Re: IR HAZARDS

[George L Smyth <GLSmyth@xxxxxxx>]

David Lee wrote:
> 
> Perhaps I don't interperate this excerpt from the IR FAQ correctly?
> 
> >From http://www2.ari.net/glsmyth/articles/ir_faq.htm
> --------------------------
> Another note: don't stop down too far! Diffraction is twice as bad
> with long IR waves as it is with visible light! Stopping down to
> minimum aperture is a NO NO!

Your interpretation is correct - I don't believe that the FAQ is, however.  As
the waves are longer, diffraction should be lessened.

BTW, I seldom shoot my IR images at an aperture wider than F8.  Diffraction has
never been an issue with me.  One might do their own comparisons.

george

-- 

Handmade Photographic Images
http://www2.ari.net/glsmyth/
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