The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax-D FA 85mm F1.4 ED SDM AW 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. Pentax-D FA 85mm F1.4 ED SDM AW is the longer of the two lenses at 124mm. The Fujifilm XF 90mm F2 R LM WR with a length of 105mm, is 19mm shorter. Besides being longer, the Pentax-D FA 85mm F1.4 ED SDM AW also has a larger diameter of 95mm compared to the Fujifilm XF 90mm F2 R LM WR's 75mm diameter.
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Below you can find a scaled side-by-side image of Pentax-D FA 85mm F1.4 ED SDM AW and Fujifilm XF 90mm F2 R LM WR to get a better idea of how their sizes compare in real life.
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, 56% (715g) lighter than the Pentax-D FA 85mm F1.4 ED SDM AW's weight of 1255g.
Filter Threads
The Pentax-D FA 85mm F1.4 ED SDM AW 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 Pentax-D FA 85mm F1.4 ED SDM AW:
And these are the 62mm filters that we recommend for the Fujifilm XF 90mm F2 R LM WR:
Lens Mounts
The Pentax-D FA 85mm F1.4 ED SDM AW has the Pentax KAF4 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 , and for the Pentax KAF4 Mount and Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2 for the Fujifilm X Mount.
Focal Range
Pentax-D FA 85mm F1.4 ED SDM AW 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 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.