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
Comparable 35mm Equivalent on APS-C Format
Focal Length: 82.5 mm
|Lens type||Prime lens|
|Aperture Range||Maximum: f/1.4
|Max Format sizeAPS-C/DX|
|Camera Mount||Pentax K|
|Lens Format||Pentax Digital (APS-C)|
|Lens mount||Pentax KAF|
|Minimum Focusing Distance||45 cm|
|Angle Of View||28.6|
|Filter Size||58 mm|
|Filter Thread||52 mm|
|Lens Hood||Pentax PH-RBK58|