Pure glass and adjustable to fit all M67 threads. (or M52)
* M52/M67 adaptor
* Maximum view angle 149.8 underwater for semi-fisheye imaging
* pressure tight to 60m
This lens is working well with many camera solutions, such as: G15, G16 or the PowerShot G7 X (Mark II)
If you have Sony RX100, then you should choose the "H" unit.