KV10120DIR, 10-120mm IR corrected, DC iris, Vari Focal lens is now available from Kawaden Japan. It has a C mount and usable for 1/2 & 1/3 inch format cameras. You can find high resolution picture closed to mega pixel and high contarast. Best item for traffic surveillance.
Neverthless to say, no focus shift between day/night time.
DC iris only model is also available.

●	3MP 1/2.7" 7-50mm
●	3MP 2.8-12mm F1.4 DC, varifocal for 1/2.7 & 1/3 inch