The XA4 has very high sharpness but more light fall off than the original
XA. Since the XA-4 has a 28mm lens, it is much better to be used as a zone
focusing camera, I can't imagine using zone focusing with a 40mm F2.8.
C.H.Ling
----- Original Message -----
From: "Piers Hemy" <piers@xxxxxxxx>
I think you have answered your won question Dan. Re the Rollei, you ask
about viewfinder focus aids - on the XA series, only the XA has the
rangefinder, as far as I recall. The others rely on zone-focus systems, so
you don't get any aids in the viewfinder - except that the XA1 is fixed
focus (so you don't need any aid), and the XA4 has a measure built into the
strap for macro focus!
I take it you know of the XA FAQ
http://brashear.phys.appstate.edu/lhawkins/photo/xa.faq.html which gives a
reference to suggest that the XA4 optical quality is better than the XA -
but I strongly suspect that a properly focussed image from the XA would have
much going for it in the comparison with a zone-focussed XA4 image!
Piers
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