Arducam C-Mount Lens for 12MP IMX477 Raspberry Pi HQ Camera, 16mm Focal Length with C-CS Adapter，Manual Focus and Aperture Adjustment

Lens seems well made & good for my scientific application. If you want to add a filter, thread size is 37mm.

I feel a little dumb for all of the $250 to $450 C-Mount lenses I bought. This one is probably as good as a $300 Edmund Optics lens. Only downside is they don't have many choices of other focal lengths.

I adapted this onto a camera for use as a cine lens... And it is awesome! Chromatic aberration at f1.4 but come on... if you are on a big crop in video shooting on a digital sensor, the cost benefit ratio is very much in your favor regardless. Just make sure your copy doesn’t lose its focus position when turned up and down, it’s been known to happen from loose connections. But the manufacturer showed concern and was quite helpful in this regard.

This lens is easy to focus and makes for a good security camera lens for medium distances like small yards, or large rooms where the camera is going to be mounted high or a little bit away from the subject area.

I had been warned that lenses for 1" camera sensors would be hard to find and pricey. These lenses did not disappoint in price or performance. (Though they were hard to find... 😅)