Astrophotography, E01error

[mkates]

Last evening I attempted to shoot Mars with my D60. I set the camera to manual, bulb setting with remote, using a generic Eos T adapter and camera adapter at prime focus with a 10" Schmidt Cassegrain. I kept getting an Eo1 (lense contact dirty) message. Any suggestions?

Martin Kates

[helmus]

Hi Martin,

make shure that the D60 to lens contacts not touch the T2 adapter. Glue a little plastic plate on the T2 or buy a really EOS-T2 adapter.
I think that you really have a Canon-T2 for the older manual focus bodys.
Mine EOS-T2 adaptere works well. It's from HAMA here in Germany.

Best Regards
Helmut

[chris maddock]

One other possibility - there are two means by which the camera determines that a lens is fitted. One is the obvious EF contacts along the bottom of the lens mount, the other is a much less obvious microswitch behind the front layer of the mount itself, located just above 9 o'clock looking from the front of the camera.

If this switch is tripped, the camera knows a lens is fitted and tries to communicate with it. A T-mount will, of course, not reply so the camera assumes an error and report s it as a lens communication error - possibly the same error as you are getting.

The point is that some T-mounts don't take this into account and the relevant part of the bayonet is long enough to trip that microswitch. The solution, if this is the case, is to take a file to the T-mount and shorten that lug of the bayonet fitting - about 1/8" should be sufficient.

HTH
Chris