This single-focus standard lens features the latest, high-grade, multi-layer HD Coating, which effectively reduces the generation of flare and ghost image to deliver clear, high-contrast images of the subject, even in demanding lighting conditions such as backlighting.
Designed as an interchangeable lens for use with PENTAX K-mount digital SLR cameras, its larger-diameter optics cover the full-frame image circle of K-mount cameras, despite its compact dimensions. When mounted on a PENTAX digital SLR camera body, it can be used as a 50mm standard lens in the full-frame format, or a 76.5mm medium-telephoto lens in the APS-C format.
With a full-frame camera, it provides an angle of view close to that of the human visual field, making it an ideal choice for a wide range of applications, such as snapshots, scenic images and portraiture.
Specifications:
| Focal Length |
50mm Equivalent to 76.5mm in 35mm format (when attached to PENTAX APS-C size DSLR cameras) |
| Maximum Aperture |
F1.4 |
| Minimum Aperture |
F22 |
| Lens Construction |
7 elements in 6 groups |
| Angle of View (Diagonal) |
47° (when attached to PENTAX 35mm full-frame SLR cameras) 31.5° (when attached to PENTAX APS-C size DSLR cameras) |
| Mount |
KAF |
| Minimum Focusing Distance |
0.45m (1.48ft.) |
| Maximum Magnification |
0.15x |
| Filter Diameter |
49mm |
| Diaphragm Control |
Fully automatic |
| Number of Diaphragm Blades |
8 Rounded diaphragm (50mm:F1.4-F2.8) |
| Aperture Ring |
Equipped |
| Tripod Mount |
N/A |
| Lens Hood |
RH-RC49, PH-RA49 (not included) |
| Lens Cap |
O-LC49 (included) |
| Lens Case |
S70-70 (not included) |
| Maximum Diameter x Length |
approx. 65mm x 40.5mm (approx. 2.6in. x 1.6in.) |
| Weight |
approx. 223g (approx. 7.9oz.) |
| Temperature |
-10°C~40°C (14°F~104°F) |
| Humidity |
85% or less (no condensation) |
| Included Accessories |
Lens Cap O-LC49, Lens Mount Cap K |
| Others |
HD Coating, SP(Super Protect) Coating
|
Compatible Converters:
A1.4X-S, A2X-S, HD PENTAX-DA AF REAR CONVERTER 1.4x AW*
* The maximum aperture is set at F2.4
* When mounted on K-1 series, the image size is automatically cropped to the APS-C size.
* Please apply the latest updater of Digital Camera Utility 5 when you handle images taken by this lens on Digital Camera Utility 5. In case the software version is old, the name of this lens can not be displayed correctly. Digital Utility 4 and below can not display the name of this lens correctly.