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Lens review

Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO

27 July 2016
Szymon Starczewski

10. Autofocus

The autofocus of the Olympus PRO 40-150 mm is noiseless and very quick. Running through the whole distance range and setting the focus takes about 0.3-0.4 of a second no matter from what end you start. It is an excellent result. After attaching the converter the mechanism slows down a bit – the focusing time increases by just about 0.1 of a second. You barely notice that.

We don’t have any reservations concerning the accuracy of the focusing mechanism. In studio conditions the lens joined with any of two bodies, used in our test, hit the aim in 100% of cases.

When it comes to the front or back focus tendencies we managed to notice just one slight problem: after attaching the lens to the teleconverter the depth of field was shifted a bit toward the longer distances.

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E-PL1, 90 mm, f/2.8
Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO - Autofocus
E-PL1, 150 mm, f/2.8
Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO - Autofocus
E-PL1, 210 mm (TC), f/4.0
Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO - Autofocus
E-M10, 90 mm, f/2.8
Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO - Autofocus
E-M10, 150 mm, f/2.8
Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO - Autofocus
E-M10, 210 mm (TC), f/4.0
Olympus M.Zuiko Digital 40-150 mm f/2.8 ED PRO - Autofocus