The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 135mm F1.8 DG HSM A and the Fujifilm XF 90mm F2 R LM WR 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 Fujifilm XF 90mm F2 R LM WR with a length of 105mm, is 34mm shorter. Besides being longer, the Sigma 135mm F1.8 DG HSM A also has a larger diameter of 91mm compared to the Fujifilm XF 90mm F2 R LM WR's 75mm diameter.
Below you can find a scaled side-by-side image of Sigma 135mm F1.8 DG HSM A and Fujifilm XF 90mm F2 R LM WR to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 135mm F1.8 DG HSM A and the Fujifilm XF 90mm F2 R LM WR 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. Fujifilm XF 90mm F2 R LM WR weighs 540g, 52% (590g) lighter than the Sigma 135mm F1.8 DG HSM A's weight of 1130g.
Filter Threads
The Sigma 135mm F1.8 DG HSM A has a filter size of 82mm whereas the Fujifilm XF 90mm F2 R LM WR has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Sigma 135mm F1.8 DG HSM A:
And these are the 62mm filters that we recommend for the Fujifilm XF 90mm F2 R LM WR:
Lens Mounts
The Sigma 135mm F1.8 DG HSM A has the Leica L lens mount whereas the Fujifilm XF 90mm F2 R LM WR has the Fujifilm X lens mount . Some of the latest released cameras that are compatible with these mounts are Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Focal Range
Sigma 135mm F1.8 DG HSM A is a prime lens with fixed focal lenght of 135mm.
On the other hand, the Fujifilm XF 90mm F2 R LM WR is a prime lens with fixed focal lenght of 90mm which has an effective (full-frame 35mm equivalent) focal range of 135mm when used on a APS-C / DX format camera.
