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Make
Panasonic
Model
DMC-GH3
ISO Speed
400
Focal Length
40.0mm
Aperture:
f/8.0
Exposure
1/1000s
Make
Panasonic
Model
DMC-GH3
ISO Speed
800
Focal Length
150.0mm
Aperture:
f/2.8
Exposure
1/320s
Make
Panasonic
Model
DMC-GH3
ISO Speed
400
Focal Length
150.0mm
Aperture:
f/2.8
Exposure
1/3200s
Make
Panasonic
Model
DMC-GH3
ISO Speed
800
Focal Length
150.0mm
Aperture:
f/2.8
Exposure
1/640s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
150.0mm
Aperture:
f/2.8
Exposure
1/4000s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
150.0mm
Aperture:
f/3.5
Exposure
1/640s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
150.0mm
Aperture:
f/2.8
Exposure
1/1000s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
100.0mm
Aperture:
f/4.5
Exposure
1/640s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
57.0mm
Aperture:
f/2.8
Exposure
1/640s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
40.0mm
Aperture:
f/5.6
Exposure
1/125s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
64.0mm
Aperture:
f/2.8
Exposure
1/640s
Make
Panasonic
Model
DMC-GH3
ISO Speed
200
Focal Length
135.0mm
Aperture:
f/4.0
Exposure
1/800s
Verdict
The Olympus M.Zuiko ED 40-150mm f/2.8 PRO is, mostly, a highly desirable lens - except for one bug. On the positive side, it is very good if not excellent in the primary image quality metrics. It is very sharp across the focal length range including some greatness in the middle portion. Vignetting and distortions are very low - of course in the auto-corrected result but also in the underlying RAW image. The (uncorrected) lateral CAs are not an issue as well. One the downside, the quality of the bokeh (out-of-focus blur) can be disappointing - not in all scenes but busy backgrounds are clearly not the lens' best friends. The lens is also available in a kit with the Olympus 1.4x tele-converter. The combination is reasonably good but as so often with converters don't expect wonders.
The mechanical quality of the M.Zuiko is very impressive again. The lens body is made of all the right ingredients thus tightly assembled and sealed metal parts and smooth control rings. The awesome design of the telescope-style lens hood should also be mentioned here once more. The AF is speedy by Micro-Four-Thirds standards. The Olympus lens does NOT feature an image stabilizer. While this is not a problem on Olympus or Panasonic GX cameras, it is not be the best choice for the Panasonic GH, G and GM camera series.
Olympus M.Zuiko ED 40-150mm f/2.8 PRO is directly competing with Panasonic's Lumix G X 35-100mm f/2.8 Power OIS. Obviously the Olympus has the bigger range (and as such also a bigger size/weight) and is somewhat sharper whereas the Panasonic has clearly the better bokeh plus an image stabilizer. Both are very good really.
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