680400: f=50mm F/3.0~22 UV Lens [200nm to 900nm Transmission]: 21mm imaging circle, minimum working distance = 170mm, lens filter thread: M52x0.75, C-Mount
f=50mm F/3.0~22 UV Lens [200nm to 900nm Transmission]: 21mm imaging circle, minimum working distance = 170mm, lens filter thread: M52x0.75, C-Mount