This is the lens/shop:
4K LENS 3.8mm f/2.8 82d HFOV 16MP (No Distortion)
I tried several lenses (the 5.4mm and many other with good rating) but this is the only one I´m happy with.
The most lenses only had a good sharpness in the center, awfull sharpness on the edges.
I also like the focal...