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This section will explain the procedures to install the EOS-MD flange on the CANON DSLR models. Since the internal geometry of DSLR CANON bodies (mirabox in particular) is different from model to model it is possible to identify two different types of installations that ultimately "cover" all CANON DSLR bodies (APS-C) for which this special flange is compatible.

The first option (which refers to the type 1 installation) does not require any changes to the CANON DSLR bodies (then we replaces only the flange), but requires, however, a small change on the (ALL) Minolta MC/MD lens: in brief it is necessary to shave 0.5mm from the aperture pin on ALL Minolta MC/MD lens that we will want to use with this flange.

Conversely, the second option (which refers to the type 2 installation) does not require any changes to the Minolta MC/MD but requires, however, a small change on the CANON EOS DSLR bodies: in brief it is necessary to remove the plastic support of the electrical contacts (operation for which some skills are required).

Finally, the Canon EOS 300D, for which applies the type 1 installation, is the only CANON EOS DSLR which does not required changes, neither for the Minolta MC/MD lens and nor in the DSLR CANON.

 

CANON EOS DSLR bodies
Sensor Type
Installation reccomended
Fully compatible with EOS-MD flange ?
Modifications on the Minolta MC/MD lens ?
Modifications on the CANON DSLR body ?
300D
APS-C
type 1
YES
No need
No need
350D, 400D, 450D, 1000D, 20D, 30D, 40D, 50D, 7D
APS-C
type 1
YES
Shave about 0.5mm off the aperture pin the lens aperture pin
No need
350D, 400D, 450D, 1000D, 20D, 30D, 40D, 50D, 7D
APS-C
type 2
YES
No need
Need to remove the Plastic Support Electrical Contacts
10D
APS-C
Not Recommended
Not Compatible
NO WAY
NO WAY

 

5D

MK I, MK II
FULL FRAME
NO, because of the lens will interferes the camera mirror
Not Compatible
NO WAY
NO WAY

1D

MK I, MK II
APS-H
NO, because of the lens will interferes the camera mirror
Not Compatible
NO WAY
NO WAY

 

The type 1 installation

(suited for EOS 300D, 350D, 400D, 450D, 1000D, 20D, 30D, 40D, 50D, 7D)

The first step is to remove the original CANON EF flange (on the left). Unscrew the 4 screws and remove the locking pin for the lens (on the right). Then remove the two thin rings below the CANON EF flange (note that some CANON DSLR have a single thin ring).

 

Dismount the original CANON EOS focus screen and install the acute matte with microprism focus screen. The istructions to change the focus screen are available at this external site. Obviously this is not a mandatory operation but a better way to obtain accurate focus operations (this is true expecially if we use lens at large aperture or wide open settings).

 

This is the view that occurs once we disassembled the original CANON EF flange.

Now we have to isolate the CANON EOS's electrical contacts (this operation is mandatory !) using the plastic protection provided with the KIT. Dismount the two screws that block the support where are placed the electrical contact on EOS body, but without extract it !

 

Put first the two screws "on" the plastic protection (provided with the KIT). The shape of the plastic protection is shown in next figure.

 

Then put the plastic protection "on" the electrical contacts. The two screws will block again the supports on the EOS body.

Note: If your EOS body has other electrical contacts (see the red circle) below the flange, you have to isolate them. Note that this is not a mandatory operation but only a further precaution.

 


Mount the EOS-MD flange like showed in the next figure. The red point is the same reference to mount properly the Minolta MC/MD lens on ALL Minolta film camera.

 

This is the view that occurs once the EOS-MD flange and the acute matte/microprism focus prism was successfully installed.

 

... and this is the final result !

The Minolta MD 24mm f2.8 on a CANON EOS 300D

 

The type 2 installation on the 20D

(suited for EOS 350D, 400D, 450D, 1000D, 20D, 30D, 40D, 50D, 7D)

 

The first step is to remove the original CANON EF flange. Unscrew the 4 screws and remove the locking pin for the lens. Then remove the thin ring below the CANON EF flange.

 

This is the view that occurs once disassembled the original CANON EF flange.

 


Remove the plastic of the electrical contacts support. This is necessary to avoid any type of collision between the aperture pin of the Minolta MC/MD lens and the base of mirabox inside the Canon EOS DSLR. Obviously it is possible to avoid this operation but a change on ALL Minolta MC/MD lens is necessary (0.5 mm must be shaved on the aperture pin of Minolta MC/MD lens). In order to remove the plastic of the electrical contacts support it is necessary to dismount the botton of the camera.
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Install the acute matte with microprism focus screen on place of the original CANON focus screen.

 

Isolate the contact in the lower left as showed. This is not mandatory but recommended.

 

Mounting the plastic cover in place of plastic support of the electrical contacts taking care to leave space for the leverage of aperture pin. The shape of this support is shown in next figure.

 


Mount the plastic cover as showed on next Figure (Note that it replaces the support of the electrical contacts). It is important to note that the area that remains "open" is not such as to leave enter dusts on the digital sensor's surface because it is located in a room "closed" in respect to this "open area ".

 


Mount the EOS-MD flange respecting the references (the red point) as shown in the next figure. The red point is the same reference to mount properly the Minolta MC/MD lens on ALL Minolta film camera.

 

It is possible to check directly with our eyes the situation that occurs within the Canon DSLR once mounted a Minolta MC/MD lens using a Minolta extension tube on the EOS-MD flange. As you can see there is no interferences between the aperture pin of the Minolta lens and any parts inside the Canon DSLR !

 

... and this is the final result...

The Minolta MC W. Rokkor 28mm f2 on a CANON EOS 20D

 

The type 2 installation on the 450D

The first step is to remove the original CANON EF flange. Unscrew the 4 screws and remove the locking pin for the lens.

In order to perform a reversible installation we need to remove the tiny ring below the EF flange (showed by the next figure). We will remove this thin ring (just below the CANON EF flange) from the botton of the 450D.

 

Again, in order to perform a reversible installation we need to disconnect the electrical contact plastic support and some flat cables like showed by the next figure.

This operation does not require to unsolder wires.

 

This is the view that occurs once disassembled the original CANON EF flange on the 450D and the plastic support of the electrical contacts.

 

Mount the plastic cover as showed on next Figure (Note that it replaces the support of the electrical contacts). It is important to note that the area that remains "open" is not such as to leave enter dusts on the digital sensor's surface because it is located in a room "closed" in respect to this "open area ".

 

Mount the EOS-MD flange respecting the references (the red point) as shown in the next figure. The red point is the same reference to mount properly the Minolta MC/MD lens on ALL Minolta film camera.

 

... and this is the final result...

 

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