28mm f/2.8 PC-Super-Angulon-R

• Leica Order No. - 11 812 / LLC - 149

• Era 1988-2009 / Serial Nos. -

• Lens mount - LEICA R-bayonet for LEICA R3 to LEICA R9 with mechanical exposure control and stop-down metering - lens can be shifted from the optical axis by up to 11 mm and rotation in 45° steps to permit perspective corrections in vertical and horizontal formats (62 mm image circle diameter).
• Manufacturer - Schneider-Kreuznach

• Number of lenses/groups - 12 / 10

• Focusing range - 0.3 m / 11.8 in < ∞

• Aperture - 2.8 > 22 - Preset diaphragm with clickstops (including half values), Manual diaphragm

• Smallest object field/Largest reproduction ratio - 146 mm x 219 mm / 1:6

• Angle of view (diagonal, horizontal, vertical) - 73°, 93°

• Displacement - 0 < 11 mm (9.5 diagonally) for correction of converging verticals in architectural photography by twisting a knurled adjustment screw.

• Position of entrance pupil - 25.6 mm / 1 in (related to the first lens surface in light direction)

• Scales - Combined meter/feet graduation

• Filter mount/Lens hood - Internal thread for screw-in type filters EW 67, unset glass filters 74 mm (for special wide-angle filter mounting in lens hood, as well as special polarizing filter 67 EW ) / Separate, screw-in type 12540, also serves as holder for special 67 EW filters

• Accessories - polarizing filter

• Viewfinder - Camera viewfinder

• Materials - Anodized aluminum and optical glass

• Focal length - 29.2 mm / 1.15 in

• Length to bayonet flange - 84 mm / 3.3 in

• Largest diameter - 97 mm / 3.8 in

• Weight - 600 g / 21.1 oz

• Inscription - PC-SUPER-AUGULON-R 1:2.8/28

• On the street - $US 4,195 in 2008