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Nikon & Pentax SLR lenses

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		Reflex lens mount Nikon AI-s Pentax K
40mm f2.0 Ultron SL II lens The 40/2.0 Ultron SL II lens is a new pancake lens from Voigtlander.  This version will be available in Pentax K (PK) bayonet mount and Nikon AI-s mount, which has the added attraction of CPU for electronic meter coupling and full multi mode operation with AF and Digital SLR cameras. The 40/2 Ultron comes with a dome type lens hood and an accessory close up lens to give  a minimum focus distance of 25cm. The rear element is made from ultra high refractive index glass, with both its surfaces aspherical. On a DSLR with an APS C sized sensor, it is very useful a short portrait lens (= 60mm in 35mm terms)     Specifications: Lens mount:  NAI-s - Nikon AI-s Bayonet (with CPU) PK - Pentax K Bayonet Lens construction: 6 elements in 5 groups Minimum Focus: 0.38m [Focus range 0.45-0.25m with Close-Up Lens] Minimum Aperture: f22 Length: 24.5mm (Nikon) Diameter: 63mm Weight: 200g Hood: Included Filter Size: 52mm