Haven't found a digital SLR that's caught your eye — or your budget? A new crop of dSLRs is turning heads this week at the Photo Marketing Association (PMA) show in Orlando. The beef most photographers have with digital SLRs has been that their viewfinders could only be used for reviewing, not framing, pics. Olympus and Panasonic have found a way around that with a jointly developed sensor that streams live images to an LCD viewfinder. Olympus will have the first camera that sports the technology, the Evolt E-330 (shown above), a 7.5-megapixel model with a swiveling 2.5-inch viewer. Neat freaks will appreciate the E-330's built-in dust-reduction filter that scoots debris from the image sensor. That'll come in handy when you swap lenses, which you may do often thanks to the open design — the E-330 and Panasonic's DMC-L1 are the first cameras with the Four Thirds System Standard, which, among other things, allows you to swap any lens built to that spec. Also joining the Four Thirds pack: heavy hitters Leica, Kodak, Sigma, Fuji, and Sanyo.

Easy lens swapping made sense to Samsung and Pentax, too, who decided on their own interchangeable-lens system. Samsung's second dSLR, the GX-1L, packs a 6-MP sensor and dumbed-down selections for autofocus, exposure, and scene settings (for those who want SLR flexibility without the pain). Planning ahead, Pentax is showing under glass a 10-MP camera body that's on the drawing board for introduction in time for Christmas. Flexing its pixel pecs further, the company is previewing an 18.6-megapixel medium-format digital SLR for pros. — Rebecca Day