GH2 vs GH3 - Long Exposures and Astrophotography (Test shots inside)

amtberg wrote:

Ironically, I'm guessing that the GH3's seemingly very good long exposure ability is attributable in part to Panasonic's effort to improve video performance. As I understand it, a big issue with long exposures is heat build-up on the sensor, and according to interviews, Panasonic went to some lengths to minimize sensor heat to accommodate long video recording sessions at high bitrates. Perhaps that effort will prove valuable to astrophotographers as well.

I've never done much in the way of long exposures, but for the hell of it I just tried a few in my back yard to see what would happen. Just used a table top tripod with the 12-35 lens. I turned off dark frame subtraction....