Pentax tonight jumped into competition against the Nikon D40 and Canon Rebel XS with the launch of its previously leaked K-m digital SLR. Although equipped with the full-size sensor and detachable lens system of an SLR, the 10.2-megapixel camera is consciously designed to acclimate first-time users with a smaller body and simplified controls that resemble those of a point-and-shoot. Settings inf
