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The smc PENTAX-DA15mm F4 ED AL Limited is a new ultra-wide angle lens for Pentax digital SLR cameras. The lens offers the equivalent to a 23mm angle of view in the 35mm format, making it ideal for architecture and landscape photography.
Focal Length 15mm
(Equivalent to 23mm in 35mm format)
Minimum Aperture F22
Lens Construction 8 elements in 6 groups
Angle of View 86° (with PENTAX D-SLR camera body)
Minimum Focusing Distance 0.18m (0.59 ft.)
Maximum Magnification 0.15X
Filter Diameter 49mm
Diaphragm Control Fully Automatic
Number of Diaphragm Blades 7
Lens aperture ring None
Tripod adapter None
Lens Hood Built-in Flower-Shaped Lens Hood
Lens Cap Screw-in Lens Cap
Lens Case Lens Case DA-70
Maximum Diameter & Minimum Length 63mm x 39.5mm (2.5 inch x 1.58 inch)
Weight 212g / 7.47 oz.
Remarks * Quick-Shift Focus System