Originally Posted by gandolfi
No mercuric oxide batteries are made any longer, worldwide!
It is possible to get Wein air cells, which output 1.35v constant voltage, but which starts to expire -- even without use -- once the air seal is broken (like all hearing aid batteries). Another alternative is to get the MR-9 adapter http://www.criscam.com/mercury_battery_adapters.php which permits you to insert a silver oxide cell and which drops voltage to constant 1.35v.
I have four Topcon Super D (RE Super) bodies and a D-1 (RE-2), and tested them all for function within the past couple of months by running B&W film thru them, and the shutter speeds are accurate on all of them (although the meter is not accurate on two Super D or the D-1).
Last edited by wiltw; 12-29-2012 at 02:49 PM. Click to view previous post history.