AFFORDABLEClockwise from top left, the Samsung NX100, the Sony Alpha NEX-3, the Panasonic Lumix DMC-GF1 and the Olympus Pen E-PL1. By RIK FAIRLIE – NY Times FOR several years, camera makers have trained their engineering expertise on the sweet spot between compact point-and-shoot cameras and chunky (yet capable) D.S.L.R.’s. An ideal combination would involve a…









