The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Hartblei 40mm F4 IF TS and the Carl Zeiss Planar T1,4/50 for their suitability to various photography scenarios:
Size and Weight Comparison
The 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. Carl Zeiss Planar T1,4/50 weighs 350g, 77% (1200g) lighter than the Hartblei 40mm F4 IF TS's weight of 1550g.
Lens Mounts
Both the Hartblei 40mm F4 IF TS and the Carl Zeiss Planar T1,4/50 has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Hartblei 40mm F4 IF TS is also available in Pentax KAF , Sony Alpha and Nikon F (FX) mounts.
Carl Zeiss Planar T1,4/50 is also available in Pentax KAF and Nikon F (FX) mounts.
Focal Range
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 1.6x crop, it provides a 35mm (FF) equivalent of 64mm.
Carl Zeiss Planar T1,4/50 is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm.