Hoewel de Panasonic Lumix G X VARIO PZ 45-175 mm / F4.0-5.6 ASPH. / POWER O.I.S. een groot zoombereik heeft van standaard tot tele, is de Lumix GX lens toch bijzonder compact. Met zijn lengte van ongeveer 90mm en gewicht van 210 gram levert deze Panasonic lens optimale mobiliteit. De beperkte lengte werd bereikt door de toepassing van 2 asferische lenzen. Met de zoomknop kan gemakkelijk stabiel worden gezoomd, zelfs als er opnames worden gemaakt van een bewegend onderwerp.
This new Panasonic lens actually shows a bit more chromatic aberration compared to its predecessor, although it's only a minor difference, and overall CA is very well-controlled. The amount of CA varies up and down throughout the zoom range, and the new model seems to show the same varied behavior that we saw with the older one. At 14mm and 140mm, we saw a larger difference in average CA (CA visible throughout in the image) and the maximum CA, seen in the corners. At most focal lengths, CA increases slightly as you stop down. Interestingly, at 69-70mm, we saw very low CA, both average and maximum values throughout all apertures.
The Panasonic G3 is compatible with any Micro Four Thirds lens, with Panasonic, Olympus, and third parties together offering approximately thirty lens models at the time of writing (September 2011). Panasonic has dubbed the bulk of their Micro Four Thirds lenses "LUMIX G," and the company has released (or is on the verge of releasing) 14 models to date. Eight of these are zooms, as identified by their Vario branding, while six are primes -- among these, one macro and one 3D lens. Of the Panasonic lenses on offer, two are available in a kit along with the G3. Both with-lens kits include the 14-42 mm zoom, and one adds the 45-200mm zoom.
In some cases, however, there is something to be said for brand loyalty. Until recently, Panasonic cameras didn’t come with built-in image stabilization, the automated feature that counteracts unsteady hands to produce sharp images. Panasonic instead puts that technology in many—but not all—of its lenses. Olympus, on the other hand, has long offered image stabilization in its camera bodies. Their lenses, therefore, typically omit this feature. So if you own a Panasonic camera that predates the GX7/GX8-series models and want image stabilization, you’re usually far better off with a Panasonic lens. And though its latest cameras have image stabilization built-in, Panasonic has designed the cameras to work in combination with lens-based stabilization for what the company claims are improved results over using either system on its own.