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Re: [OM] Focus and resolution, manual focus vs. AF

Subject: Re: [OM] Focus and resolution, manual focus vs. AF
From: Clyde Soles <csoles@xxxxxxx>
Date: Sun, 26 Mar 2000 14:24:15 -0500
The only real advantage for larger formats that I can see is a reduction in
grain in the negative. There's an interesting article about the various
formats on the photodo web site: http://www.photodo.com

Dirk, be careful. That's a rather deceptive pseudo-science article written to prove a preconceived notion. Some examples:

"And here is the big surprise: a 35 mm negative taken with the T-Max 100 is sharper than the large format negative taken with the Tri-X! Who would have thought it?"

Duh! It's hardly surprising that an old technology film with a rating of 320 does not compare favorably to a new technology film rated to 100.

"6) 9 x 12 with Sironar 150/5.6 at f22 and T-MAX 100. This image is the sharpest one, but the difference to 35 mm is suprisingly small."

Hmmm, seems to be a pretty major difference between 4 and 6...and that's just B&W. Throw color into the mix and the additional tonal information creates an even greater appearance of sharpness.

There's a lot more to big film than simply less grain as they imply. Just as there's a lot more to a lens than a single MTF grade though they'd have you believe otherwise.
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