There are tricks and shortcuts that can be made to ensure the camera pumps out all the different modes we want in the end.Starting with the sensor, the camera is told to read a certain window of the overall sensor – the bigger the window, the more taxing it is on the processor.
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Luckily for you, Go Pro has added about 137 different filming options so you’ll never really be sure if you’re using the right mode for the activity/film job.
Hopefully I can break it down a bit and unshroud the mysteries of the modes.
Keep in mind this is written for the slightly technologically inclined.
This specific guide was written for the HERO3 line of cameras, but many of the principles and ideas transfer up to the later models of HERO3+ and HERO4.
For 4K in the Go Pro it’s reading the full width of the sensor, but not the full height – it’s capturing a 16:9 portion of the middle of the 4:3 full sensor.
Since the final delivery is 4K, it doesn’t have to scale that initial capture at all.
This capture window is identical for, say, 1080P Wide; however, it scales it down to 1080P for the final output.
To learn about both of those cameras see my additional guides – HERO3+, HERO4, HERO4 Session A few things need to be explained when talking about the technical aspects of video resolutions, framerates, and video quality.
In digital video there are a lot of different variables that go into what makes up the overall IQ (image quality).