Recently Flavio Minelli wrote:
>
> Bojidar Dimitrov wrote:
> > Second, FREE and IF lenses do not have constant focal lengths. My A100/2.8
> > Macro has a focal length of something like 73 mm at 1:1. So 100 mm
> > extension will result in higher magnification than expected.
>
> I knew this, BTW, do you know how it works out with the FA 100?
>From CRUDE experiments it seems that the A 100/2.8 Macro has a focal length
of 61 mm at 1:1 and F/FA 100/2.8 Macro has a focal lenght of 73 mm at 1:1.
But I need to do the experiments again.
Cheers,
Boz
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