Canon EF to FD body adapter?

<p>Hi there, I know this will sound strange but I need to use a Canon EF lens on a Canon FD mount. Note I am not asking about a FD lens to EF body adapter. So does this exist or do I need to make it myself?</p>

<p>Thanks,<br>

Dan</p>

<p>Wow. Just curious, why?</p>

<p>According to Bob Atkins (our own at <a href="http://www.bobatkins.com/photography/eosfaq/manual_focus_EOS.html">link</a> ) EOS is 44mm from lens flange to image plane, while FD and all are only 42mm. So I guess theoretically an adapter could be possible, but almost all EF lenses are autofocus and most have no aperture ring. Maybe the TS-E lenses could be used?</p>

<p>I've never specifically looked, but I've never come across any in searches for "EF +FD" or the like.</p>

<p>I believe the EF mount is larger in diameter then the opening in the FD mount. Which means the EF mount would have to be well out in front of the FD opening in the body.<br>

And like stated above I have never seen an adapter for this combination.<br>

WHY would you need to do this? You would only be able to shoot with the EF lens wide open as you would have no control over the diaphram.</p>

<p>I think you can close the diaphragma on the EF body with the DOF preview button and then unmounting the lens.<br>

I have read this is used to close aperture when a EF lens is going to be used reversed for macro.</p>

<p> </p>

<p>Jorge once you removed the lens from the body would this still hold the lens diaphram closed down? Which would mean it would have to be a dual single ON ON to move the diaphram. both ways.</p>

<p>Mark, yes, it holds the lens diaphram closed down<br>

Just tested on a 20D. I dial AV mode and I dial F16, then I press the DOF preview button, the iris close down, then with my finger still on the DOF preview button I press the unlock button (with other finger of course) and remove the lens. The diaphram is closed down. Sorry for my bad english.</p>

 

<p>OK Jorge and how is this complicated mess of a way to take a photo involving two bodies an adapter that has to be added to and removed from a lens that you have to focus not move the focus unmount the lens from the manual body and adapter then mount it to the EF mont body stop it down remove it return the adapter to the lens and then mount it to the FD body then recompose with the lens stopped down and take the photo.</p>

<p>Unless your thing is a bowl of fruit artifically lit I could take a photo easier with a pin hole camera.</p>

<p>Mark, am not the initial poster, I neither agree nor disagree about the uselfullness of using EF lenses on FD bodies..<br>

I only informed about a "feature" of the EF lenses.</p>