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

This is with the lens covered. No light is getting in. This is just testing the read noise of the sensor. Focal ratio is irrelevant in this test. I could just done this test without a lens. I have ones at the same Focal Ratio as well. However, it doesn't affect the image so I just posted the first two I had.

The point of this test is that when you have a truly dark background like at a dark site the GH2 will cast a purple hue of noise over the whole image even with the in camera noise reduction on.

The GH3 does not. You simply get a black image with some spots of isolated noise where you have bad pixels. You can use the in camera long shutter noise reduction to eliminate the noise from bad pixels. It really isn't worth the extra time though. They are not noticeable unless you display it 1:1.

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GH2, GF1, & ZS3 Sample movies
http://www.youtube.com/user/mpgxsvcd#play/uploads
GH2 Setup Walk through
http://www.youtube.com/watch?v=uROQbbiiO2I
http://vimeo.com/user442745
GH2 Pictures
http://www.dpreview.com/galleries/4222674355/albums