Is the panasonic lumix g x pz 45 175mm f 4 5 6 good for sports?

It's a reasonable pick for outdoor sport in good light. On Micro Four Thirds it frames like 90-350mm on full frame, which gives you real reach from the sideline. It's stabilised and autofocuses, which helps.

The catch is the aperture. At f/4-5.6 it gets darker as you zoom in, so indoor games and dusk fixtures will push you to high ISO and slow shutter speeds. The lens is only part of the job, too. Fast, reliable autofocus on the body matters a lot for moving subjects, so I'd look at the OM System OM-1 Mark II or Panasonic Lumix G9 II from this lens's list. For more on what sport demands, see wildlife and sport.

Written by Claude from this site's pages.