I had the chance to shoot video with the Nikon D7000, Nikon D90, Hacked Panasonic GF1(AKA GF13), and a GH1 yesterday. I took some test shots that show the resolution differences between the cameras.
1080p Youtube link
http://www.youtube.com/watch?v=tovWSXvUj9s&fmt=37
The D7000 and GH1 showed outstanding resolution. The GF13 was actually very good for only being 720p. And the D90 was actually fairly disappointing because it just had too many scaling issues to be useful.
I also did some auto focus tests with the D7000 and the GF1. The D7000 focuses fairly well for a DSLR. However, the noise is just too much. You could never use the audio from a clip where you auto focused. You can always use manual focus though. It actually is a lot easier than people realize to manual focus.
The GF1 and the 20mm F1.7 pancake lens does a decent job with auto focus but it still hunts a lot and does put out a slightly audible chirping noise. It is still best to manually focus with the GF1. The GH2 that will be released in December should be the first interchangeable lens camera with extremely useful continuous auto focus.
The last segment in the video shows how some sharpening in post processing can enhance the impression of resolution. However, it can also produce some unwanted artifacts if too much sharpening is applied to sources that already have aliasing issues.
I also posted down-loadable samples from each of the cameras on Vimeo. The links are in the description of the youtube video. This files are all loss less joins of the original files that came out of the cameras with the exception of the GH1 which was inverse telecined to 1080p @ 24 FPS. That is still a loss less process though.
1080p Youtube link
http://www.youtube.com/watch?v=tovWSXvUj9s&fmt=37
The D7000 and GH1 showed outstanding resolution. The GF13 was actually very good for only being 720p. And the D90 was actually fairly disappointing because it just had too many scaling issues to be useful.
I also did some auto focus tests with the D7000 and the GF1. The D7000 focuses fairly well for a DSLR. However, the noise is just too much. You could never use the audio from a clip where you auto focused. You can always use manual focus though. It actually is a lot easier than people realize to manual focus.
The GF1 and the 20mm F1.7 pancake lens does a decent job with auto focus but it still hunts a lot and does put out a slightly audible chirping noise. It is still best to manually focus with the GF1. The GH2 that will be released in December should be the first interchangeable lens camera with extremely useful continuous auto focus.
The last segment in the video shows how some sharpening in post processing can enhance the impression of resolution. However, it can also produce some unwanted artifacts if too much sharpening is applied to sources that already have aliasing issues.
I also posted down-loadable samples from each of the cameras on Vimeo. The links are in the description of the youtube video. This files are all loss less joins of the original files that came out of the cameras with the exception of the GH1 which was inverse telecined to 1080p @ 24 FPS. That is still a loss less process though.
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