What 75mm at f/1.8 actually gives you
75mm is a short-telephoto framing: tight enough to isolate a subject, wide enough to keep some context. On the APS-C bodies it covers, it frames like 113mm would on full-frame.
f/1.8 is fast enough to keep shutter speeds up in poor light and to separate a subject from its background clearly.
Size and filters
At 230g (8.1 oz) it is light enough that it stops being a decision — the kind of lens that stays on the body or in the bag without thought.
Filters are 67mm — worth checking against what you already own, since polarisers and ND filters at this size are reusable across any other lens sharing the thread.
Autofocus and stabilisation
Autofocus is driven by an STM 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.
