Anyone knows of a device that can send an HDMI signal to the ground. Most up to date DSLR cameras now have a HDMI output and not an AV output anymore. One can use a converter to change the HDMI to AV but that adds another 220 grams of weight and the AV signal is not very good.
Altough I think the price would be out of most people's reach, this downlink probably cost less than a 100 dollars to maufacture,
Yes i totally agree. If is it just to preview what the camera see, then adding a cctv camera set to closely match the DSLR view is a cheap alternative.
I think then it would be easier to convert HDMI signal to AV. Problem still not solved!
Looks like a nice device for the home but the operating distance is only about 30 metres.
Yes, that's a bit feeble. Says output is 12 dBm or about 15 mW.
Perhaps they'd be hackable for the installation of a better, external antenna?
I'm not very good at hacking things, prefer buying an off the shelf item that works.
What is the purpose of sending HDMI signal to the ground? Is it just for camera sighting, or do you want realtime HD (I didn't think most DSLRs supported live HD monitoring) video monitoring? If it's just to control what your camera is pointing at, just use a cheap FPV setup that includes a tiny camera that weighs nothing like the $70US unit below. Several professional camera gimbals have these mounted on the side of the gimbal so they can support any camera the copter can lift.
I think we are talking about serious aerial video and photography here, well that was my intrention when I started this discussion.......
I guess I don't understand what you mean by serious video. The kit I referred above is just for sighting a camera that does not have it's own composite video out. The transmitter is a 200mW device, that weighs nothing (25g), which translates to you having MORE payload and MORE Amp hours available for whichever camera you decide to use. If you try to get HDMI to the ground, it will cost you a lot more power and weight and therefore reduce the amount of time and payload you can use for the actual work of filming.