The Linhof Technorama Apo-Symmar L 180mm f/5.6 Lens Unit is a normal-length lens, providing a 50.6° angle of view, which is specifically designed for use with the Linhof 617s III Panoramic Camera. The lens is housed within a dedicated lens unit that allows for simple attachment to the 617s III camera body and also incorporates a range of functional elements that pair well with the handheld design of the system. A helical focusing mount is integrated into the lens unit to allow for one-handed, bellows-free, focusing as close as 7.2'. The lens is set in a standard Copal #1 shutter for shutter speeds between 1/400 to 1 sec, as well as B and T settings, and has an attached cable release with soft pressure shutter release. The shutter is uncoupled from the film winding mechanism and must be cocked prior to each exposure.
When in use, a corresponding accessory viewfinder can be used for precise image composition and the lens' distance scales are demarcated in imperial and metric measurements for focusing control.