Size and Weight Comparison
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony CZ T* 50mm F1.4 ZA SSM weighs 518g, which means it is 1032g (199%) lighter than the Hartblei 40mm F4 IF TS which has a weight of 1550g.
Lens Mounts
Both Sony CZ T* 50mm F1.4 ZA SSM and Hartblei 40mm F4 IF TS has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Hartblei 40mm F4 IF TS is also available in Canon EF , Pentax KAF and Nikon F (FX) mounts.
Focal Range
Sony CZ T* 50mm F1.4 ZA SSM is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 75mm.
Hartblei 40mm F4 IF TS is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 60mm.