The following sample shots were taken with a Panasonic G1 and RAW-converted via CaptureOne 5.1. Please note that some of the images were shot with the camera's 3:2 mode, which simply crops the image to achieve the desired aspect ratio.
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Make
Panasonic
Model
DMC-G1
ISO Speed
200
Focal Length
7.0mm
Aperture:
f/8.0
Exposure
1/1600s
Make
Panasonic
Model
DMC-G1
ISO Speed
200
Focal Length
10.0mm
Aperture:
f/5.6
Exposure
1/1000s
Make
Panasonic
Model
DMC-G1
ISO Speed
200
Focal Length
7.0mm
Aperture:
f/7.1
Exposure
1/640s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
10.0mm
Aperture:
f/5.0
Exposure
1/640s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
14.0mm
Aperture:
f/6.3
Exposure
1/640s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
7.0mm
Aperture:
f/6.3
Exposure
1/400s
Make
Panasonic
Model
DMC-G1
ISO Speed
160
Focal Length
10.0mm
Aperture:
f/7.1
Exposure
1/1000s
Make
Panasonic
Model
DMC-G1
ISO Speed
160
Focal Length
7.0mm
Aperture:
f/4.0
Exposure
1/3200s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
14.0mm
Aperture:
f/6.3
Exposure
1/200s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
14.0mm
Aperture:
f/4.0
Exposure
1/1000s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
14.0mm
Aperture:
f/5.0
Exposure
1/2500s
Make
Panasonic
Model
DMC-G1
ISO Speed
100
Focal Length
13.0mm
Aperture:
f/6.3
Exposure
1/640s
Make
Panasonic
Model
DMC-GF1
ISO Speed
100
Focal Length
14.0mm
Aperture:
f/6.3
Exposure
1/800s
Make
Panasonic
Model
DMC-GF1
ISO Speed
100
Focal Length
7.0mm
Aperture:
f/4.0
Exposure
1/1250s
Make
Panasonic
Model
DMC-GF1
ISO Speed
100
Focal Length
7.0mm
Aperture:
f/7.1
Exposure
1/250s
Make
Panasonic
Model
DMC-GF1
ISO Speed
100
Focal Length
10.0mm
Aperture:
f/5.6
Exposure
1/1000s
Verdict
The Panasonic Lumix G 7-14mm f/4 ASPH is a expensive lens yet its performance characteristic is pretty impressive across most characteristics - at least when taking advantage of the system's auto-correction capabilities. The quality is very high and that's throughout the entire zoom range. The (corrected) distortions as well as lateral CAs are not relevant in field conditions. Vignetting can be visible at f/4 but it's already well controlled from f/5.6 onwards.
The build quality of the lens is very high and leaves nothing to be desired. Same goes for the fast and silent AF drive. At the end of the day there's only one really negative aspect - the pricing. While there's maybe nothing too wrong here from a price/performance perspective it doesn't seem to match the primary target markets of the micro-four-thirds system which is either meant as a secondary system for DSLR users or digicam upgraders. The new Olympus M.Zuiko 9-18mm f/4-5.6 ED is somewhat less capable than the Panasonic lens but significantly cheaper and probably the number one choice for all but die-hard enthusiasts who want the best there is for their system.
Out ratings based on an activated auto-correction: