Doorzichtig Messing vergelijking bigma lens informeel ik heb het gevonden Horen van
Sigma 50-500mm f/4-6.3 EX DG APO HSM Interchangeable Lens Review | ePHOTOzine
Sigma 50-500mm F4.5-6.3 APO DG OS HSM [REVIEW]
Bought a Bigma (Sigma 50-500mm) for 4/3. Now I need an adaptor to go from 4/3 to M4/3 so I can use it on my OM-D bodies. Anyone have a MMF-3 or the Panasonic equivalent, the DMW-MA1? : r/OlympusCamera
For Sale - Sold Sigma 50-500mm f/4.5-6.3 APO DG OS HSM "Bigma" in Excellent Condition (Reduced Price) - PentaxForums.com