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Thread started 13 Sep 2012 (Thursday) 12:28
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Use a Cokin frame or not with the filter

 
tvphotog
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Sep 13, 2012 12:28 |  #1

I've seen a number of pros shoot with a Lee or Cokin soft graduated rectangular filter by simply holding it over the lens during a long exposure on a tripod. What?

I think that any movement of your hand holding the filter will jiggle the camera. Why don't they use a frame to hold the filter?


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koffikapp
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Sep 13, 2012 12:47 |  #2

I think they do it to use a technique called "feathering", where they move the filter around slightly during the exposure to make the gradiation less obvious.




  
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tvphotog
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Sep 13, 2012 14:01 |  #3

koffikapp wrote in post #14986275 (external link)
I think they do it to use a technique called "feathering", where they move the filter around slightly during the exposure to make the gradiation less obvious.

But holidng it right against the lens on a long exposure?


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koffikapp
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Sep 13, 2012 16:49 |  #4

tvphotog wrote in post #14986626 (external link)
But holidng it right against the lens on a long exposure?

Huh, not sure, to avoid vignetting on very wide-angle lenses maybe? Beats me, I use a Cokin P holder so I get a bit of vignetting with my 17-40, but it's no big deal.




  
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Jon
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Sep 13, 2012 17:55 |  #5

Sure they were holding the filter in direct contact with the lens ring? Might they have put some tape or something around the edges of the lens ring to reduce the risk of scratching in that case? But I'd be worried about communicating shake to the camera/lens combo that way if it were me. I think that if I were to adopt that as my standard practice I'd also start by putting an adapter ring on the front of the lens and putting tape or something on that to reduce the probability of scratches; but as I said, I'd worry about transmitting vibration to the camera. After all, isn't that why people use remote releases?


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Sep 13, 2012 18:20 |  #6

koffikapp wrote in post #14987314 (external link)
Huh, not sure, to avoid vignetting on very wide-angle lenses maybe? Beats me, I use a Cokin P holder so I get a bit of vignetting with my 17-40, but it's no big deal.

Ditto. I did this exactly for this purpose.


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S_Egbert
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Sep 13, 2012 20:03 as a reply to  @ mzondeki's post |  #7

I use my grads hand held quite often. It's quick and easy and no lost time when the light is changing fast, but if it's going to be a long exposure, the holder goes on.


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klr.b
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Sep 14, 2012 03:29 |  #8

To add to everything else, those filter holders were almost impossible to get for a while.


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Sep 14, 2012 09:08 |  #9

Cokins? Not that I recall. The Lee holders were, but I don't recall seeing anything about either the Cokin P (84 mm) or Z-Pro (100 mm) holders being hard to find - just not as well thought of as the Lee models.


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Sep 14, 2012 14:07 |  #10

Has anyone tried Cokin holder with Lee GND filters? For example I remember reading about schneider filter holder will not hold Lee filters due to their thickness.
There are some Lee FK and filters on ebay. Real issue is much is buyer willing to pay due to supply and demand curve :-)


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klr.b
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Sep 15, 2012 03:28 |  #11

Jon wrote in post #14990028 (external link)
Cokins? Not that I recall. The Lee holders were, but I don't recall seeing anything about either the Cokin P (84 mm) or Z-Pro (100 mm) holders being hard to find - just not as well thought of as the Lee models.

Yeah. When the Lee holder was impossible to get, I think more people started buying the Cokin Z-Pro holder. Then the supply ran out at a bad time because I think Cokin had stopped the production for a while. Anyway, people were desperate to get either, and Ebay prices rocketed. I never bought filters, but I bought the Cokin Z-Pro and the expensive CPL. I never used them, so I figured I might as well sell them to someone who needed it. I could have sold them for double, but I ended up selling to members here at cost.


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Use a Cokin frame or not with the filter
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