I just bought a M 100/2.8 on your advice.  I don't need a macro, but I 
did need a 100/105 lens for field portraits of handlers with their 
dogs.  This is probably one of the easiest lens to focus for a guy who 
went mostly to AF because of bad eyes.  I love this lens.  Thanks for 
your great contributions to the PDML.

Ken

On Saturday 15 June 2002 02:16 am, Mark Cassino wrote:
> On macro vs non macro lenses: I have an M 100 f2.8 and a Kiron 105mm
> f2.8 macro (identical to the Vivitar Series 1 100mm f2.5). With the M
> lens it takes about a 100 degree turn of the lens to move form
> infinity to 2 meters focus distance. With the Kiron it takes about a
> 30 degree twist.  Yes - you can keep turning the Kiron forever till
> it gets to 1:1, but for fine adjustment of focus at longer working
> distances, non macros are better. (And thanks to Valentin Donisia who
> taught me this - though I argued the point with him at the time!)
-- 
Ken Archer Canine Photography
San Antonio, Texas
"Business Is Going To The Dogs"

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