The Pentax 55mm f/1.4 DA* SDM Autofocus Lens is a compact and bright short-telephoto lens of the highest order, made exclusively for Pentax digital SLR cameras. In a stocky housing ready for harsh conditions, you'll get a bright f/1.4 aperture-worlds away from the experience you're used to with more common zooms-that opens up new creative doors to you as a photographer.
This lens was born to shoot between f/1.4 and f/2.8, and comes with a 9-bladed aperture diaphragm which shows up as perfectly round when you stay between f/1.4-2.8. Shoot dramatic portraits with bright point light sources behind the subject, and you'll be dazzled with lovely diffuse, circular out-of-focus highlights that make everybody look better. Beyond portraits, this lens works well any time you would use a moderate telephoto focal length.
The focusing system of this lens is SDM only; there is no screw on the rear of the lens barrel to have the AF driven by a body-based motor. This allows the lens to move incredibly quick, driven by an internal motor and with the Quick-Shift system providing manual override capacity to you any time you want it with no buttons to switch; but you'll need a Pentax body which allows SDM autofocus (all current Pentax bodies support SDM, but the *IST series does not).
Note! Does NOT provide autofocus upon non-SDM-enabled Pentax cameras.
Features
- Brilliantly-sharp portrait lens which gathers plenty of light
- Completely-rounded aperture diaphragm from f/1.4-2.8 for beautiful out-of-focus highlights
- Speedy SDM autofocus motor provides fast, silent response with Quick-Shift full-time manual override
- Pentax's unique SP water and dirt-repelling coating on both external surfaces Pentax's "Aero Bright" internal lens yields high transmissivity and reduced flare
- Dust and moisture-resistant housing
- Essentially equivalent to an 85mm f/1.4 lens upon 35mm SLR cameras
Specifications
| Construction | 8 Groups/ 9 Elements |
| Angle of view | 28.6 degrees (w/PENTAX DSLR) |
| F stop range | f/1.4-22 |
| Closest Focusing Distance | 0.45m (1.5 ft.) |
| Maximum Magnification | 0.173X |
| Filter Size | 58mm |
| Dimensions (Length x Diameter) | 2.6" x 2.8" (66.0 x 70.5mm) |
| Weight | 13.2 oz. (375g) |
| Notes | Quick-shift focus, SP (Super Protect) coating, Rounded aperture (F1.4-2.8), Dustproof and weather resistant, SDM supersonic autofocus motor, SDM-only autofocus (manual focus on non-SDM bodies) |
Includes
- Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR
- PH-RBH Lens Hood for SMC DA* 55mm f/1.4 SDM Lens
- 58mm Snap-On Lens Cap
- Rear Lens Cap (B) for Bayonet Mount Lenses
- Lens Case S90-100 (Soft)
