Re: IR light meter (preview scope)

[ADavidhazy <ANDPPH@xxxxxxxxxxxxxxxxxx>]

> Very nifty indeed. Can you actually see the focus correctly on the
> ground glass? That almost sounds too easy. I'm gonna have to start
> checking around for prices on one. Is there a recommended model?

Chris,

Yes, it seems you can focus the camera ok but ... there are "problems".
Since you are making an image formed on the groundglass there is a decided 
"hot spot" in the center of the frame. The size of this hot spot is to some 
extent controlled by the focal length setting. Once you fill the frame of 
the camcorder with the size of the groundglass then it becomes difficult to
set the focus accurately (still easier than trying to do it visually, 
although you could easily achieve visual focus and then make a correction
or use a small aperture). In any case, the camcorder by itself, when fitted
with an IR filter will give you a general preview of the scene without 
having to look at the image formed on the groundglass (which is actually a 
pain to do anyway).

Andrew  o o  0 0 o . o  Davidhazy, Imaging and Photo Tech
         \/\/\/\/\/\/          http://www.rit.edu/~andpph
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