Fwd: IR in darkness

[Spearmint <minty@xxxxxxxxxxxxxxxxxxx>]

HELP!!!

Sorry to do this again, guess I should drop the email link from my page, 
can anyone help with the following questions I've been sent??

Thanks in advance :)
TTFN
Gavin

---------------- Begin Forwarded Message ----------------
Date:        29/1/99 6:56 pm
Received:    29/1/99 10:51 pm
To:          infrared@xxxxxxxxxxxx

Hello,
I have a few questions about infrared photography, which I am going to try
my hand at for the first time tonight. I have asked a lot of people a lot
of the basic questions, which leaves the more difficult ones for you. 
Maybe
you can help. First of all, I am going to be shooting exclusively in the
dark, outside at night. I will be using a flash, and will be shooting at
1/30 and/or 1/60, and will be bracketing between f 1.7 and f 10. Does this
sound right so far? I know that the film really can't be rated with a
standard ASA number, and also the aperture has very little to do with the
image, but my main concern right now is not to ruin the whole roll. I'd
like to start right and get at least a few good pictures out of  this. My
interest is in capturing infrared energy that is not visible to the human
eye for scientific purposes, not artistic. Do you have any other
suggestions? I have a 25 visible red filter that I am going to be using 
for
the time being, but I understand that there are three other filters that I
might be able to use, the 87, 87c, and the 89. Can you tell me anything
about the differences between these, and how the images that they will
produce will differ from the 25 - again, bearing in mind that my goal is
not artistic but scientific. Any help you can provide would be greatly
appreciated.


----------------- End Forwarded Message -----------------

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