I used a Pentax K2 to try and take star trails. The silver oxide batteries allowed me just 30 minutes before shutting off. Next time I go to the southern Oregon desert and try star trails again, I'm using a mechanical Spotmatic. Don't know how AAs would work out with the 645.
Jim A. > Hi all, > > I'm going to try some longer exposures, maybe star trails, etc. > > So far i know about possibility to run out of batteries. > It is bad. But how about switching off camera after release cable is > fixed? > > Anybody tried it? > > Better idea would be to use fixed lens camera, like Yashica or similar, > with mechanical shutter. But lens diameter matters... And flare issues, > etc... > > Gatis > >
