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Re: [OM] New 90mm Zuiko macr

Subject: Re: [OM] New 90mm Zuiko macr
From: Mike Gordon via olympus <olympus@xxxxxxxxxxxxxxxxx>
Date: Thu, 9 Feb 2023 21:44:55 +0000 (UTC)
Cc: usher99@xxxxxxx
Come closer Moose writes:
<<<<but as expected the
<<<working distance is a bit tight.  Close focusing distance in S macro mode 
(odd ball switch 
<<<which moves lens elements and lose max aperture goes to F5 or F5.6, (reviews 
were discordant)) 
<<<is 8.8 " with working distance 2.5."  (2:1 magnification).  Working distance 
at 1:1 
<<<only 3.7".

That's weird. Just set 60/2.8 to 1:1, and working distance is ~3.25 in.

Yes, it is weird.  Pulled those numbers from reviews--not clear if the "S 
macro" switch was engaged--suspect much shorter FL with that switch set.  
People describe hearing lens elements moving around.  It seems the 1:1 setting  
on the 60 mm must be true
1:1 mag and not FF equivalent, i.e image produced is really at 1:2.  The 
nomenclature is confusing and Oly didn't make it any better by often citing the 
FF equivalent magnification but the image is a crop. 

Not too close, Mike
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