Olympus this morning shot back at Panasonic's GF2 with its own second generation compact, swappable lens camera. The E-PL1s is similar on the outside to the original but has widened the sensitivity from ISO 3,200 to 6,400. A new 14-42mm f3.5-5.6 kit lens has also reclaimed the title of lightest in the category by bringing the total weight of the body and lens to almost exactly one pound.