LensTip.com

Lens review

Panasonic Lumix G 25 mm f/1.7 ASPH.

11 March 2016
Arkadiusz Olech

10. Autofocus

The autofocus mechanism joined with the Panasonic G7 works noiselessly and is fast. Running through the whole range and confirming the focus takes about 0.4 of a second, no matter from what end you move. After preselecting the “Pinpoint AF” mode that time increases to about 0.8-0.9 of a second.

While the lens is attached to the Olympus E-M10 camera its autofocus remains equally noiseless and fast. The time you need to run through the whole scale and confirm the focal point takes about 0.4 of a second.

There are no reservations concerning the accuracy of the focusing mechanism. In studio conditions it missed in 2-3% of all cases which is a result that doesn’t worry us at all.


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In the case of all three cameras, used by us in the test, it seems the depth of field was shifted a bit forward. Mind you the proper object was always situated within the DOF range and, after all, the photos were taken from the minimum distance possible so in the most difficult conditions. The fact that exactly the same effect was noticed on three different camera bodies used in our test seems to suggest that you don’t deal here with any autofocus tendency but rather with a specific field curvature.

Olympus E-PL1, f/1.7
Panasonic Lumix G 25 mm f/1.7 ASPH. - Autofocus
Olympus E-M10, f/1.7
Panasonic Lumix G 25 mm f/1.7 ASPH. - Autofocus
Panasonic G7, f/1.7
Panasonic Lumix G 25 mm f/1.7 ASPH. - Autofocus