M.Zuiko ED 40-150mm F2.8 PRO
When it comes to flexibility, performance, quality and durability, this is one of my all time favorite lenses! At 40-150mm (80-300mm 35mm equivalent) this is great for long lens panoramics and landscapes. Throw a MC-14 (1.4) teleconverter on there and you are shooting a 56-210mm lens (112-420mm 35mm equivalent) and then put the MC-20 (2.0) teleconverters and it is a 80-300mm (160-600mm 34mm equivalent) lens! This is a lens I carried around the entire time in Yellowstone, Costa Rica, Galapagos Islands, and Big Bend. I never leave this lens at home!