--- "Elliott, Rolland" <[EMAIL PROTECTED]> wrote:
> Someone told me that you shouldn't use IS lenses
> with infrared film because
> the Image Stabilization electronics use infrared
> LED's (light emitting
> diodes) that cause flare and wierd exposure problems
> with IR films. Any
> truth to this?
IS does not cause any kind of problems with infrared
film. IS does not emit any kind of light. What your
source might have been refering to is the sprocket
counter for film advance. Except for the top cameras
(EOS 1n, 1v, etc) and maybe some older ones (620?)
this is implemented with an LED. This one can fog (by
your source interpreted as flare) the film to a
certain degree which depends on the camera model. But
then again this does not cause any exposure problem.
The exposure problem is probably a problem of the film
itself. Parts of the light (IR-part) you cannot see
which can cause an exposure problem.
Robert
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