Re: Focusing

[jeffs@xxxxxxxxxxxxx (Jeff Spirer)]

At 1:06 PM 9/27/96, Bobbie Doyle wrote:
>        If Konica peaks at 750nm and Kodak extends to 900. Would Konica be
>as sensitive to focusing as Kodak? My lens does not have an IR mark, so
>when I focus I slightly compensate toward the closer distance, (hope I've
>been doing that right)! Would the Konica be more forgiving since it does
>not extend as far?  In other words, should I treat the Konica the same as
>I would Kodak in regard to focusing.
>
>Bobbi

The Konica Hexar has automatic IR correction for its AF system (this is a
$35 upgrade or is included in some of the "special" editions.)  This was
one of the reasons I bought it.  When you load IR film, you have to tell it
if it is Kodak or Konica IR, because it uses different focusing corrections
for each of them.

I would assume that Konica knows what it is doing in this regard, so it
would appear to indicate that there are different focusing points for the
two films.


Jeff
jeffs@xxxxxxxxxxxxx
http://www.hyperreal.com/axiom/



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End of INFRARED-PHOTOGRAPHY Digest 77
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