The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 135mm F2.0 ED UMC and the Hartblei Macro 120mm F4 TS for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Samyang 135mm F2.0 ED UMC is the longer of the two lenses at 122mm. The Hartblei Macro 120mm F4 TS with a length of 106mm, is 16mm shorter. On the other hand, the Hartblei Macro 120mm F4 TS has a larger diameter of 89mm compared to the Samyang 135mm F2.0 ED UMC's 82mm diameter.
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. Samyang 135mm F2.0 ED UMC weighs 830g, which means it is 135g (13%) lighter than the Hartblei Macro 120mm F4 TS which has a weight of 965g.
Filter Threads
The Samyang 135mm F2.0 ED UMC has a filter size of 77mm whereas the Hartblei Macro 120mm F4 TS has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Samyang 135mm F2.0 ED UMC:
And these are the 72mm filters that we recommend for the Hartblei Macro 120mm F4 TS:
Lens Mounts
Both the Samyang 135mm F2.0 ED UMC and the Hartblei Macro 120mm F4 TS 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.
Samyang 135mm F2.0 ED UMC is also available in Canon EF-M , Four Thirds, Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF, Samsung NX, Sony Alpha and Sony E mounts.
Hartblei Macro 120mm F4 TS is also available in Pentax KAF , Sony Alpha and Nikon F (FX) mounts.
Focal Range
Samyang 135mm F2.0 ED UMC is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
216mm.
On the other hand, the Hartblei Macro 120mm F4 TS is a prime lens with fixed focal lenght of 121mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 193.6mm.