Designed for use with PENTAX K-mount DSLR cameras, the weather-resistant HD PENTAX-DA 55-300mm F4.5-6.3ED PLM WR RE telephoto zoom lens provides enhanced autofocus (AF) performance and outstanding optical performance in an ultra compact and lightweight package. It provides effective focal lengths between 84.5mm and 460mm when mounted on a PENTAX APS-C format DSLR. Its design enables quiet, high-speed AF operation in still-image shooting, as well as smooth and quiet AF tracking operation during video recording, with minimal noise created by focus and aperture shifts.
| Lens Mount | PENTAX KAF4 mount |
| Focal Length | 55-300mm (84.5 - 460 mm in 35mm format , w/ PENTAX APS-C DSLR) |
| Notes | HD Coating SP (Super Protect) Coating QSF (Quick Shift Focus) ED (Extra-low Dispersion) WR (Weather Resistant) PLM (Pulse Motor) RE (Retractable) |
| Notes | HD coating Super Protect (SP) coating Quick-shift Focus System |
| Angle of View | 29-5.4° |
| Lens Construction(group/elements) | 14 elements in 11 groups |
| Min. Aperture (f) | F22-32 |
| Min. Focusing Distance | 0.95m |
| Max. Magnification | 0.30X |
| Filter Size | 58mm |
| Diameter & Length (mm) | 76.5mm x 89mm |
| Diaphragm control | Electromagnetic Diaphragm Fully Automatic |
| Number of aperture blades | 9 (Rounded Aperture: 55mm: F4-5.9, 300mm: F6.3-13) |
| Model No. | 21277 – Black |
| Weight | 442g w/o hood 471g w/hood |