Birding with Olympus M.Zuiko Digital ED 300mm f4.0 PRO Lens | liewwk   I am lucky to have this len with me for 2 days testing … I brought this len to various locations for real world testing … from bright, dark, lowland, montane etc .. with the small sensor size, this 300mm F4 make … Continue reading “600mm F4” birding setup and ONLY “2.15KG” !!! Olympus M.Zuiko ED 300mm F4 … | liewwk