The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Hartblei 80mm F2.8 IF TS and the Sony 85mm F2.8 SAM for their suitability to various photography scenarios:
Size and Weight Comparison
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sony 85mm F2.8 SAM weighs 175g, 79% (675g) lighter than the Hartblei 80mm F2.8 IF TS's weight of 850g.
Filter Threads
The Hartblei 80mm F2.8 IF TS has a filter size of 72mm whereas the Sony 85mm F2.8 SAM has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Hartblei 80mm F2.8 IF TS:
And these are the 55mm filters that we recommend for the Sony 85mm F2.8 SAM:
Lens Mounts
Both the Hartblei 80mm F2.8 IF TS and the Sony 85mm F2.8 SAM 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 80mm F2.8 IF TS is also available in Canon EF , Pentax KAF and Nikon F (FX) mounts.
Focal Range
Hartblei 80mm F2.8 IF TS is a prime lens with fixed focal lenght of 80mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
120mm.
On the other hand, the Sony 85mm F2.8 SAM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 127.5mm.