Quote Originally Posted by craigclu View Post
I believe that the meter is simply reading the light as determined by whatever stop you're turning the uncoupled lens down to.
Yes the TC is giving me a reading with M42 adapter and screw lens, but it is wrong compared to a Hexanon lens used and compared with a separate light meter.
Anyway if a question ever arises on forums about the Konica TC and M42 lenses I'll say:- "you can't use the TC built in meter", unless someone proves me wrong.

Thanks all