aberrations, and are physically more compact than other wide-angle lenses of similar focal lengths. 80 mm f/4.5 (for 5×7 in) 110 mm f/5.6 (for 5x7 in) 150 mm f/5.6 (for 8×10 in) 210 mm f/5.6 (for 11×14 in) Xenar Schneider's inexpensive, classic Xenar asymmetrical, anastigmatic, 4-element, 3-group lens design was introduced in 1919, and is largely unchanged from the original Zeiss Tessar formula. They feature an angle of coverage of 60–62°. 75mm f/3.5 (for 6×6 cm) 90mm f/4.5 (for 6×9 cm) 90mm f/5.5 100mm f/3.5 105mm f/2.9 105mm f/3.5 105mm f/3.8 105mm f/4.5 105mm f/5.5 120mm f/3.5 120mm f/4.5 120mm f/5.5 135mm f/3.5 (for 4×5") 135mm f/3.8 135mm f/4.5 135mm f/4.7 135mm f/5.5 150mm f/3.5 150mm f/4.5 150mm f/5.5 165mm f/3.5 165mm f/4.5 165mm f/5.5 180mm f/3.5 180mm f/4.5 180mm f/5.5 195mm f/4.5 (for 5×7") 195mm f/5.5 210mm f/3.5 210mm f/4.5 210mm f/5.5 210mm f/6.1 240mm f/3.5 240mm f/4.5 270mm f/4.5 300mm f/3.5 (for 8×10") 300mm f/4.5 300mm f/5.6 360mm f/4.5 420mm f/4.5 (for 11×14") 480mm f/4.5 (for 14×17") Aero-Xenar 250mm f/4.5 (for 4.5x6") 300mm f/4.5 (for 5x7") 500mm f/4.5 (for 5x12") Tele-Xenar An inexpensive 4-element, 2-group telephoto lens design featuring 35° of coverage. The 1000 mm lenses, by comparison, give only an 18° angle of coverage, but require even less focal distance than other telephoto designs (slightly more than 1/2 the effective focal length, as opposed to about 2/3 for a normal tele lens). 180mm f/5.5 180mm f/5.6 240mm f/5.5 270mm f/5.5 300mm f/5.5 360mm f/5.5 (for 4x5") 500mm f/5.5 1000mm f/8 1000mm f/10 Apo-Tele-Xenar These are apochromatic telephoto lenses using a 5-element variation of the Tele-Xenar design. They can be used on subjects as close as 2 meters without a loss of resolution, and are painted a non-reflective flat grey to reduce thermal absorption and expansion under sunlight or hot studio lights. The 400 mm Compact model is half the length and 70% the weight of the normal Apo-Tele-Xenar 400 mm lens. The 350 mm compact model is actually not a tele-design but a dialyte; however it is called the Apo Tele Xenar 350 Compact. 350mm f/11 Compact (for up to 8x10 in) 400 mm f/5.6 (for 5×7 in) 400 mm f/5.6 Compact 800 mm f/12 (for 8×10 in) Xenotar A 5-element, 4-group design, giving a 60° angle of coverage. These are fast lenses compared to other lens designs of similar focal length, but with somewhat less coverage.