54mm lens giving 1:1 at 22cm doesn't sound right... 50mm zuiko on an OM
gives 1/2x at 24cm. No cheating and doubling lens focal length just
because the sensor is smaller.
It would seem like 1:1 applied to a digital image might not have the
same importance of 1:1 applied to 35mm. If every sensor is a different
size, every final image will take a different amount of magnification to
get to the same final size.
-jeff
----- Original Message -----
From: "Daniel Mitchell" <danmitchell@xxxxxxxx>
>
> 14-54 (28-108) => 22cm = near enough 1:1 (!)
> 50-200 (100-400) => 1.2m = 1:2
> 50 macro goes to 1:1 out-of-box, 2:1 with ext.tube
> 300 (600) => 2m = 1:2.2
>
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