Pentax smc FA 645 80-160mm f/4.5 Lens


  • Pentax 645 Mount
  • 63-126.5mm (35mm Equivalent)
  • Aperture Range: f/4.5-32
  • Extra-Low Dispersion Glass Elements
  • Super Multi Coating
  • Construction: 11 Elements / 10 Groups
  • Minimum Focus Distance: 3.3′
  • Eight Blade Diaphragm
  • Front Filter Thread: 77mm
  • Petal-Shaped Lens Hood

Special Order - Available in 2 to 4 weeks - Depending on availability from manufacturer

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The Pentax smc FA 645 80-160mm f/4.5 Lens is a medium telephoto zoom lens with a 35mm equivalent focal length of 63-126.5mm and a maximum aperture of f/4.5. The autofocus lens can stop down to f/32 and features multiple types of low dispersion glass elements throughout its 11 element and 10 group construction. This is benefited by the use of a Super Multi Coating that helps eliminate flare and ghosting.

The lens can focus as close as 3.3′ during use and has an eight blade diaphragm to help create smooth out-of-focus areas. Also, it can accept 77mm filters via a front thread and includes a lens hood. The 80-160mm also features the ability to turn the front of the lens while the hood is attached for easily adjusting your filters.

  • The front of the lens can be rotated while the hood is attached allowing for easy rotation of filters like circular polarizers
  • 35mm focal length equivalent of 63-126.5mm
  • Aperture range of f/4.5 to f/32
  • Angle of view of 47° to 21.5° which equates to 38° to 17.5° on Pentax 645 digital cameras
  • Lens construction of 11 elements in 10 groups
  • Extraordinary and extra-low dispersion glass elements help to minimize chromatic aberrations and maximize sharpness
  • Accepts 77mm threaded filters
  • Minimum focusing distance throughout the zoom range is 3.3′
  • Super Multi Coating increases light transmission as well as helps to eliminate ghosting and flaring
  • Works with both film and digital formats
  • Aperture ring and focusing distance scale
  • Eight diaphragm blades for smooth out-of-focus areas
Package Weight 3.65 lbs
Package Dimensions 9.134 x 6.378 x 6.299 in

Maximum: f/4.5 Minimum: f/32

Package Weight

3.65 lb


Approx. 3.35 x 5.14″ (85 x 130.5 mm)





Distance Scale


Box Dimensions (LxWxH)

9.134 x 6.378 x 6.299″


2.22 lb (1010 g)

Tripod Collar


Angle of View @ Infinity

47° – 21.5°



Camera Mount

Pentax 645

Diaphragm Blades


Minimum Focus Distance

3.28′ (1 m)

Filter Thread

Front: 77 mm

Focal Length

80 – 160 mm

Lens Type



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