According to latest Olympus rumors, the 300mm f/4 PRO lens release date scheduled for November 15, 2015.
Olympus 300mm f/4 PRO MFT lens is expected to feature extremely high quality optics. The super telephoto prime lens provides a 35mm focal length equivalent of 600mm and also gives constant aperture of f/4.
Olympus 300mm f/4 PRO Lens Scheduled for November Release
The Olympus 300mm f/4 lens will feature dust- and splash-proof construction and looks to be roughly the same size as the 40-150mm f/2.8 PRO.
The M.Zuiko Digital ED 300mm f/4 PRO lens has been displayed at Photokina 2014 event last year and now the rumor mill is claiming that the Olympus is now planning to release the 300mm f/4 PRO lens in November 15.