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
----- Original Message -----
From: "Moose" <olymoose@xxxxxxxxxxxxx>
> Jan, you are saying Repro ratio when you are talking about FOV. The
> example is a clear one, but don't you have your example backwards? A
> 100mm lens on 35mm covers roughly the same FOV as a 50mm on a 4/3
> sensor. It's the same as the way the 'standard' fl for 6x7 cm is about
> twice that for 35mm. It seems to me that Skip is right, that will be a
> problem for macro work in the field.
>
> Moose
>
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