Re: Konica IR ...!st time, hyperfocal focusing, and Stigmata

[Steve Hodges <shodges@xxxxxxxxxxxxxx>]

Eckhard Stephan wrote:
> 
> > You are right that the whole image being softened probably
> > indicates something different, as it should be sharp somewhere in the image
> > if it is a hyperfocal problem....whatever the case may be, maybe if I
> > tripodded or didn't blow up the image to 11 by 14....maybe I am too used to
> > sharpness from 4 by 5 and Tmax and the Konica is just less sharp (?)
> 
> I think the problem is that you didn't use
> a tripod.

The other problem may be aperture.  Using f/32 (from memory) on 35mm
renders the entire image so soft that it is _just_ acceptably sharp
("acceptably" means approx 0.25mm of fuzz on sharp edges in an 8x10
print).

But with IR, the problem of diffraction is far worse so f/22 could
easily cause the same problem with IR.  

Thus the overall lack of sharpness could simply reflect a too small
aperture used.  This is especially true if the smallest aperture was
used to gain the closest hyperfocal distance.

Steve
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