The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 50-150mm F2 and the Sigma 135mm F1.8 DG HSM 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. Sony FE 50-150mm F2 is the longer of the two lenses at 200mm. The Sigma 135mm F1.8 DG HSM with a length of 141mm, is 59mm shorter. Besides being longer, the Sony FE 50-150mm F2 also has a larger diameter of 103mm compared to the Sigma 135mm F1.8 DG HSM's 91mm diameter.
Below you can find a scaled side-by-side image of Sony FE 50-150mm F2 and Sigma 135mm F1.8 DG HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 50-150mm F2 and the Sigma 135mm F1.8 DG HSM Size and Weight 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. Sigma 135mm F1.8 DG HSM weighs 1130g, 15% (210g) lighter than the Sony FE 50-150mm F2's weight of 1340g.
Filter Threads
The Sony FE 50-150mm F2 has a filter size of 95mm whereas the Sigma 135mm F1.8 DG HSM has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 95mm filters that we recommend you to consider for the Sony FE 50-150mm F2:
And these are the 82mm filters that we recommend for the Sigma 135mm F1.8 DG HSM:
Lens Mounts
Both the Sony FE 50-150mm F2 and the Sigma 135mm F1.8 DG HSM has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Sigma 135mm F1.8 DG HSM is also available in Sigma SA , Nikon F (FX) and Canon EF mounts.
Focal Range
Sony FE 50-150mm F2 has a focal range of 50-150mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75 - 225mm .
On the other hand, the Sigma 135mm F1.8 DG HSM is a prime lens with fixed focal lenght of 135mm.