15 apr 2007 kl. 04.25 skrev Tim Corio:
Is it reasonable to use a lens designed for a medium or large format
camera on a 35mm camera with a bellows? I sometimes notice lenses
priced low on eBay that I think might be fun to try on my 35mm.
I'm thinking since the lens is intended to cast its image over a
larger
area, My 35mm camera would only be using the central portion which is
usually the highest quality part of the image. This could be an
excelent way to get a good quality macro lens for higher
magnifications
(4x to 10x).
Is there a standard for the lens mounts? How about adapters to
either a
Canon FD body or a t-mount?
Get a decent enlarging lens, preferrably in the 100 - 135 mm range;
80 mm is OK and 50 mm will give you great magnification on a
bellows. A 135 mm could probably be focussed from infinity on most
bellows, possibly also a 100. 50 and 80 won´t.
Enlarging lenses can be had for a song nowadays, when lots of people
dismantle their wet darkrooms. Good ones (EL-Nikkors, Componons, Apo-
Rodagons) have extremely flat field and are well corrected for rather
close focus. No auto diapragm either; when working slowly and
deliberately with bellows and good camera support, auto stopdown is
more of a nuisance than an asset. Most enlarging lenses have Leica
thread mount, so it isn´t too hard to adapt them to almost any lens
mount.
For the higher magnifications you mention, I´d say a 50 mm mounted in
reverse would be best suited. Given the prices of used enlarging
lenses, you can afford a couple of different focal lenghts.
Per Öfverbeck
http://ofverbeck.se
"In a world without walls or fences, who needs Windows or Gates?"
