Re: Infrared sensitivity of Silicon PhotoDiodes

[Bill Agee <billagee@xxxxxxxxxxxxx>]

>
>This thread reminds me of a discussion I had some months ago about  the
>possibility of manufacturing an IR exposure meter. I was talking to a
>small electronics manufacturing concern that makes test equipment for
>the photographic industry.  They indicated that it would be easy to do
>but were not sure anyone would be interested.  Is anyone?  I have always
>had pretty good luck metering (or guessing) IR exposure but it does seem
>as though an IR meter would makes life easier. And exposure does seem to
>be the most asked question from thosew just getting into IR work.  What
>do you all think?
>
>Happy New Year!
>
>Howard Wells


Maybe I am showing my ignorance, but I am not sure what value an IR meter
would have. If it only measured IR light then what about the visible light
that many of us that use ir film either unfiltered or with red #25 filters
which do not cut off all the visible light.  It may be of some help to
those who use the opaque filters that cut off all the light.

The most valuable meter would be on that had a way to put the filter you
prefer on the meter.  A meter that had diodes that replicated the spectural
response of HIE exactly....then what about Konica...or Ilford?

Bill Agee

==========================
BILL AGEE
Laguna Beach, CA

billagee@xxxxxxxxxxxxx
http://www.redsilver.com
==========================


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