Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR
Product Description
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).
Focal Length | 55mm (35mm Equivalent Focal Length: 82.5mm) |
Maximum Aperture | f/1.4 |
Minimum Aperture | f/22 |
Pinhole Diameter | |
Lens Mount | Pentax K |
Lens Mount | |
Lens Mount | |
Format Compatibility | APS-C |
Angle of View | 28.6� |
Area of Coverage | |
Tilt-Shift | |
Minimum Focus Distance | 1.48' / 45 cm |
Maximum Magnification | 0.17x |
Macro Reproduction Ratio | |
Optical Design | 9 Elements in 8 Groups |
Diaphragm Blades | 9 |
Focus Type | Autofocus |
Image Stabilization | None |
Leaf Shutter | |
Tripod Collar | |
Filter Size | 58 mm (Front) |
Dimensions (� x L) | 2.8 x 2.6" / 7.11 x 6.6 cm |
Length at Maximum Extension | |
Weight | 13.23 oz / 375 g |