Advertised as 8000TVL 25mW 1/3. What means 1/3? It refer to the sensor area, 1/3 of inch. Other commons cams are usually 1/4 of inch. More area means more light, so more sensitivity and image quality.
This is the theory. I just started to analyze and disassembly the cam, comparing with the well known CM275T: http://www.banggood.com/CM275T-5_8G-25mW-48CH-NTSCPAL-Mini-VTX-600TVL-FPV-Camera-for-DIY-Micro-FPV-Racer-p-1102464.html?rmmds=search
I have a F36 frame with Chaoli motors and Beecore FC and I want select the better camera for the project: CM275 or EF-02?
Left: CM, Right: EF. Bigger sensor seems to be true.
PCB thickness of the EF is like paper: this helps to save wheight.
This is CM pcb thickness.
Power consumption for CM: 380mA
Power consumption for EF: 307mA
Difference in consumption is very noticeable BUT… VM has linear antenna and EF has a cloverleaf. In the next images this aspect can be more clearly interesting.
Naked the EF, removing the cloverleaf antenna: very lightwheight, 2.62 grams.
Wheight of the “complete” set CAM, cables and linear antenna: 3.45
CM cam “complete” set has same wheight.
Now, the interesting thing: the EF with soldered linear antenna, similar to the CM antenna, uses more mA. Why? Beacuse the antenna is more efficient and more power is radiated in the air? Or the opposite is true, the antenna is less efficient and energy is waste in warming electronics?
Some RF exptert needed here to explain this
In the next episode, I think I will measure temperature and then, when decision made, I will split the selected cam, separating CAM from VTX for a low profile mount.
Meanwhile, how I can measure TVL specification? How tell if 800TVL is true?