The Hartblei 45mm f3.5 Super Rotator is a tilt-shift lens built by Hartblei in Ukraine for the Contax 645 mount. Unlike its Zeiss autofocus siblings built by Kyocera, the 45mm f3.5 Super Rotator is a manual focus lens based on the optics of the Arsat 45mm f3.5 from the Kiev 88 system. The Super Rotator's defining features are its extensive tilt and shift adjustments, which allow the user to alter the orientation of the optics relative to the film plane. Shift is used extensively in architectural photography, where it gives the ability capture the tops of buildings without tilting the camera upwards, avoiding perspective distortion. In these sample images, we see the comparison between a "standard" image with the lens tilted upwards and a "shifted" image. Full vertical shift was used to keep the doorway upright in the frame with no converging parallels. 

Kyocera built three Zeiss wide-angle optics for the Contax 645 system: the 35mm f3.5 Distagon, the 45mm f2.8 Distagon, and the 55mm f3.5 Distagon. Of these, the Zeiss 45mm f2.8 Distagon is the most versatile, sporting a fast f2.8 max aperture and an equivalent focal length of 28mm. This gives the lens a wide but not dramatically distorted perspective ideal for group or environmental portraiture. The inherent sharpness and resolution of the Zeiss design also makes the 45mm f2.8 Distagon a capable tool for architectural, landscape, and interior photography. While not as celebrated as its legendary sibling the Zeiss 80mm f2 Planar, the 45mm f2.8 Distagon displays the versatility and high optical standards of the Contax 645 system. 

The Zeiss 210mm f4 Sonnar is the second-longest lens in the Contax 645 system, behind only the ultra-rare 350mm f4 Tele-Apotessar. With an equivalent focal length of 130mm in the 35mm format, it is an excellent choice for head-and-shoulders portraiture and other applications that require close cropping and compression. Despite being noticeably longer than other lenses in the Contax 645 system it handles well when mounted, especially with the MP-1 battery grip attached. Autofocus performance, while not as fast as shorter lenses such as the 80mm f2 Planar, is nevertheless effective and can be fine-tuned manually without switching to the manual focus mode. As with all lenses in the Contax 645 system, the Zeiss 210mm f4 Sonnar has all-metal construction that exudes quality and durability. Overall, the Zeiss 210mm f4 Sonnar is a critical addition to any Contax 645 kit. 

The Zeiss 120mm f4 Makro Planar is the only manual focus lens made by Kyocera for the Contax 645 system. As the "Makro" in its name suggests, this lens has a very long focus travel that focuses all the way down to a 1:1 reproduction ratio, meaning that the size of an object recorded on film is the same as the true size of the object. This close-up capability allows the Zeiss 120mm f4 to capture details that most medium format setups can only dream of. The Contax 645's fast and accurate light meter makes automatic exposure compensation for barrel extension at macro distances, allowing the photographer to focus solely on the subject. 

The Contax 645's reputation as one of the finest camera systems for portrait photography rests primarily on the remarkable abilities of one lens -- the Zeiss 80mm f2 Planar. Roughly equivalent to a standard 50mm lens in 35mm format, the Zeiss 80mm f2 combines ultra-shallow depth of field and dramatic bokeh with stunning center sharpness and detail. Autofocus, while slower than modern digital systems, is accurate and allows for fast-paced variation in a subject's pose and expression. Each aspect of the 80mm f2's handling seems carefully considered for portrait work -- for example, instant manual focus override in the autofocus mode gives the ability to use the AF as a quick pre-focus before fine tuning the focus point manually. The Zeiss 80mm f2's fast aperture also allows it to capitalize on the Contax 645's impressive 1/4000 top shutter speed for wide-open portraits even in daylight, Unique imaging capability and carefully-considered ergonomics have made the Contax 645 and Zeiss 80mm f2 constant tools in many wedding photographer's kits, even more than 20 years after the system's introduction. 

The Zeiss 140mm f2.8 Sonnar is a short telephoto lens for the Contax 645 system roughly equivalent to an 85mm lens in 35mm format. This ideal portrait focal length combines with the fast f2.8 aperture to create a powerful tool for selective focus, providing noticeably shallower depth of field than similar lenses such as the popular Zeiss 150mm f4 Sonnar for the Hasselblad V System.