| SMC Pentax-DA 40mm f/2.8 Limited | |
| Key features | |
|---|---|
| Maker: | Pentax |
| Unique features: | Pancake lens |
| Application: | Normal lens |
| Technical data | |
| Type: | Prime |
| Focal length: | 40mm |
| Focal length (35mm equiv.): | 60mm |
| Frame coverage: | APS-C 1.5x |
| Aperture (max/min): | f/2.8 / f/22 |
| Construction: | 4 groups / 5 elements |
| # Diaphragm blades: | 9 |
| Close focus distance: | 15.7 in (0.4 m) |
| Max. magnification: | 0.13x |
| Physical | |
| Max. diameter: | 2.5 in (63 mm) |
| Max. length: | 0.6 in (15 mm) |
| Weight: | 3.2 oz (90g) |
| 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 | |
| Introduced: | 2004 |
| Retail info | |
| MSRP US$ | $499.95 |
The SMC Pentax-DA 40mm f/2.8 Limited lens is a pancake lens for the Pentax K mount. At only 0.6 in (15 mm) long, it is the smallest lens currently made by Pentax. The lens has a 35mm equivalent focal length of 60mm; it is part of the Limited series of high-performance compact prime lenses.