy effect only really occurs on wider lenses at or very near the maximum ND setting.




  
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Which ND filter for my 85L ii?
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