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PostPosted: Thu Oct 23, 2014 1:12 am 
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Joined: Tue Sep 07, 2010 11:13 am
Posts: 135
Hi

I'm thinking of trying out IR photography. I have lee filter system, but are there 4x4 IR filters?
When I google etc, I'm a bit confused about the hits I get.
And I can't really find any tutorials where they use lee filters for IR photography.
They all use circular screw in type filters

Any one have experience with it?

M


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PostPosted: Thu Oct 23, 2014 7:03 am 
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Joined: Wed Apr 08, 2009 2:29 am
Posts: 733
Quote:
I have lee filter system, but are there 4x4 IR filters?

Yup.

http://www.leefilters.com/index.php/cam ... y/infrared

If you're in the U.S., you can click over to B&H or Adorama via Gordon's "support me" page (linked above right) and search for "lee infrared filter". Both shops list 87 and 87C versions.

Quote:
And I can't really find any tutorials where they use lee filters for IR photography.
They all use circular screw in type filters

Use should be pretty much the same.

Mark


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PostPosted: Sun Nov 02, 2014 4:10 pm 
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Joined: Tue Sep 07, 2010 11:13 am
Posts: 135
Thanks

B&H has 87 and 87 C
Adorama has 87P

I can't see what the difference is

It says it's for ultraviolet film, it will be ok with digital I guess - I have done the test where you see if the the IR on a remote control etc, is visible through the camera


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PostPosted: Fri Nov 07, 2014 5:27 am 
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Joined: Wed Apr 08, 2009 2:29 am
Posts: 733
The difference between the 87 and 87C is the frequency/wave length of light that is passed through. (The "C" is longer; more infrared.)

I believe the "P" designates polyester filter material, as opposed to gelatin, for example.

Mark


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PostPosted: Mon Nov 10, 2014 10:05 pm 
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Joined: Tue Sep 07, 2010 11:13 am
Posts: 135
So the 87 and 87c is a piece of gelagtine you stick on to one of your filters filter, and the P filter is a "real" filter, you slide into the filter holder?


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PostPosted: Thu Nov 13, 2014 1:55 am 
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Joined: Wed Apr 08, 2009 2:29 am
Posts: 733
I'm pretty sure both/all are pieces of glass with whichever material coated/applied onto said glass. But you could confirm by contacting Lee.

Mark


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