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Pentax smc D FA 645 25 mm f/4 AL[IF] SDM AW
This is a medium-format prime lens for Pentax 645, covering 25 mm and a maximum aperture of f/4. Released in 2011, it weighs 1070 g and is weather-sealed. That combination suits street and travel photography.
It is a prime lens designed for medium format cameras. This wide-to-normal prime lens features a f/4 maximum aperture, making it ideal for landscape, street, documentary. The optical design incorporates 12 elements / 8 groups, ensuring sharp image quality and minimal distortion. Despite its robust professional construction, the lens delivers exceptional optical performance.
- f/4
- Aperture
- 25mm
- Focal
- 1070 g
- Weight
- Feb 2011
- Released
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Landscape
DocumentarySpecification
- Focal length
- 25 mm
- Maximum aperture
- f/4
- Minimum aperture
- f/32
- Number of diaphragm blades
- 9
- Optical construction
- 12 elements / 8 groups
- Minimum focusing distance
- 0.4 m (15.75 inches)
- Filter size
- 40.5 mm
- Lens mount
- Pentax 645
- Dimensions
- 90 x 140 mm
- Weight
- 1070 g (37.74 oz)
- Lens type
- Prime lens
- Image stabilization
- No
- Max Format size
- Medium format
- Weather sealing
- Yes
- Usage
- Landscape, Street, Documentary
Wide open at 2 m, background blur ≈ 0.2% of the frame width
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