looking for camera repair

[JohnMWright]

I want to use my 20D on an old Minolta bellows system. My idea is

simple enough: I plan to use an extension tube with a Minolta MD/MC

mount on the front (side facing lens/bellows) and a Canon EOS mount

on the back (of course to attache to the 20D), which leaves the

bellows totally intact, plus gives the clearance I'll need between

the body and bellows. I thought I'd buy something like a cheap Kenko

25mm EOS tube and put the Minolta mount on the front of it.

 

Obviously, I'll have to use stopped-down metering and focus manually,

but can anyone think of any other problems that may arise?

 

Can anyone recommend someone who can do this work?

[mark u]

I don't think it's the right approach to add another 28/29mm of extension when you already have bellows and a cropped sensor. Instead, I'd look at a reverse T mount adaptor for the rear of the bellows, and a T mount to EOS adaptor to attach to that. Well crafted adaptors for EOS avoid tripping the tiny lever that tells the camera a lens is present. You should read the following:

 

http://photonotes.org/articles/eos-manual-lenses/

 

and the links on adaptors at the foot of that article, in particular:

 

http://medfmt.8k.com/bronmounts.html

 

http://www.a1.nl/phomepag/markerink/mounts.htm

[mark u]

You might also want to look at this firm:

 

http://www.srbfilm.co.uk/index1.html

[JohnMWright]

Mark, thanks for the links. The T-mount idea sounds good. I'll have to make sure I have clearance, but it should be easier than what I had planned.