This 250mm lens unit for the SW 617 is produced by renowned German brand, Schneider, which prides itself on its state-of-the-art imaging capability. In addition, Horseman has independently developed a dedicated helical mount to produce high accuracy in visual measurements. The lens comes with a distance scale and a depth-of-field scale.

• Schneider Tele Xenar 250mm f/5.6

• 5 : 5

• 190mmφ

• 26.25 ft (8 m)

• 82mmφ

• 4.25 lbs (1930 g)