Perspective-control lenses are more useful than ever: Mount one on a high-res D-SLR and you access not just view camera-style image-control movements but also a good measure of the big camera's image quality, with much greater ease of use. This manual-focus PC lens is optically and mechanically similar to the 85mm PC Micro-Nikkor released a few years ago, but it offers one very important improvement: automatic diaphragm control. If you're shooting with Nikon D3X, D3, D700, or D300 D-SLRs, you no longer have to manually stop the lens down before shooting. (That step was easy to forget, and its omission could result in serious overexposure.) As before, this lens combines its tilts and shifts with macro focusing. Aside from exacting control over sharpness and linear perspective, that combination lends itself to interesting out-of-focus effects not just with architectural subjects but in still lifes too. Sort of like a very expensive Lensbaby! About $1,750.