FD 135/2.5 Conversion

Remove the old mount. To do this, press the lock of the mount with the tip of the screwdriver (picture 1).

dav
Picture 1

Turn the ring until all 3 screws are visible. Remove the 3 screws (Picture 2).

Picture 2
Picture 2

Step2: Remove the rear element. For this you need a lens removal tool. If you don’t have a lens removal tool, you can use a caliper tool. The rear element has two notches to fit the tool (picture 3a and 3b). Put the tips of the caliper in the notches and turn counter clockwise while pressing down. Keep turning counter clockwise until the rear element is loose. Remove the element and put aside.

Picture 3a
Picture 3a
Picture 3b
Picture 3b

Step 3: pull the old mount out. If it feels like it is a little stuck, rock it back and forth gently.

Step 4: Put the rear element back in place.

Step 5: Remove the aperture lever and save the 2 screws as they are reused (picture 4).

picture 4
picture 4

Step 6: Remove the pin (picture 5).

picture 5
picture 5

Step 7: assemble the new aperture control (EdLink and EdBushing) as shown in picture 6.

picture 6
picture 6

Step 8: Slide the EdLink into the aperture control (picture 7) and fasten the new aperture control with the screws from step 5 (picture 8).

picture 7
picture 7
picture 8
picture 8

Step 9: Put the new EdMount on and fasten it with the new screws. (picture 9).

picture 9
picture 9

Step 10: Enjoy your EdMika’d Canon FD lens on your EOS camera.

picture 10
picture 10

10 thoughts on “FD 135/2.5 Conversion”

  1. do I need an adapter to mount my old AE1 telephoto lens to the new cannon rebel EOS t5
    if so which one do I order

    Thanks for your time

  2. Ed, do you know if this conversion kit “Canon FD 135mm 2.5 SC” would work on a Vivitar 135mm 2.8 lens? or is the aperture arm incorrect for that lens?? thank you for your insight.

  3. I received a kit for a 400mm f4.5 FD lens. I never installed it and am wondering if the same kit will work on other lenses I have such as:
    85mm f1.2L FD
    24mm f2 FD
    135mm f2 FD

    Thank you

    1. The mount would fit the 24/2 if it is the twist ring FD mount rather than bayonet new FD mount and the 135/2 only comes in new FD mount. If the 400/4.5 kit you have is new FD mount rather than FD then the mount would fit all the lenses you list. You would need extra components to make all 3 work though. I could send you the extra parts for 10 US dollars to cover my shipping and handling if you choose to do this.-Ed

  4. I bought an Opteka 500mm Mirror Lens for my canon EOS T6 and decided to increase the magnification by ordering a 2 x teleconverter. The teleconverter was FD so I then ordered an FD – EOS attachment. The attachment worked fine but the other end of the teleconverter (the end facing away from the camera) is still for some kind of FD connection, but, I assume, now of the female variety. Where do I order an attachment for the end of the teleconverter facing outwards so that I can connect it to the mirror lens?
    I hope that made sense and that somebody understands the problem.

    1. IF your Opteka 500mm mirror lens was already EF mount then you should have purchased an EF 2x extender rather than an FD 2x extender. The people who buy conversions for FD extenders only use them for FD lenses that they then want to connect to EF bodies. It converts the 1.4x-a extender into essentially the same optical quality as a 1000 dollar original 1.26x FD to EF converted Canon once manufactured and sold when they launched the EF system. Even if I did develop an adapter for the FD lens side of your FD 2x extender it wouldn’t work because the length of it would be too far off from the optical design.

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