Voigtlander 25mm f0.95 Nokton Type II is a slightly revised version of its ultra-fast normal prime for Micro Four Thirds cameras. It gains an aperture ring mechanism which is switchable between clicked and clickless operation, a desirable feature for movie makers (and previously seen in its 17.5mm F0.95 and 42.5mm F0.95 stablemates). The optics are unchanged, but the updated lens is slightly heavier and larger in diameter.
Principal specifications Lens type Prime lens Max Format size FourThirds Focal length 25 mm Image stabilisation No Lens mount Micro Four Thirds Aperture Maximum aperture F0.95 Minimum aperture F16.0 Aperture ring Yes Number of diaphragm blades 10 Aperture notes Switchable stepped / stepless aperture control Optics Elements 11 Groups 8 Focus Minimum focus 0.17 m (6.69 ″ ) Autofocus No Full time manual Yes Distance scale Yes DoF scale Yes Physical Weight 435 g (0.96 lb ) Diameter 61 mm (2.39 ″ ) Length 70 mm (2.76 ″ ) Materials metal barrel, metal mount Sealing No Colour black Filter thread 52 mm Tripod collar No Other Notes Manual focus only