Originally C500 camera comes with 2.8mm lens with 71.5 horizontal and 53 degrees vertical FOV.
Sometimes it is not enough and there is no options to order this camera with a wider view lens.



Digging-in revealed a standard 12x0.5mm lens that is 17mm long.









Finding appropriate 1.8-2.1mm lens should not be a problem.

Housing made of PLA plastic and some alloy and it is roughly 70% empty.




Camera PCB is quite small





Ordered 2.1mm lens on eBay for under $11 delivered. Once it arrives we'll post an update.There's no place like ~

Lens PT-02118BMP from M12lenses focus is very inconsistent - side blurs are extensive even though it is listed for 1/3" sensor.

Bought another lens from B&H Photo and Video and it appears much clearer without any blur on a sides.
www.bhphotovideo.com/c/pr..
MPM2.1 M12-Mount 2.1mm Fixed Focal Lens from Arecont Vision.







Calculated FOVs:
Horizontal: 112 degrees
Vertical: 77 degrees
original camera's FOVs:
Horizontal: 71.5 degrees
Vertical: 53 degrees

This is a capture for Arecont Vision lens:

and this is for PT-02118BMP from M12lenses:


Getting more lenses on order.There's no place like ~

Forgot to mention, eBay ordered lens is totally worthless. Peripheral focus is no good.
Ordered lens from M12Lenses cost me $27+ delivered.
Arecont Vision lens has F/1.8 aperture which is brighter than original F/2.0 while depth of field is almost as good as F/2.0.There's no place like ~