Logitech c270 M12x0.5 lens mount.

This allows a standard M12x0.5 lens mount to be fitted to a Logitech c270 webcam so that lenses with different focal lengths or fisheye lenses can be attached.

Requires standard 20mm hole spacing lens holder e.g:

https://www.ebay.co.uk/itm/133159174869

You might also want to use this with a telescope adaptor:

https://www.ebay.co.uk/itm/301880349242

Other lenses and holders can be purchased here:

http://www.m12lenses.com/category-s/76.htm

The spacing of the holes in the c270