The Tamron MA23F12V is a 12mm 8 megapixel lens with a M27x0.5 filter size, 0.4 distortion, and 8MP resolution.
The Tamron MA23F 2/3" 8MP Series Lens family features for up to 2/3" sensor sizes, optimized for down to 2.74µm pixel pitch (8mp), 8mp resolution rating, very close working distance (mod), very low distortion, screw locks, click stop iris.
Manufacturer: Tamron Manufacturer PN: MA23F12V Focal Length: 12mm Quality: 8MP Sensor Size: 2/3" Lens Mount: C F Stop: 2.4 M.O.D. (m): .1 Dimensions (LxW mm): call Iris type: smooth Filter size: M27x0.5 Distortion: 0.4 Resolution: 8MP