The way I understand it Brian, 1:2 is half life size on the film, 1:4 is a
quarter life size. That is the way a Tamron macro lens is marked, for sure
(it happens to be on the desk, the Zuiko is not readily accessible, I
shamefacedly confess).
Whether that is the convention adopted by the tester may be moot!
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Brian Swale
Sent: 23 January 2004 10:44
To: olympus@xxxxxxxxxx
Subject: [OM] ( OM ) macro lens question
Hi folks,
Can somebody please answer this (probably stupid) question from me?
When a lens test for macro refers to 1:2 and 1:4,
which of these yields the greatest subject magnification on film?.
I ask this because a lens test I was reading said the lens at closest focus
1:2 was 36 inches from the subject; yet they tested it at 1:4 as well.
Brian
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