Exposing Infra-Red
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Posted 4/29/2008 8:21:39 PM


tiger

tiger

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Last Login: 11/10/2008 7:03:02 AM
Posts: 54, Visits: 388
Over the last year or so, I have read so many conflicting opinions on the correct way to expose IR films. It almost seems like some people don't want to open the club to new photographers. I have shot a few rolls of HIE in the past, but only using a #25 red filter, so the results were somewhat predictable. I now have the Cokin R-72 equivalent and have picked up an assortment of IR films to try. I have my last two rolls of HIE, some Maco Aura, and Ilford SFX.

Is there anyone here willing to help me out of this minefield?

Cheers,
Tom, on Point Pelee, Canada.


Tom, on Point Pelee, Canada
http://tomoverton.images.googlepages.com
Post #1084
Posted 4/29/2008 8:50:29 PM


pachyderm

pachyderm

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Last Login: Today @ 9:56:05 AM
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Hi Tom,

Unfortunately, I haven't shot IR film in many years, like you I shot it with a #25 Red Filter. I think Eric Rose has done some, so I'm sure he will pop on and answer your questions.

Robert M. Teague

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Post #1086
Posted 4/30/2008 4:42:41 AM


tiger

tiger

Group: Forum Members
Last Login: 11/10/2008 7:03:02 AM
Posts: 54, Visits: 388
roteague (4/29/2008)
Hi Tom,

Unfortunately, I haven't shot IR film in many years, like you I shot it with a #25 Red Filter. I think Eric Rose has done some, so I'm sure he will pop on and answer your questions.


Thanks, Robert. I will PM Eric here or over on the "other" site to get his opinion.

Thanks again,
Tom


Tom, on Point Pelee, Canada
http://tomoverton.images.googlepages.com
Post #1088
Posted 5/1/2008 4:36:10 AM


tiger

tiger

Group: Forum Members
Last Login: 11/10/2008 7:03:02 AM
Posts: 54, Visits: 388
Thanks to Photo-Bob for his private response. If I achieve success (and if the sun ever comes out) I will post back here.

Cheers,
Tom, on Point Pelee, Canada


Tom, on Point Pelee, Canada
http://tomoverton.images.googlepages.com
Post #1095
Posted 5/1/2008 8:15:53 AM
leopard

leopard

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Last Login: Yesterday @ 10:00:37 AM
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I've shot a bit of IR and can tell you once you get out of the visible range it gets a bit unpredictable if you don't know the IR characteristics of the environment you are shooting. I once made an IR lightmeter from Radio Shack parts but really didn't get any good calibration on it. It takes a bit of time and note taking to get familiar with how the light will behave, such as how the visible light compares with IR in the shade versus out in the open and what is making the shade as well. A tree shade is very bright in IR compared to what the visible light meter says because of the way the leaves reflect the IR but look at the shade in IR from out in the open and it is very deep looking. Concrete and rock don't act much different from visible light but the shadows are more contrasty because the sky is so dark when clear. If theres clouds out they pack a heck of a punch in IR reflectance. It takes some curiousity and experimenting to get the feel and you still can be totally surprised by what you get.

Gary Beasley
Post #1099