Ex Machina
Captain
Flight distance : 1806362 ft
United States
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Mir Posted at 2017-3-2 10:40
At first I was pretty skeptical of the results in this thread (mainly because it was being borderline spammed)... but after some hour of testing I can conclusively say there is a noticeable difference in quality going from NTSC to PAL, which effectively "resets" the camera. Zooming in 100% there is noticeably less denoising/water color effect and small details appear much better. If you're not a pixel peeper, or photographer you will probably not notice this.
However, the water color issue is still somewhat there. I don't think we'll every fully get rid of it, simply due to the limitations of the camera's max bitrate which is 60Mbps. For those non geeks... 60mbps is very low for 4k. In fact if you go any lower it's unusable, so we're at the low end of 4k quality. Essentially the camera needs to compress each frame dramatically so it can fit the max bitrate, and the "watercoloring" is a side effect of this issue.
If DJI is reading this thread (which I hope) there are still possibilities to improve the camera given the current hardware limitations. If we lower the video framerate, you should allow less compression to dramatically improve image quality. 2.7K also should have MUCH better quality than it currently does, given it's lower bandwidth from 4k. Hopefully this is being looked into.
I can conclusively say there is a noticeable difference in quality going from NTSC to PAL, which effectively "resets" the camera. Zooming in 100% there is noticeably less denoising/water color effect and small details appear much better. If you're not a pixel peeper, or photographer you will probably not notice this.
Are you sure you are not noticing differences in frame rate? IOW, did you compare 25fps/4K/PAL to 30fps/4K/NTSC?
I know in broadcast TV PAL is a bit higher resolution than NTSC, but I'm not sure this is applicable in a digital context.
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