Panasonic Lumix G X Vario PZ 45-175mm f/4-5.6 ASPH OIS. - Review / Lens Test - Samples & Verdict
Lens Reviews - (Micro-)Four-Thirds

Sample Images & Verdict

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Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 54.0mm
Aperture: f/5.6
Exposure 1/800s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 175.0mm
Aperture: f/5.6
Exposure 1/500s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 116.0mm
Aperture: f/5.3
Exposure 1/1600s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 122.0mm
Aperture: f/8.0
Exposure 1/640s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 112.0mm
Aperture: f/5.6
Exposure 1/3200s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 132.0mm
Aperture: f/5.6
Exposure 1/2500s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 175.0mm
Aperture: f/5.6
Exposure 1/2000s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 45.0mm
Aperture: f/8.0
Exposure 1/1000s
Make Panasonic
Model DMC-GH2
ISO Speed 200
Focal Length 50.0mm
Aperture: f/5.6
Exposure 1/2500s
Make Panasonic
Model DMC-GH2
ISO Speed 400
Focal Length 138.0mm
Aperture: f/5.6
Exposure 1/500s
Make Panasonic
Model DMC-GH2
ISO Speed 400
Focal Length 45.0mm
Aperture: f/5.6
Exposure 1/500s
Make Panasonic
Model DMC-GH2
ISO Speed 400
Focal Length 116.0mm
Aperture: f/5.6
Exposure 1/640s

And two more video examples

Verdict

The Panasonic Lumix G X Vario PZ 45-175mm f/4-5.6 ASPH. POWER O.I.S. is a good albeit not superb telephoto zoom lens as some might have hoped from its "X" designation. The delivered resolution is decent across the image field and the focal length. The lens suffers from a relatively high degree of lateral CAs - despite two extra low dispersion lenses - which is mainly a problem for Olympus users whereas the auto-correction can cope with this issue on Panasonic cameras.
Distortions are well-controlled and not relevant for most use-cases. Unfortunately this doesn't apply to the vignetting performance of the lens which is visible throughout the zoom range at fully open aperture. That said it's not really an issue anymore from f/8 onward.
The optical image stabilizer is basically a requirement for hand-held photography at such focal length on Panasonic micro-four-thirds cameras. An effective gain of about "2-3 f-stops" seems realistic from what we have seen during actual use.

The AF performance of the lens is excellent. The combination of electric zoom lever and the inner focusing system is certainly helpful with respect to minimizing shake during movie recording - this was one design objective of this lens. The constant physical length across the zoom range is also a differentiator. Please note that cameras with old firmware won't be able to set up accurate focal lengths between 46 and 174mm due to a missing focal length scale. This is certainly not a show-stopper though.

There is much to like about the Panasonic lens - also from a price/performance perspective.

Optical Quality:
Mechanical Quality:
Price/Performance:
      
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