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Maker | Pentax |
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Technical data | |
Type | Prime |
Focal length | 40mm |
Focal length (35mm equiv.) | 60mm |
Crop factor | 1.5 |
Aperture (max/min) | f/2.8 / f/22 |
Close focus distance | 15.7 inches (0.40 m) |
Max. magnification | 0.13x |
Diaphragm blades | 9 |
Construction | 5 elements in 4 groups |
Features | |
Manual focus override | ![]() |
Unique features | Pancake lens |
Application | Normal lens |
Physical | |
Max. length | 0.6 inches (15 mm) |
Diameter | 2.5 inches (64 mm) |
Weight | 3.2 oz (91 g) |
Filter diameter | 49mm (30.5mm on hood) |
Accessories | |
Lens hood | MH-RC 49mm |
Case | DA 40mm Lens Soft Case |
Angle of view | |
Diagonal | 39° |
History | |
Introduction | 2004 |
Retail info | |
MSRP | $499.95 USD |
The smc Pentax-DA 40mm f/2.8 Limited is a pancake lens for the Pentax K-mount. At only 0.6 inches (15 mm) long, it was the smallest lens made by Pentax until the 40mm XS lens was introduced. The lens has a 35mm equivalent focal length of 60mm; it is part of the Limited series of high-performance compact lenses. In August 2013 it was re-released with improved lens coatings and rounded aperture blades as HD Pentax-DA 40mm f/2.8 Limited.[1]
The SMC Pentax-DA 40mm f/2.8 XS is an even thinner version of the SMC DA 40mm lens, at 9.1 millimetres (0.36 in) thick, released by Pentax on February 2, 2012. It features an aesthetic design by Marc Newson[2][3] to match the Pentax K-01. It is currently one of the thinnest autofocus pancake lenses ever made.