According to DxOMark test, they find the lens is a good performer, with low vignetting and very low lateral chromatic aberration.
Panasonic 30mm f/2.8 Lens Test Results
Panasonic LUMIX G MACRO 30mm F2.8 vs. Panasonic Leica DG 45mm F2.8 vs. Olympus M.Zuiko Digital ED 60mm F2.8 Macro
From DxOMark review:
Overall optical performance of the Panasonic is very good, with the somewhat low-ish DxOMark score attributable to the lack of higher-resolution camera models available for testing. Be that as it may, the Panasonic 30mm f2.8 Macro looks promising. Given the build quality and specs, the slight premium isn’t at odds with rival offerings. While it’s a welcome addition to the lineup and an attractive option to the starter-type kit zooms and high-speed normal models, lenses like this remain a somewhat niche market today.
The Panasonic LUMIX G MACRO 30mm f/2.8 ASPH. MEGA O.I.S. is a stabilised macro lens with a maximum reproduction ratio of 1:1.
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|Panasonic Lumix G Macro 30mm / F2.8 ASPH. / Mega O.I.S. Lens||$399||Amazon | Adorama | eBay|