Olympus's extraordinary constant-aperture superzoom with IS, covering 24-200mm equivalent.
The Olympus M.Zuiko Digital ED 12-100mm f/4 IS PRO is arguably the most impressive superzoom ever made. Covering a 24-200mm equivalent range at a constant f/4 with built-in IS and PRO-level weather sealing, it defies the usual superzoom trade-offs. The optical quality is so good that many photographers use it as their only lens.
Optical quality is exceptional for any zoom, let alone an 8.3x superzoom. Sharpness is outstanding across the range with well-controlled aberrations. The built-in IS cooperates with body IBIS for up to 6.5 stops of stabilisation. Autofocus is fast and accurate. Build is PRO-level weather sealed.
Micro Four Thirds mount only, 72mm filter thread. The constant f/4 throughout an 8.3x range is unique — no competitor from any manufacturer matches this. The Panasonic 12-60mm f/3.5-5.6 offers less range; the Olympus 14-150mm offers more range but variable aperture and worse optics.
Strong value used. Check IS operation, weather seals, and AF motor. This lens holds value well due to its unique capability. It is the strongest argument for the MFT system — no full-frame system offers equivalent versatility in one weather-sealed lens at constant aperture.