Archived posting to the Leica Users Group, 1996/12/12

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Subject: Re: 35mm Eyes
From: Marc James Small <msmall@roanoke.infi.net>
Date: Thu, 12 Dec 1996 08:58:21 -0500

Charlie Love challenges my point on AF accuracy and demands proof.  For
written documentation, I can only quote factory literature, which is suspect
on its face.  

I do know several pros who shoot sports events (mainly races of one sort or
the other) with Canon AF gear, and they uniformly acknowledge that shooting
with a long, fast prime (2.8/300 L or so) will lead to a fair number of lost
frames, but that using the motor drive and a LOT of film ensures that some
of the shots are dead on.  Of course, these guys are shooting for magazine
and newspaper publication, and their shot may end up being printed in a 2"
by 4" corner of an article, so perhaps accuracy isn't all that important.  I
would guess the AF failure rate under these circumstances (fast, long prime
lens, rapidly shifting point of focus, rapidly shifting target) is 5% or so.

Marc

msmall@roanoke.infi.net  FAX:  +540/343-7315
Cha robh bas fir gun ghras fir!