Before I bought my D200, I researched the IR possibilities and my search resulted in the only real negative of the D200 (IMO): really strong ir blocking filter. Your Rebel took 30 sec for an exposure, eh? I have an IR filter that I could try with it. The last time I did, I got a really flat image. Where did you place the filter? I remember reading your(?) notes on using the e6 film for an IR filter, but i got the impression the filter was placed behind the lens. Just wondering how I could adhere it beneath my mirror without completely screwing up my gear. It'every green here in indonesia (a dramatic juxtaposition moving from egypt) and I'd like to find an alternative to buying a second dslr to send to the IR
doctor.
"The optimist believes this is the best of all possible worlds. The pessimist fears it's true" - J Robert Oppenheimer
----- Original Message ----
From: ADavidhazy <andpph@xxxxxxx>
To: List for Photo/Imaging Educators - Professionals - Students <photoforum@xxxxxxxxxxxxxxxxxx>
Sent: Thursday, February 14, 2008 11:35:44 AM
Subject: Re: Alternative to light blocking infrared filter
Roger,
> I assume that this won't work with DSLRs that have an IR filter over
> the sensor. Is that correct?
I tried it with my Canon Rebel and the combination worked quite well.
Pretty much the same as on the Fuji except for the fact that the Fuji
exposure time for an interior scene was something like 1/30 second while
the Canon needed something in the order of 30 seconds!! (this is an estimate
--- I don' recall the exact figures but the Fuji was significantly faster
due to it not having an IR blocking filter built in. But you can put a
"hot mirror" in front and them it behaves much like any other ccd camera
with built-in ir blocking filter.
I'll do some more testing ...
andy
From: ADavidhazy <andpph@xxxxxxx>
To: List for Photo/Imaging Educators - Professionals - Students <photoforum@xxxxxxxxxxxxxxxxxx>
Sent: Thursday, February 14, 2008 11:35:44 AM
Subject: Re: Alternative to light blocking infrared filter
Roger,
> I assume that this won't work with DSLRs that have an IR filter over
> the sensor. Is that correct?
I tried it with my Canon Rebel and the combination worked quite well.
Pretty much the same as on the Fuji except for the fact that the Fuji
exposure time for an interior scene was something like 1/30 second while
the Canon needed something in the order of 30 seconds!! (this is an estimate
--- I don' recall the exact figures but the Fuji was significantly faster
due to it not having an IR blocking filter built in. But you can put a
"hot mirror" in front and them it behaves much like any other ccd camera
with built-in ir blocking filter.
I'll do some more testing ...
andy
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