The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sirui 85mm F1.4 X and the Sony FE 35mm F1.4 GM 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. Sirui 85mm F1.4 X is the longer of the two lenses at 102mm. The Sony FE 35mm F1.4 GM with a length of 96mm, is 6mm shorter. Besides being longer, the Sirui 85mm F1.4 X also has a larger diameter of 80mm compared to the Sony FE 35mm F1.4 GM's 76mm 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. Sony FE 35mm F1.4 GM weighs 524g, 2% (16g) lighter than the Sirui 85mm F1.4 X's weight of 540g.
Filter Threads
Both the Sirui 85mm F1.4 X and the Sony FE 35mm F1.4 GM have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sirui 85mm F1.4 X has the Fujifilm X lens mount whereas the Sony FE 35mm F1.4 GM has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Focal Range
Sirui 85mm F1.4 X is a prime lens with fixed focal lenght of 85mm which has an effective (full-frame 35mm equivalent) focal range of
127.5mm when used on a 35mm FF format camera.
On the other hand, the Sony FE 35mm F1.4 GM is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm.
