50mm f/2 Summicron-M IV

• Leica Order No. - 11819, 11826 - 11825, 11816 11624/ LLC - 123

• Era - 1979-Current

• Variants - Black Serial Nos. 2,974,251 to ? - Chrome Serial Nos. 500 Titanium Serial Nos. - Coded after Serial No. -

• Lens mount - Leica M quick-change bayonet

• Number of lenses/groups - 6/4

• Focusing range - 0.7 m / 2.3 ft < ∞

• Aperture - 2 > 16 - with clickstops (including half values), manual diaphragm

• Smallest object field/Largest reproduction ratio - 277 mm x 416 mm / 1:11.5

• Angle of view (diagonal, horizontal, vertical) - 47°, 40°, 27°

• Position of entrance pupil - 25.1 mm (related to the first lens surface in light direction)

• Scales - Combined meter/feet graduation

• Filter mount/Lens hood - Internal thread for screw-in filters size E39 / built-in, telescopic

• Accessories -

• Viewfinder - Camera viewfinder

• Materials - Anodized aluminum and optical glass / Chrome plated brass and optical glass

• Focal length - 52.3 mm / 2 in

• Length to bayonet flange - 43.5 mm / 1.7 in

• Largest diameter - 53 mm / 2.1 in

• Weight - approx. 240 g - 8.5 oz / 335 g - 11.8 oz (black anodized- / silver chrome finish)

• Inscription - LEICA SUMMICRON-M 1:2/50 E39 (Serial No.)

• On the street - $US 1,795.00