The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 85mm F1.4 GM II and the Sigma 135mm F1.8 DG HSM A 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. Sigma 135mm F1.8 DG HSM A is the longer of the two lenses at 139mm. The Sony FE 85mm F1.4 GM II with a length of 107mm, is 32mm shorter. Besides being longer, the Sigma 135mm F1.8 DG HSM A also has a larger diameter of 91mm compared to the Sony FE 85mm F1.4 GM II's 85mm diameter.
Below you can find a scaled side-by-side image of Sony FE 85mm F1.4 GM II and Sigma 135mm F1.8 DG HSM A to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 85mm F1.4 GM II and the Sigma 135mm F1.8 DG HSM A 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. Sony FE 85mm F1.4 GM II weighs 642g, which means it is 488g (43%) lighter than the Sigma 135mm F1.8 DG HSM A which has a weight of 1130g.
Filter Threads
The Sony FE 85mm F1.4 GM II has a filter size of 77mm whereas the Sigma 135mm F1.8 DG HSM A 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 77mm filters that we recommend you to consider for the Sony FE 85mm F1.4 GM II:
And these are the 82mm filters that we recommend for the Sigma 135mm F1.8 DG HSM A:
Lens Mounts
The Sony FE 85mm F1.4 GM II has the Sony E lens mount whereas the Sigma 135mm F1.8 DG HSM A has the Leica L lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Focal Range
Sony FE 85mm F1.4 GM II 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 .
On the other hand, the Sigma 135mm F1.8 DG HSM A is a prime lens with fixed focal lenght of 135mm.
