OM System's flagship PRO telephoto — 80-300mm equiv at constant f/2.8 with weather sealing.
The OM System M.Zuiko Digital ED 40-150mm f/2.8 PRO is a constant-aperture professional telephoto zoom for Micro Four Thirds, providing approximately 80-300mm equivalent at f/2.8. Originally released under the Olympus brand and continued under the OM System name post-2021. Highly regarded in the MFT system. MFT mount.
f/2.8 constant aperture. 40-150mm zoom range (approximately 80-300mm equivalent on MFT). PRO weather-resistant construction. Built-in motorised tripod collar. At approximately 880g. 72mm filter thread. Micro Four Thirds mount.
The 40-150mm f/2.8 PRO is one of the most versatile telephoto zooms in any mirrorless system: the constant f/2.8 combined with the 2× MFT crop factor provides 300mm equivalent reach with f/2.8 light gathering — equivalent to a 600mm f/5.6 in full-frame reach-and-aperture terms. Compatible with the optional 1.4× MC-14 and 2× MC-20 teleconverters.
On the used market the OM System M.Zuiko 40-150mm f/2.8 PRO is a premium MFT telephoto zoom. Condition checks: weather sealing integrity, f/2.8 aperture blade condition, AF tracking speed at 150mm, 72mm front element for marks, tripod collar rotation and locking.