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Pentax smc DA* 60-250mm f/4 ED (IF) SDM
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APS-C 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. 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. 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. Metal mountCheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important. Internal FocusingInternally focusing lenses don't change their size while setting focus. Weather SealedWeather sealed lenses are protected from dust and water. While they are not water proof, these lenses can be used in rain and other humid environments. Some sealings only provide protection against dust or water, not both. Sealing is only available when the lens is used on a similarly weather sealed camera body. 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. |
Pentax smc DA* 60-250mm f/4 ED (IF) SDM Specification
| Available mount(s) | Pentax K |
| Application(s) | Portrait, Sports, Landscape, Wildlife |
| Category(s) | Tele zoom |
| Multiplier | 1.5× |
| Stabilizer | no |
| Focal length | 60 - 250 mm (4.2× zoom) |
| Lens construction | 15 elements in 13 groups |
| Angle of view |
35mm: N/A digital: 26.5-6.5° |
| Number of blades | 9 |
| Maximum aperture | wide: f/4 tele: f/4 |
| Minimum aperture | wide: f/22 tele: f/32 |
| Minimum focusing distance | 110 cm |
| Magnification | 0.15× |
| Filter size | 67 mm |
| Size | ∅ 82 × 167.5 mm |
| Weight | 1040 g |
| Notes |
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| AF speed | N/A |
| AF sound | |
| Internal focusing | yes |
| Internal zoom | N/A |
| Fix front lens | N/A |
| Mount type | metal |
| Weather sealed | yes |
| Drop in filter | no |
| Ultrasonic AF | yes |
| Stepping motor AF | no |
| APS-C sized circle | yes |
| Low dispersion lens element | N/A |
| Hard case | N/A |
| Soft case | N/A |
| Lens hood | N/A |
| Tripod adapter | N/A |
Pentax smc DA* 60-250mm f/4 ED (IF) SDM Reviews
Other reviews
- Pentax smc DA* 60-250mm f/4 ED (IF) SDM review at www.slrgear.com (English)
- Pentax smc DA* 60-250mm f/4 ED (IF) SDM review at www.ephotozine.com (English)
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