Pentax FA 645 55-110mm f/5.6 Lens
- Pentax 645 Mount
- 43.5-87mm (35mm Equivalent)
- Aperture Range: f/5.6-45
- Extra-Low Dispersion Glass Elements
- Super Multi Coating
- Construction: 9 Elements / 9 Groups
- Minimum Focus Distance: 2.6′
- Eight Blade Diaphragm
- Front Filter Thread: 82mm
The Pentax smc FA 645 55-110mm f/5.6 Lens is a standard zoom lens designed for Pentax 645 mount medium format cameras, both film and digital. It is designed for general shooting and has a standard to medium telephoto field of view with a 35mm equivalent focal length of 43.5-87mm. Also, it has a constant minimum aperture of f/5.6 and can stop down to f/45.
The lens design features 9 elements in 9 groups which feature a Super Multi Coating that prevents ghosting and flaring. For optimal image quality, the 55-110mm uses extra-low dispersion glass elements to prevent chromatic aberrations and maximize contrast and sharpness. Also, the lens will focus as close as 2.6′.
For smooth out-of-focus areas, the lens has an eight blade aperture diaphragm. There is also an 82mm front filter thread.
- 35mm focal length equivalent of 43.5-87mm
- Aperture range of f/5.6 to f/45
- Angle of view of 53° to 28° which equates to 43° to 22.5° on Pentax 645 digital cameras
- Lens construction of 9 elements in 9 groups
- Super Multi Coating increases light transmission as well as helps to eliminate ghosting and flaring
- Extra low-dispersion glass elements help to minimize chromatic aberrations and maximize sharpness
- Minimum focusing distance is 2.6′
- Accepts 82mm threaded filters
- Works with both film and digital formats
- Aperture ring and focusing distance scale
- Eight diaphragm blades for smooth out-of-focus areas
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