It's the security cam 540tvl and its using a 3.6mm
You know as an alternative to a OSD you can probably get a EagleTree altimeter. I think it works stand-alone and you just download the data after your flight. I wanna say they are $30. Might wanna double check though
An altimeter would be awesome but I'm saving up for an ezOSD
ASL or AGL?
Purveyors of FPV goodness
I would guess ~2000 ft.
1300 meters or so.
1000 - 1300 meters probably, or ~3000 ft.