The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Thypoch 75mm F1.4 M and the Sirui 85mm F1.4 X 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 Thypoch 75mm F1.4 M with a length of 78mm, is 24mm shorter. Besides being longer, the Sirui 85mm F1.4 X also has a larger diameter of 80mm compared to the Thypoch 75mm F1.4 M's 64mm 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. Thypoch 75mm F1.4 M weighs 372g, which means it is 168g (31%) lighter than the Sirui 85mm F1.4 X which has a weight of 540g.
Filter Threads
The Thypoch 75mm F1.4 M has a filter size of 62mm whereas the Sirui 85mm F1.4 X has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Thypoch 75mm F1.4 M:
And these are the 67mm filters that we recommend for the Sirui 85mm F1.4 X:
Lens Mounts
The Thypoch 75mm F1.4 M has the Leica M lens mount whereas the Sirui 85mm F1.4 X has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Focal Range
Thypoch 75mm F1.4 M is a prime lens with fixed focal lenght of 75mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
112.5mm.
On the other hand, the 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.
