interesting cold weather issues today, there was hot air ballons taking off from a frozen lake i wanted to shoots brought my new em1m11 and 12-100f4 and the sony a7 with sigma 150-600 with viltrox adapter.
the temp outside was -14c about 6 degrees f. i was happily shooting a few slowly taking off for about 10 min and the a7 started acting up,the lcd would flicker and change from evf to lcd while i was looking thru evf. it wouldn't respond to any changes either, so i put it away and used the freeze proof em1.
was happily shooting with that for a good 20 min and everything was fine but my battery flashed almost empty. i was done shooting anyways. when i got home and warmed up to view the images the em1 battery showed 30% after it warmed up. i was happy the cam performed well in the cold as i will be using it in the north where i work but not happy the battery can only last nearly half as long as it should. it preformed much better than the a7 but for a weather proof camera i thought the battery would be better than that. just sharing my findings.