The only real difference between the 10X G2 and the 10X G3 is just the lens.

The 10X G2 had some issues where the white balance and exposure options didn't work because of the lens being used. To make the camera fit into the rest of the HuddleCamHD line that offer white balance and exposure control, we switched the lens to one that would allow for exposure and white balance control.

Since the lens change caused a different field of view (G2=53 degrees, G3=61 Degrees), we went to the G3 moniker to signify the difference.