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Alan Browne <(E-Mail Removed)> wrote:
>I took photos of the same subject (tail side of a Brit pound coin) at
>the closest focus of the Hasselblad 120 f/4 Makro (mounted on a Sony
>a900). Images are at a slight angle to the subject, best focus is on
>the lower part of the coin.
>
>
>Hasselblad (Carl Zeiss) 120 f/4 Makro (f/8, 1/200, ISO 200)
>Full size:
>http://photo.net/photodb/photo?photo_id=9795863&size=lg
>
>100% crop:
>http://photo.net/photodb/photo?photo_id=9795862&size=lg
>
>
>Then compared to the Sony Carl Zeiss 135 f/1.8 at the same distance
>(f/4.5, 1/200, ISO 200).
>
>Full image:
>http://photo.net/photodb/photo?photo_id=9795867&size=lg
>
>100% crop:
>http://photo.net/photodb/photo?photo_id=9795864&size=lg
>
>The contrast seems higher with the Hassy lens,

An objective measure would be to do some processing of the image to
come up with the actual image's contrast. I don't know the math but I
know it can be done.

--
Ray Fischer
(E-Mail Removed)