Re: Focusing

[George L Smyth <GLSmyth@xxxxxxx>]

Daniel Cardish wrote:
> 
> At 12:28 AM 28/9/96 +0100, you wrote:
> >They were out of focus because of your distance to the subject.  The
> >closer you are, the more critical the focus.  Certainly, your aperture
> >had even more to do with the situation.  Bottom line, if you're stopping
> >down and shooting towards infinity, you'll be just fine.  Otherwise, use
> >the mark.
> 
> I don't think this solves the problem.  I was very carefull when I focused
> the camera.  The point of focus in the rsulting negatives were off by just
> the amount that I had adjusted via the IR focus mark on the lens.  In other
> words, if I relied on visual focus only, the negatives would have been in
> proper focus.

Okay, in that case the lights you used gave an overwhelming amount of
visible light and little infrared radiation.

One of my girlfriend's favorite pictures of herself is one I took of her
using Konica IR in the woods.  I focused carefully on her face and left
things alone, shooting through a #25 filter.  I had to open the lens up
because of the lack of light.  As expected, her face was slightly out of
focus (the "correct" focal length could be seen on the forest floor). 
It is probably her favorite because this helped hide some wrinkles. <g>

george

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

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Topic No. 11