Equipment - Medium Format

Widepan cameras any good?

I saw this on UK ebay
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=710&item=3869225296&rd=1

It looks good. I am after a medium format swing lens camera but it must
be focussed to infinity and not 30 feet like the standard medium format
Noblex. Also I do not trust the focussing aspect of swing lens cameras
as the secondary principle point of the lens must stay exactly on the
axis, otherwise horizontal sharpness is lost. It would have to be a
well-designed focussing system to achieve this. Is there a detailed
review of this camera on the Internet somewhere?
 
 

See Also : Re: The Widepan *can* do night photography

"months" was an exaggeration. It was just a case of finding the time.
I've done the maths now. I wanted to calculate what would happen to the
horizontal resolution at the three marked distances and also if set to
infinity if the whole lens was being shifted laterally moving the
secondary principal point off the axis. Then I take the photos and
compare actual results with calculated results.

The lens does indeed move laterally and is not front-cell focussing. If
the whole lens is moved without internal adjustment and the secondary
principal point is moving off the axis then this will be the result for
maximum horizontal resolution, assuming the secondary principal point
for the marked mid-point is exactly on the axis.

near (13') = 7 lp/mm
mid (20') = max lp/mm
far (26') = 16 lp/mm
inf = 3.7 lp/mm