Archived posting to the Leica Users Group, 2007/04/05

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Subject: [Leica] IR Cut Contrast
From: mark at rabinergroup.com (Mark Rabiner)
Date: Thu Apr 5 09:01:12 2007

On 4/4/07 6:03 PM, "Tom Pastorello" <etruscello@yahoo.com> typed:

> Mark, I stated I was sharing my experience that my
> image results were more consistent with Schneider's
> research than Puts' research.  I did not say I did
> scientific research.  It is not the case either that I
> took hand held snap shots and blew them up.  I stated
> the variety of conditions under which I took pictures.
>  I did not add, and should have, that all were taken
> on tripod.  I compared filtered and non-filtered shots
> at all reasonable levels of magnification. The
> filtered images, on PC and print, consistently
> appeared to have higher overall contrast and sharpness
> of fine detail at high magnification.  The results of
> the comparisons were consistent. It unlikely that I
> may have shaken the tripod for all non-filtered shots
> only.  I evaluate an image on the basis of what I see.
>  If an instrument were to indicate that the
> non-filtered shots were technically more contrasty, I
> would still choose the image that appeared more
> contrasty (if that's my desired effect.)  I simply
> wanted to share my experience and ask for others'
> experiences with IR Cut filters.  Tom
> 
> 
> 
>  
The pictures you made how big? Or you used which loupe or microscope? I know
nothing about snapshots by the way that wasn't me.
And you figured you got better Micro-contrast how?


Mark Rabiner
8A/109s
New York, NY

markrabiner.com



In reply to: Message from etruscello at yahoo.com (Tom Pastorello) ([Leica] IR Cut Contrast)