Oh! my E-10 must be wrong! the 36mm lens (should be even shorter at close
distance) has much longer working distance than my Zuiko 50/3.5 with the
same image coverage!
C.H.Ling
----- Original Message -----
From: "Ralf Loi" <ralf_loi@xxxxxxxxxx>
>
>
> I can't agree. FOV is for "normal" subject (landscapes, etc) not for
macro.
> If you think in terms of reproduction ratio, it is another story. The
> 50/3.5 macro does 1:2 at 23 cm (if I remember corretly), it means that an
> object at that distance will be reproduced at half the size on the focal
> plane - no matter what size is the sensor/film! For the 90/2 the same
> happens at 40 cm - again, the size of sensor/films doesn't matter. These
> distances are not the working distance, but are related to.
> I suspect the 50mm macro for the 4/3 system will work the same as "our" 50
> macro, so working distance in the field can be difficult.
>
> Ralf Loi
>
> chling@xxxxxxxxxxxxx wrote
>
> Depends on how you interprete it, since the FOV of 100mm lens in 35mm
> system
> is equal to 50mm lens in 4/3 system. That means for the same object you
> will need the same working distance for both. If you are satisfy with
> working distance of 100mm macro lens in 35mm system it will be the same
for
> 50mm lens in 4/3 system, that is simple math.
>
> C.H.Ling
>
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