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Minolta lens to Canon EOS adapter

Chris Townsend , May 22, 2006; 03:57 p.m.

I ran some searches on this subject but I'm unclear on the answer and just wanted to get some clarification... I have a 30D and have several Minolta lenses from my older system that I would like to shoot with. Is there an adapter out there that will allow Minolta lenses to mount onto the 30D? If there is one, can you point me to where I could purchase one? Thanks.

Responses


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Denis Bergeron , May 22, 2006; 04:11 p.m.

What kind of Minolta lens ? old manual focus or new Dynax system ? For the old one you have to forget that, the focus plane of the minolta are shorter than the EOS system, you will never be able to have focus at infinity. For the new AF system, I don't know !

Chris Townsend , May 22, 2006; 04:15 p.m.

3-4 years old. Bought when I bought a maxxum 7 when I first started shooting. Just figured I try to see if I could get some benefit out of them before just trying to sell them. thx.

Andrew Robertson , May 22, 2006; 04:21 p.m.

No, sorry. Maxxum lenses and EOS lenses are mutually incompatible. With a 44mm register on the EOS and a 44.50mm register on the Minolta, there probably isn't room for a converter either. Maybe with advanced materials you could design a purely electronic whin ring mount converter for a couple hundred thousand bucks. Because most Minolta lenses have their AF drive in the body, it would be manual focus only as well unless you could somehow put a lens drive motor in the converter that was less than 1/2mm thick.

Bob Atkins , May 22, 2006; 05:11 p.m.

I think the Minolta "flange to focal plane" distance is 43.5mm, so an optics free adapter that focuses to infinity is impossible.

See http://www.bobatkins.com/photography/eosfaq/manual_focus_EOS.html

As far as I know, none exist, not even "macro" adapters or adapters with optics.

Tommy Lee , May 22, 2006; 10:54 p.m.

There is no Minolta AF to EOS adapter. However, I have seen 3 versions of the Minolta MD (Manual Focus) to EOS adapters in the past. All of them are rare. One Version is a Reverse T-Mount MD (accept MD lens and has a male T-mount). Another version is a MD mount (lens) to M42 (body) adapter. Both of these adapters add 8 to 10mm to the optical path so it is made for macro only.

The 3rd version is extremly rare. It is a mechanical mount which adds to an MD mount to form a EOS bayonet. It retains the Rokkor lens' 43.5mm flange to film distant. It can't focus to infinity but a 50mm lens will retain useable working distant.

Ron Chappel , May 23, 2006; 09:24 a.m.

In theory an adapter for using maxxum lenses on EOS is perhaps possible (without using image degrading optical elements) but nobody makes one. The problem is not so much the 0.5mm thickness the adapter would have to be , but the difficulty of the lens tabs being very close to the size of the EOS mount's minimum diameter.I did measure it once but can't remember the exact thicknesses required.
The half a mm thickness of the main outer part is not much of an issue because this part is simply a spacer anyway.Being thin here is no real problem.

If a maxxum to EOS adapter is indeed possible it would cost about $50 to make,not the hundreds of thousands someone said....

If you still want to use maxxum lenses on EOS you can easily do it by simply holding it against the body,i've done this many times.
Of course you'll need a third hand to focus... :)

Larry H. - Atlanta, GA , May 23, 2006; 10:25 a.m.

>>>>Tommy Lee , may 22, 2006; 10:54 p.m.

There is no Minolta AF to EOS adapter. However, I have seen 3 versions of the Minolta MD (Manual Focus) to EOS adapters in the past. All of them are rare. One Version is a Reverse T-Mount MD (accept MD lens and has a male T-mount). Another version is a MD mount (lens) to M42 (body) adapter. Both of these adapters add 8 to 10mm to the optical path so it is made for macro only. The 3rd version is extremly rare. It is a mechanical mount which adds to an MD mount to form a EOS bayonet. It retains the Rokkor lens' 43.5mm flange to film distant. It can't focus to infinity but a 50mm lens will retain useable working distant.<<<<

Tommy has given you the definitive answers here. I have the reverse T-mount adapter (usable only for macro lenses), which I no longer use because I bought an M42 Vivitar Series 1 90mm/2.5 Macro lens that I use with my EOS system (great combo!). If you are interested in the reverse T-mount adapter, let me know. They are very rare. I will want to keep the EOS T-ring, though, for my telescope. They are easily available.

Also, there has been some discussion recently on the Yahoo Groups Minolta Manual Focus or Manual Minolta Free forums (I think the latter). Someone was talking about a 0.0 mm adapter (I don't see how that is possible) and a 0.5mm adapter. Neither of these will allow focusing to infinity, but they will definitely allow focusing close to that. I could see using it with my Rokkor 35mm/1.8 and/or Viv S1 28mm/1.9 lens as a normal lens, my 58mm/1.2 as an awsome protrait lens, or with something like the Rokkor RF 800mm/8 reflex lens as a sharp, long telephoto. It will be particularly good with the f/1.2 lens because of the bokeh from that lens.

Unfortunately, I cannot give you a URL for those forums because my work computer will not let me on to yahoo. (It probably shouldn't allow me onto photo.net either ;-)

Larry H. - Atlanta, GA , May 23, 2006; 10:48 a.m.

If my calculations are correct (and they should be), a 1.0 mm extension will result in max focusing distances on the following lenses:

28mm 0.812m

35mm 1.260m

58mm 3.422m

800mm 640.8m

So maybe the 28 & 35 won't be useful. But a 92.8mm f/1.2 equivalent lens that focuses up to 3.4 m (11.2 feet) will make a dynamite portrait lens.

Aurelio Stoppini , Jun 07, 2006; 03:30 a.m.

Hello friends,

I am also very interested to such topic

I have got a Canon EOS 20D and would like to mount on it my Minolta MD 50mm MACRO lens, only for macro purposes, don't care to focus at infinity but only to close subjects, such lens is VERY good for macros

Where can I buy one of the adapters described by Tommy and others?

Thanks in advance,

Aurelio


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