What 75-300mm at f/4.8 actually gives you
75-300mm is a short-telephoto framing: tight enough to isolate a subject, wide enough to keep some context. On the Micro Four Thirds bodies it covers, it frames like 150mm would on full-frame.
f/4.8 is a slow maximum aperture, so this leans on good light or on a stabilised body.
Size and filters
At 423g (14.9 oz) it sits in the middle for handling: substantial enough to feel planted, light enough not to dominate the kit.
Filters are 58mm — 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 a Stepping motor.
There is no optical stabilisation in the lens, which matters more at this focal length than at any other: on a body without IBIS you will be holding shutter speeds high to stay sharp.
