I'm trying to get the best for the cheapest, in choosing CCD / CMOS board camera. I have looked at the BNC style security cameras, labratory BNC microscope ccd cameras, and a bunch of on-board ccd/cmos cameras commonly used for quad-copter r/c live video. I think the on-board ccd/cmos cameras are just the GUTS of what's inside those big fat huge BNC security / labratory cameras, without all the nice R/F filtering probably.
The stats on these devices, some of them claim 800 tvl, 1000 tvl, 1200 tvl.
Is this fiction? I thought there was a limitation to the composite video standard signal 480 or 560 lines. In order to display anything above that, I would need to use an hd-signal, or a processed data stream?
If a composite video signal has a resolution limitation, and the camera claims 1200 tvl with anything over a 1.3 megapixel, then it's overkill - since that signal has to be degraded to sent though a composite wire. No? I'm confused.
Does anyone here know more about this?