ZF.2 with F bayonet for digital SLRs support all- important operations such as the automatic mechanisms for time, aperture setting and program thanks to its electronic interface (CPU).  

The 50/2.0 Makro Planar lens is the currently the fastest 50mm macro lens available for the 24 x 36 full frame format.
It offers very high image quality over the entire focusing range from infinity to the close-focus limit at half life-size [1:2]. The optical system includes a "floating element" for maximum image quality and is contained in a long life full metal barrel with precision mechanics.