The Pentax *ist-D APS-C digital SLR with Pentax SMC-DA 16-45mm f4 zoom lens compared to the Pentax *ist 35mm film SLR with Pentax SMC-DA 40mm f2.8 LE "Pancake" lens. Although the DA is specified for use on APS-C sensor cameras, it covers the full 35mm frame with no vignetting/edge sharpness issues.