On Sep 25, 2005, at 6:22 PM, William Robb wrote:
Nothing is certain, but I suspect this is wishful thinking. Full-
frame doesn't offer wider angles; it's just that there aren't many
very wide lenses in APS format yet.
I've been told that the farther the rear nodal point is from the
lens, the harder it is to design a good lens.
If this is the case, there aren't going to be very many wide angles
for the APS format, if they stay with the present flange to focal
plane distance of 40 or so millimeters (I don't know the exact
number offhand).
What I'm unsure of is how much wider than a 14mm, or a 12mm in the
case of the 12-24mm zoom, you need. I had a 15mm that I used with the
Leica M once upon a time, and I found it to be not as pleasing a lens
to use as a 21mm. Wider than 100 degrees across the diagonal is, to
me anyway, truly a specialist domain.
Godfrey
