Please Read:
This was a very quick test. I got my GH3 at the beginning of last week and have been too busy to shoot something more substantial. This was simply to satisfy my own curiosity about the camera:
1) To see the different MOV modes and frame rates
2) To see if there is Moiré and Aliasing present
3) Check the digital zoom function
4) Test the in camera slow motion and compare it to retiming in FCPX

The images outside were shot on a Panasonic 20mm f1.7. The images in the Christmas market were shot on the 14-45mm f3.5-5.6. These are the only two met lenses I have right now.

I worked between auto and manual focus with these shots. What I did discover though is that auto-focus tracks, and this needs to be turned off, or the focus locked on to avoid focus tracking artefacts.

There's a lot I like about this camera, but I am disappointed by the levels of Moiré and Aliasing. Nearly 4-5 years since video enabled DSLRs were launched there's no real excuse for this still to be present in new DSLRs being launched today. The sensor technology should have evolved to reduced or eliminate these effects. I do not own a GH2, but if I did and bought a GH3 I think I'd be hurting quite a bit at the level of Moiré and Aliasing. For me what I am seeing would not warrant an upgrade, not yet. But the 7D had the same issue when launched 4 years ago. I really hope Panasonic work on improving this in future firmware upgrades.

My next test will be with the AVCHD settings which I suspect may well be a work around for the Moiré and Aliasing as I have seen this in Sony cameras where AVCHD holds up very well, but MOV or MP4 just falls apart with Moiré in particular.

The colour grade was a simple s-curve with a little saturation boost added in magic bullet looks just to see what the image looks like. In some instances the saturation boost is a bit too much, but I wanted to apply it equally on each clip.

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