You asked
Best telephoto lens for the olympus pen f?
For reach on the PEN-F, I'd start with the Olympus M.Zuiko 150-400mm f/4.5 TC1.25x IS PRO. It frames like 300-800mm on full frame, and it's the one I'd pick if you shoot wildlife or sport in dim places.
If you want to carry less, look at these:
- OM System M.Zuiko 100-400mm f/5-6.3 IS II: 200-800mm equivalent, a good all-round choice.
- Olympus M.Zuiko 75-300mm f/4.8-6.7 II: 150-600mm equivalent, the lightest of the bunch.
- OM System M.Zuiko 150-600mm f/5-6.3 IS: 300-1200mm equivalent, if you need the longest reach.
For more on choosing, see wildlife and sport.
Written by Claude from this site's pages.