Olympus is rumored to announce a M.Zuiko 12-100mm f/4.0 PRO lens by this fall. It will be a standard zoom lens for mirrorless cameras with Micro Four Thirds image sensors.

Olympus 12-100mm f/4.0 PRO lens is expected to feature extremely high quality optics.  Dust and splash-proof housing will sure make it perfect even for professional users.

Olympus 12-100mm f/4.0 PRO lens rumored for this fall

Photokina is the worlds biggest digital imaging event and photo enthusiasts welcome new products in the industry from all brands. The Japan-based company is rumored to announce the new Micro Four Thirds camera this year.
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