DarraghCorrigan

DarraghCorrigan

Joined on Nov 7, 2012

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Dinther: I wonder what the bitrates are at the various video modes.

Also I wonder about the real horizontal FOV for each mode. "Ultra wide" means nothing to me and nor does "normal" or "Narrow"

Can anyone help me out with how all this works. The way I see it is that the camera has a fixed lens and a 4K sensor. Therefore At 4k you can only get the "Ultra wide" FOV while at 1080p you can choose to have narrower FOV's because the processor simply picks the 1080p sized area on the 4K sensor depending on the FOV selected. Full "Ultra wide" at 1080p would mean the processor is taking every second pixel on every second row to form the 1080p image etc.

That would explain the weird 2.7k video option. I want these cameras to run at 2.7k with a HFOV of 90 degrees. I suppose that means a replacement lens.

I wonder if the older aftermarket lenses for the Hero fit on this camera.

Any real technical information on the Hero 3 would be greatly appreciated.

Hi Pablo, the confusion here is that the codec outputs are rated in Mb/s whereas the SD card read/write speeds are in
MB/S.
The subtle difference is that Mb/S is megabits per second, whereas MB/S is megabytes per second. One byte is eight bits, so your 30MB/S SD card is actually 30*8 Mb/S, which is 240 Mb/S.
This difference in metrics causes a lot of confusion in the consumer electronics space.

Direct link | Posted on Nov 7, 2012 at 09:57 UTC
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