Question. Minolta XD-11 or Minolta FM2N.

[Chan Tran]

The proper way to test long exposure is to walk it up in exposure time with a controlled light. I just retested my F3 by first setting up metered exposures of 1 . . 2 . . 4 . . 8 seconds as closely indicated by the meter as the actual time may vary slightly. Of course it doesn't show anything above 8 but it will take longer and longer exposures as you close the aperture down. I was able to make reliable/repeatable multi-minutes long exposures.
Of course what is more important then long exposure times is repeatable long exposure time.

Oh my F3 is perfect but I just want to know if other F3 would do longer than 8 secs exposure when there is no light and how long would it?

 

[Les Sarile]

Oh my F3 is perfect but I just want to know if other F3 would do longer than 8 secs exposure when there is no light and how long would it?

Doing the test I outlined, I managed to get over a minute.