You asked

Best telephoto lens for the olympus om d e m5?

For the OM-D E-M5, my pick for most people is the OM System M.Zuiko 100-400mm f/5-6.3 IS II. It frames like 200-800mm on full frame, which covers birds, sport and most wildlife without a huge lens.

If you need the most reach, the OM System M.Zuiko 150-600mm f/5-6.3 IS goes out to a 300-1200mm full-frame equivalent. It's the one for distant animals, but it's a bigger lens to carry.

For poor light, the OM System M.Zuiko 50-200mm f/2.8 IS PRO stays bright at f/2.8 and frames like 100-400mm. You give up some reach, but you gain a lot of speed.

If you're not sure what you'll shoot, wildlife and sport walks through how to choose.

Written by Claude from this site's pages.

From these pages