Lens finder
Pentax smc A 400mm f/5.6
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Full frame sized imageLenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either. No Ultrasonic AFLenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses. No stepping motor AFLenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses. No Low Dispersion lens element is usedLow Dispersion lens elements help to reduce chromatic aberration. Not stabilizedImage stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule. No drop-in filter supportDrop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type. |
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The PENTAX smc P-A* 400mm F5.6 telephoto lens is a manual focus lens with automatic aperture. It is an excellent general-use lens ideal for sports and wildlife photography. Like all PENTAX lenses, it is treated with the acclaimed smc coating for maximum light transmission, sharp definition, and high contrast while minimizing flare and ghost imaging.
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Pentax smc A 400mm f/5.6 Specification
| Available mount(s) | Pentax K |
| Application(s) | Wildlife |
| Category(s) | Super telephoto |
| Multiplier | 1× |
| Stabilizer | no |
| Focal length | 400 mm (prime) |
| Lens construction | 7 elements in 6 groups |
| Angle of view |
35mm: 6.2° digital: N/A |
| Number of blades | N/A |
| Maximum aperture | f/5.6 |
| Minimum aperture | f/45 |
| Minimum focusing distance | 275 cm |
| Magnification | N/A |
| Filter size | 77 mm |
| Size | ∅ 84 × 277 mm |
| Weight | 1240 g |
| Notes |
built-in hood |
| AF speed | N/A |
| AF sound | |
| Internal focusing | N/A |
| Internal zoom | N/A |
| Fix front lens | N/A |
| Mount type | N/A |
| Weather sealed | N/A |
| Drop in filter | no |
| Ultrasonic AF | no |
| Stepping motor AF | no |
| APS-C sized circle | no |
| Low dispersion lens element | no |
| Hard case | N/A |
| Soft case | N/A |
| Lens hood | N/A |
| Tripod adapter | N/A |
| Discontinued | yes |
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