sigma announcement is dated late 2007, but the first
pieces are coming in Italy at beginning 2008.
The lens itself aims to be a 3rd party addiction to the
nyche of fullframe fisheyes for APSC digital cameras. Not
a so much populated place, indeed, if you think the others
are the 10.5mm
Nikkor f2.8 and the Tokina
ATX-pro fisheye zoom 10-17 f3.5/4.5, that is marketed
also as Pentax and Schneider.
Well, Tokina is a fisheye zoom, and makes cathegory
on itself, let's say its quality, flare resistance and
sharpness are so god that can revail with Nikon
The Nikon lens is widely used among Nikon and Canon users,
who need a special adapter and a piece of plastic to
jam the iris mechanism in the desired position.
ask ourself who and how will use this lens.
Fullframe fisheyes are used by creative photographers and
sport photographers mainly, since the advent of digitally
remappig projection, also wide angle enthusiasts and panoramists
became interested in, and I'd say they are
the most emanding and the most technically skilled ones.
In the first case they are forgiving everything about
real field of view, chromatic aberrations and resolution,
and they say "OK, a fisheye is distorting itself and
geomtrical aberration are not in count".
photographers really CARE. A fisheye is following its own
geometrical projection rules, we call distortion something
that is going against that rule. We are picky also with
chromatic aberrations not following radial or linear rules,
as flares, and we WANT to know how many degrees a fisheye
can spot. Even more with APSC fullframe fisheyes, cause
we like to modify them, shave
them ad use them on fullframe,
24x36mm sensor-sized reflex cameras, to shoot spherical
panoramas with a small number of shots.