Like a film SLR on steroids, the Pentax 6×7 can only be described as being ginormous. The upside is beautiful large 6×7 negatives, but the obvious downside is the sheer size and weight of the camera and lenses. There were three different models, 6×7, 67, and the 67ii. They all look very much the same, however, incremental improvements were added along the way to the viewfinder, metering, shutter, aperture priority and film transport. The only model to really avoid is the first 6×7 model without the mirror lock-up feature (subsequent 6×7 models designated MU had the mirror lock-up), as there is a tremendous mirror/shutter thunk. It can be used handheld with speeds at 1/250 or higher, but for critically sharp images you will want a tripod. Some photographers even hang a camera pack or something heavy from the underside of their tripod to help reduce camera shake. I remember reading a Luminous Landscape article where the author suggested a bungee cord between the underside of the tripod and his foot to further stabilize the camera and tripod. Many fantastic lenses are available, I particularly liked the 45mm f4 for landscapes, the very fast 105mm f2.4 for portraits and general purpose, but my favourite was the very small 90mm f2.8 as a walk around lens. Another downside is the 1/60 second flash sync, although there are some lenses with leaf shutters like a 165mm portrait lens. A great fun camera that produces wonderful images, but in the end it was just too back breaking an exercise to shoot with this kit. My 4×5 Shen-Hao field camera plus lenses was actually lighter than the Pentax 6×7! To purchase click on: Pentax 6×7, Pentax 67, and Pentax 67ii.