The build quality of the Sigma DP1 places it squarely in the luxe compact category, alongside competitors such as the Canon PowerShot G9 and the Ricoh GRII. The lenscap fits firmly in place, but pops off easily. Buttons are well damped, and the shutter button has a satisfying tactile sensation that is often missing in economy and mid-range compact cameras. Skinned in black aluminum with boxy, masculine lines, this feels like a serious piece of photographic machinery. That big f/4 eye retracts partially during down time, and expands outwards slightly during shooting. There's no rubberized, curvy handgrip beneath the shutter button, but there are 27 tiny raised semi-spheres (3 rows by 9 columns) on the front and 34 on the back (3 rows by 9 columns, plus 7 more) that'll keep you from slipping your grip. The mode dial spins with good resistance, and the tiny switch for the popup flash works just fine. When activated, the manual focus wheel feels a little loose at first. But once you start thumbing right to your focusing distance on the fly, it feels just about right. The optional accessory viewfinder fits snugly into the hotshoe, as does the compact accessory strobe. It's an either/or proposition here: you cannot use the accessory strobe and optical viewfinder at the same time. It's not a fatal flaw, but it is a design oversight, I think.