This particular lens has a maximum focal length of 4.5 mm and a minimum focusing distance of 0.5 m. It is not a zoom lens, but rather a prime lens.
From Amazon
Olympus M.Zuiko Digital ED 45 mm F1.2 PRO Lens, Fast Fixed Focal Length, Suitable for All MFT Cameras (Olympus OM-D & PEN Models, Panasonic G Series), Black
HDEW Cameras
Olympus M.Zuiko Digital ED 45mm F1.2 PRO
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