"@RogerCon You can get a Raspberry Pi camera with the M12 camera mount. There are some cheap M12 lenses also.
I have ordered this and some M12 lenses that are in deliverey:
http://www.ebay.com/itm/Raspberry-Pi-Camera-Board-w-M12x0-5-mount-L...

You…"

"Oh, seems like I was not the first one with this idea..
http://bitoniau.blogspot.dk/2013/10/video-latency-investigation.html"

"@Dan I never tried the C920. Good point about bandwidth limitation on USB2, will look into that. I actually just renembered that I have a PS3 Eye somewhere, that will do 187 fps, but only at a crummy 320x240. But might be good for benchmarking."

"@bocorps AFAIK the C920 only does 720p@30 fps, if latency is the game, fps matter :-) The joker is if it is possible to encode on the Odroid, perhaps can even be done without specific hardware, just with x264 encoder with the zerolatency flags, but…"

"I kinda like the idea of a separate flight controller, to do RTH in case something breaks. Perhaps just have the RPi or similar talk over serial or evrm USB with the flight controller. I like the Sparky, if I didn't already own a couple of CC3Ds I…"

"Sorry no, considering trying the Odroid C1, and a 60fps 720p USB cam. But should probably get flying with the RPi first.. http://hardkernel.com/main/products/prdt_info.php
http://m.ebay.com/itm/321566843964?cmd=VIDESC"

"@Patrick those helical antennas look nice, and very DIY friendly. I might give that a go!"

"@Patrick the Ubiquiti equipment seems really nice, and I might end up with it, but I will try and hit the wall with normal WiFi first.
For you requirements it could perhaps be great to use a parabolic dish from satellite TV as a WiFi extender. It's…"

"@Patrick yeah, so far it is the raspberry camera module and gstreamer. I will be trying the WR703N as an alternative to the raspberry, it has built in WiFi, and serial console but need a USB camera. I have seen the Logitech C920 has an onboard h264…"

"I'm not certain 802.11ac us the way to go yet. It will be, but drivers seem to be missing.."

"My goal is FPV racing on 250 mm on quads, so range is not as critical... We are 4 friends, and I hope we can have 4 quads flying on the same WiFi router, and just connect laptops to it with lan. It can be that this is not doable, but I will test it…"

"I'm also on the quest to get HD FPV with the RPi on my quadcopter.
@bocorps: The wifi seems to be a RT5572 chipset based, I found this, which states they can only get 2.4 GHz…"