Olympus's PRO ultra-fast wide prime — 34mm equiv at f/1.2 with weather sealing for MFT.
The Olympus M.Zuiko Digital ED 17mm f/1.2 PRO was released approximately 2017 as a fast wide prime for Micro Four Thirds, providing 34mm full-frame equivalent perspective. Fifteen elements in 11 groups. Nine rounded aperture blades. 62mm filter thread. At 390g. 0.20m MFD. Manual Focus Clutch.
Fifteen elements in 11 groups (aspherical + ED elements). Nine rounded aperture blades. The 62mm filter thread. At 390g. Minimum focus distance of 0.20m. MF Clutch for instant AF/MF switching by pulling focus ring. Stepping motor AF. f/1.2 maximum aperture. Micro Four Thirds mount (34mm full-frame equivalent). IP53 splash, dust and freeze proof.
The PRO designation and f/1.2 aperture define the M.Zuiko 17mm's position: f/1.2 on Micro Four Thirds provides a depth of field equivalent to f/2.4 on full-frame at equivalent field of view — relatively shallow for MFT but less extreme than full-frame f/1.2. The 0.20m MFD enables close foreground compositions at the 34mm equivalent perspective. The MF Clutch enables instant manual focus override.
On the used market the Olympus M.Zuiko 17mm f/1.2 PRO is available at MFT fast prime pricing. Condition checks: MF Clutch mechanism, AF response, 62mm front element for marks. IP53 weather sealing. Compatible with all Micro Four Thirds bodies.