that should read "... but not with the LX..."
P. J. Alling wrote:
The likely reason for the longer mirror, aside from annoying people
who want to use adapted lenses, is to insure that there won't be light
fall off at the top of the finder when you're using longer lenses. If
anyone is interested and has the cameras, they can see the effect
clearly with a 600mm lens on the MX but the LX which has a longer
mirror. It used to be a big deal, I'm surprised that Canon doesn't
make point of mentioning it in their literature.
Bob Shell wrote:
On Tuesday, October 25, 2005, at 10:57 AM, Andre Langevin wrote:
Screw adapters are about 20-25$ each. One per lens would be better.
You get stop down metering and, I guess, aperture priority automatic
exposure. K mount lenses can also be adapted but it's another story
as it asks for more expensive adapters and a lens modification to
remove an extruding lever.
For unknown reasons the mirror on the 5D is longer front to back than
the mirrors on all other EOS cameras, both digital and film. It is
just enough longer to whack into the rear element on some adapted
lenses. I don't know about Pentax K mount lenses because I haven't
tested them, but this problem exists on a few Carl Zeiss lenses in
Yashica/Contax mount and on a number of Leica R lenses. I would
assume that the problem might also exist for some Pentax K lenses and
even possibly for some M42 screw mount lenses. It is mostly a
problem with wide angle lenses with protruding rear elements.
It can be fixed by grinding off part of the 5D mirror with a Dremel
tool! Seriously, there are guys who have done this so they could use
certain lenses.
I can't figure out why Canon would need to make the 5D mirror longer
than the one on the EOS-1Dv, but they did. Maybe it was to keep lens
hackers like me from putting non-Canon glass on the bugger.
Bob
--
When you're worried or in doubt,
Run in circles, (scream and shout).
