N Theogen
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JohnRaggio Posted at 2018-2-21 13:30
The FOV of the lens cannot be changed. That is true as it's simple physics, but if video mode crops significantly, as it does according to observations and tests below in the thread, then the effective FOV is reduced, given the same subject to camera distance. in other words, we would need to move back much further in video mode to capture the same frame. Any idea what the effective FOV might be? I have to exercise all of my memory of HS math to figure it out. It's certainly less than 81.9 due to the cropping., no?
I've been pondering this from the perspective of creating mosaic maps (flying a grid pattern, taking pics).
and calculating overlaps
My back of a fag packet calculations say -
89.1 FOV is close to a right angle. Close enough to say that at 100 meters alt your Spark camera will capture about 200m L-R and 150m T-B (4:3!) , pointing straight down, which, of course, it can't.
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