You asked

What is the om system m zuiko 150 600mm f 5 6 3 is good for?

This is a reach lens, aimed at wildlife, birds and distant sport. On Micro Four Thirds it frames like 300-1200mm on full frame, and it's stabilised, so you can hand-hold at the long end when a tripod isn't practical.

The trade-off is the aperture. At f/5-6.3 it gets darker as you zoom in, so you'll want good light or a higher ISO. The depth of field is deeper than the number suggests, roughly what f/10-12.6 gives, which helps keep a moving subject sharp.

For a body, I'd look at the OM System OM-1 Mark II for speed, or the lighter OM System OM-5 Mark II if you want to carry it all day. If you're still working out how much reach you need, Wildlife and sport walks through it.

Written by Claude from this site's pages.

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