How do I get my EOS M to release the shutter with an adapted manual lens?

Question

I have a Canon FD-mount lens and a Nikon pre-AI lens, with respective adapters.

I attach the FD lens to my EOS M, set the camera to M or Av mode, and the aperture is fixed at 00. When I press the shutter button, it doesn't fire.

How do I use these vintage lens on an EOS M?

Weiyan · Accepted Answer · 2013-05-27 12:32:12Z

17

In Custom function menu: C.Fn-7 Release shutter without lense: on

The shutter can release.

It can shoot in either mode, including P, AV, TV, M. In TV mode, set ISO to auto. ISO becomes a variable according to time and aperture you set.

answered May 27, 2013 at 12:32

Weiyan

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\$\begingroup\$ This was very helpful. One side note. You must have not NOT set on green "a" setting (at shutter button) otherwise you wont see "custom settings (c.fn) - \$\endgroup\$
– user36847
Commented Jan 7, 2015 at 20:36
\$\begingroup\$ Thanks guys! Have a boatload of old fd series lenses which work very well on this camera. \$\endgroup\$
– Richard Reddy
Commented Feb 13, 2017 at 23:29

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