What 90mm at f/2 actually gives you
90mm is the classic portrait range — long enough to compress features flatteringly without forcing you across the room. On the APS-C bodies it covers, it frames like 135mm would on full-frame.
f/2 is fast enough to keep shutter speeds up in poor light and to separate a subject from its background clearly.
Size and filters
At 540g (1.19 lb) it sits in the middle for handling: substantial enough to feel planted, light enough not to dominate the kit.
Filters are 62mm — worth checking against what you already own, since polarisers and ND filters at this size are reusable across any other lens sharing the thread. A dedicated aperture ring gives direct control without going through a camera dial, which mostly matters for video work.
Autofocus, stabilisation and weather sealing
Autofocus is driven by a Linear motor.
There is no optical stabilisation in the lens, so handheld steadiness depends on the body having IBIS, or on keeping the shutter speed up.
The barrel is weather-sealed, so rain and dust are a manageable risk rather than a reason to pack up.
