Re: Focusing

[Daniel Cardish <dcardish@xxxxxxxxxxxxx>]

At 12:28 AM 28/9/96 +0100, you wrote:
>Daniel Cardish wrote:
>> 
>> For 35mm work where I use Kodak HIE, I use a 35 mm
>> lens and  I never bother about adjusting the focus, assuming depth of field
>> will handle any discrepancy.  However, when I used Konica 750 with my
>> Hasselblad and 80mm lens with #25 filter, I DID use the IR focus adjust mark
>> on the lens, only to find that the pictures were out of focus  (I was using
>> a live model and didn't want to use too slow a shutter speed, hence I had to
>> use large lens openings).
>
>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.
>
>george
>
>-- 
> Handmade Photographic Images     
>  http://www2.ari.net/glsmyth
>
>


Dan Cardish  <dcardish@xxxxxxxxxxxxx>
                        <http://www.spherenet.com/dcardish/photo.htm>
        


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Topic No. 10