EOS body/lens mount adapters

[BAS1]

Is there an adapter that will allow mounting my Minolta 100 macro AF lens to my Canon EOS 1dMKII body? I have checked B&H and become very confused at the various adapters available.

Bev

[chris maddock]

I don't think you're going to be in luck. To quote from the catalogue of SRB Film, an adapters specialist here in the UK;

"CANON EOS and MINOLTA AF LENSES ON OTHER BODIES
This is not viable as neither lens type has an aperture ring"

If SRB don't make an adapter (and they also make unusual combinations to order as well as stocking common ones, so they will know what can be done) I doubt that any one will.

KRs
Chris

[BAS1]

Chris, thank you for your response.

I guess I should look at purchasing a macro for my 1DMKII. I have four Canon L lenses and the Canon 28-135. I think this time I will take a serious look at the Tamron 180 F3.5 macro for a lot less money than the Canon counterpart.

Again, thank you.

Bev

[ron chappel]

On this subject -and this is for interests sake only...

I have investigated making a minolta AF-EOS adapter but there are two issues that make it very tricky.

Firstly the minolta lens register distance is only half a mm longer than the eos so the adapter will be pretty thin .This is not as bad as it first sounds because that half mm distance is mostly for spacing and doesn't need to contribute alot to the overall strength of the mount.It would need to be manufactured pretty accurately though

The other problem is how to control the aperture lever. Minolta AF has a mechanical aperture lever and no aperture control ring on the lens.
Some kind of notch adjustment could be made inside the mount but the lens would have to be removed to set the aperture :?
This control could be transfered to the outside through the mount but there is only half a mm to fit it through :shock:


An interesting challenge that i intend to try one day when i have my own lathe :)

[chris maddock]

You sound as bad as me, Ron.

I'm working on a tilt/shift lens at the moment - a lens from an old folding 6x9 camera and a bellows from an old enlarger. It has to be a medium format lens to get enough lens/film-plane distance for the bellows, so I may not be able to get the shift part as it would have to be a seriously wide-angle lens to overcome the crop factor and be of any use.
However the tilt part is working fine, just got to make the structure now.
When it's done it'll have a combined age of over 100 years, the lens is a 1931 Schneider ;-)

KRs
Chris

[ron chappel]

Hey nice project! :wink:

I'm not sure (hey it's nearly 3:00 am... :shock: lol) but i think the bit about needing a wide lens to have much shift potential is not nessesary
The image circle is HUGE with that lens so there should be a lots of room to shift/tilt/swivel/or do a jig if you want :lol: :lol:
But don't quote me.I'm no expert at that by any means :oops:

[chris maddock]

Yes, Ron, the image circle is huge - but even a "standard" length lens for 6x9 is in the region of 100mm (mine is 105mm). It's not so much the shift as the resultant field of view. By the time you've taken a crop the size of a 10D sensor out of the middle that ain't very wide at all.

The shift principle is easy enough to do but I can't think of many subjects that would benefit from it. Normally a shift is used for correcting keystone perspective distortion in buildings, but you need to be quite close to them to have the problem in the first place. With a lens in excess of 100mm, that ain't going to be very often ;-)

The tilt principle works quite well - my intention is for increased DOF in macro, and the long lens on a bellows is great for that

KRs
Chris