Pentax HD DA 645 28-45mm f/4.5 ED AW SR medium format lens leaks online

Pentax-HD-DA-645-28-45mm-f4.5-ED-AW-SR-medium-format-lens
The previously rumored Pentax HD DA 645 28-45mm f/4.5 ED AW SR wide-angle medium format zoom lens was briefly listed on B&H's website. The page is now removed, but you can still find the cashed version. Here are the lens specifications:

  • Aperture range from f/4.5 to f/32
  • Pentax 645AF2 Mount
  • 22-35.5mm (35mm Equivalent)
  • Aperture Range: f/4.5 to f/32
  • Extra-Low Dispersion Elements
  • DC AF Motor & Quick-Shift Focus System
  • Super Protect, HD & Aero Bright Coatings
  • Dustproof and Weather-Resistant
  • Nine Blade Circular Diaphragm
  • Filter Thread: 82mm
  • Pentax 645AF2 mount for full electronic aperture control and autofocus with an internal DC motor
  • Lens construction features 17 elements in 12 groups
  • Maximum magnification of 0.21x
  • Built-in shake reduction technology provides about 3.5 stops of image stabilization
  • Nine rounded diaphragm blades provide a circular aperture from f/4.5-6.3 at 28mm and from f/4.5-8 at 45mm
  • Minimum focusing distance of 1.3'
Focal Length 28 - 45 mm
Aperture Maximum: f/4.5
Minimum: f/32
Camera Mount Pentax 645
Angle of View @ Infinity 89° - 63°
Minimum Focus Distance 1.31' (.4 m)
Diaphragm Blades 9
Elements/Groups 17/12
Magnification 0.21x
DOF Scale No
Distance Scale Yes
Autofocus Yes
Tripod Collar No
Movements None
Filter Thread Front: 82 mm
Weight 3.24 lb (1.47 kg)
Dimensions Approx. 3.90 x 5.96" (99 x 151.5 mm)

Via Digicame-info

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