Panasonic Lumix DMC-G1 Digital Camera

For some people, the biggest obstacles to buying a are the bulk and weight--who wants to carry a couple pounds of camera around everywhere? The Panasonic Lumix DMC-G1 may provide a solution: It's smaller and lighter than any digital SLR, and it has features that will make point-and-shoot users feel comfortable. But it's expensive compared with low-end SLRs, and in my hands-on tests it didn't produce the same image quality as true SLRs do.

I say "true SLRs" because, technically, the DMC-G1 isn't one. It has no mirror (the "reflex" in "single-lens reflex") and no mechanism to reflect the image captured by the lens through a prism and then to an eye-level viewfinder. Instead, it relies on a 3-inch wide-screen LCD and an electronic eye-level viewfinder.

Though you do get a live view of your subject through either the LCD or the viewfinder, you're always looking at pixels, rather than an image reflected through glass. As good as the eye-level viewfinder is for its type, I disliked using it, especially in full sunlight, because I found it hard to see while I was squinting. At least the DMC-G1's LCD refreshes at 60 frames per second instead of the more standard 30 fps, so in better lighting it gives you a really good view of your subject.

The DMC-G1's design uses a smaller sensor than most SLRs do, which allows for a more compact camera body and smaller lenses. This model is noticeably lighter than other SLRs, but it's still quite bulky: It's more like the size of the models on our , which rates cameras that have manual exposure settings but aren't SLRs. And I found that the DMC-G1 is only about a quarter-inch shorter and just a half-inch thinner than the digital SLR I used for comparison (when both cameras had lenses attached). I had trouble stowing either camera in tight spots, and I certainly wouldn't take either one to a dinner party, for example. Nevertheless, the G1's lighter weight and smaller size make it easier to hold at awkward angles than most SLRs.

The camera comes with a 14mm-45mm lens, which provides the same as a 28mm-90mm focal length in 35mm-equivalent terms. Micro Four Thirds is a new design from the same companies that back the Four Thirds system (including Fujifilm, Kodak, Olympus, Panasonic, and Sigma).

At this time, the only other available lens is a 45mm-200mm lens, which goes for US$350. If you purchase a $170 adapter, you can use Four Thirds lenses (note the lack of "Micro"). The Micro Four Thirds lenses do have true, seven-blade diaphragms, so they should function as any SLR lens does; however, because they are significantly smaller, they have much less glass, and that should have an effect on their ability to bring in light. The lens aperture on the kit lens is f/3.5 at its widest setting and f/5.6 at its longest setting; those are typical ratings for low-end SLRs, but the lens still isn't very flexible.