You asked
Is the om system m zuiko 90mm f 3 5 macro is pro good for macro photography?
Yes, this is a strong pick for macro, and I'd say it's one of the most useful macro lenses in the Micro Four Thirds range. The OM System M.Zuiko 90mm f/3.5 Macro IS PRO reaches 2x magnification, and on Micro Four Thirds it frames like a 180mm lens on full frame. That gives you plenty of working distance, so you aren't crowding small subjects like insects or flowers.
It's also weather-sealed and stabilised, which matters when you're shooting handheld in damp gardens or fields. f/3.5 gives about the depth of field of f/7 on this sensor, so stopping down is easier to manage, but you'll still want to shoot at a reasonable aperture and keep an eye on focus.
It fits a long list of bodies, including the OM System OM-1 and the Olympus OM-D E-M1 Mark III. Pair it with a body that has good stabilisation and autofocus, and you have a capable macro kit.
Written by Claude from this site's pages.