OWSOO Lens,5-100mm CCTV Lens,CS F1.8 Lens,1/3" Manual Iris & Focal Length Lens,Varifocal Zoom CS-Mount Lens for Security CCTV Camera

I used this with a ZWO ASI-120MC-S astronomical camera. There is a tiny bit of play in the mount but it does not seem to affect the image quality (the camera has a rather small sensor so any degradation may be outside of the image circle). What is unacceptable is that the lens has a multitude of lens elements and produces lots of internal reflections: for example, Jupiter "has" a good fifteen or so Galilean moons. For terrestrial imaging the reflections do not seem to be an issue.

A bit of pincushioning @ telephoto, as is expected, (not too terrible). A fine designed lens for this price, good focus at center, slight blurring at edges @ max zoom. Focus takes a bit of finesse. Suits my purposes, and the image looks good enough on a 5MP camera sensor.

Image is dark and always cropped out in the corners

Works great, and as advertised. After-sales service is very good. They answered my questions in a timely manner. I will recommend it to my friends.

I like this lens, everything is fine.