infra red exposure

Film Photography & Darkroom discussion

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pagan
Posts: 4
Joined: Wed Jun 27, 2012 2:46 pm

infra red exposure

Postby pagan » Wed Jun 27, 2012 2:56 pm

Hi i am new to infra red film photography ,and I have a problem .
How do I calculate exposure ? I am using Rollei retro 80 film and a 720mn filter a hand held light meter will be useless and the ttl light meter on camera ( an aged but very loved Mamiya nc 1000) will not register , is there a magic (idiot proof ) formula I can use ??


Thanks Pagan


Ornello
Posts: 833
Joined: Thu Jan 19, 2006 9:49 am

Re: infra red exposure

Postby Ornello » Thu Jun 28, 2012 2:24 pm

pagan wrote:Hi i am new to infra red film photography ,and I have a problem .
How do I calculate exposure ? I am using Rollei retro 80 film and a 720mn filter a hand held light meter will be useless and the ttl light meter on camera ( an aged but very loved Mamiya nc 1000) will not register , is there a magic (idiot proof ) formula I can use ??


Thanks Pagan
You have to experiment. I bet a lot of exposure is required.

Keith Tapscott.
Posts: 506
Joined: Tue Jan 17, 2006 8:58 am
Location: Plymouth, England.

Re: infra red exposure

Postby Keith Tapscott. » Mon Jul 02, 2012 4:34 am

pagan wrote:Hi i am new to infra red film photography ,and I have a problem .

How do I calculate exposure ?

I am using Rollei retro 80 film and a 720mn filter a hand held light meter will be useless and the ttl light meter on camera ( an aged but very loved Mamiya nc 1000) will not register , is there a magic (idiot proof ) formula I can use ??


Thanks Pagan
The film manufacturer or supplier should be able to help with filter exposure factors. You should also be able to download a technical information publication from Rollei for this film.

pagan
Posts: 4
Joined: Wed Jun 27, 2012 2:46 pm

Re: infra red exposure

Postby pagan » Mon Jul 02, 2012 3:31 pm

Thanks I did a little digging and found out that is is the same film as agfa aviphot pan 80 and I have down loaded a spec sheet (http://www.maco-photo.de/files/images/R ... n80_en.pdf ) from them ,at a glance I think it tells me what I need to know ,I will have a good look later in the week when I have more time
Thanks for the Idea
Pagan


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