Lens finder
Pentax smc DA 17-70mm f/4 AL (IF) SDM
 |
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. |
Pentax smc DA 17-70mm f/4 AL (IF) SDM Specification
| Available mount(s) | Pentax K |
| Application(s) | Portrait, Landscape, Architecture |
| Category(s) | Standard zoom |
| Multiplier | 1.5× |
| Stabilizer | no |
| Focal length | 17 - 70 mm (4.10× zoom) |
| Lens construction | 17 elements in 12 groups |
| Angle of view |
35mm: N/A digital: 79-23° |
| Number of blades | 7 |
| Maximum aperture | wide: f/4 tele: f/4 |
| Minimum aperture | wide: f/22 tele: N/A |
| Minimum focusing distance | 28 cm |
| Magnification | 0.31× |
| Filter size | 67 mm |
| Size | ∅ 75 × 93.5 mm |
| Weight | 485 g |
| Notes |
|
| AF speed | N/A |
| AF sound | |
| Internal focusing | yes |
| Internal zoom | N/A |
| Fix front lens | N/A |
| Mount type | metal |
| Weather sealed | N/A |
| Drop in filter | N/A |
| Ultrasonic AF | yes |
| Stepping motor AF | no |
| APS-C sized circle | N/A |
| Low dispersion lens element | N/A |
| Hard case | N/A |
| Soft case | S90-140 (not included) |
| Lens hood | PH-RBM67mm (included) |
| Tripod adapter | N/A |
Pentax smc DA 17-70mm f/4 AL (IF) SDM Reviews
Other reviews
- Pentax smc DA 17-70mm f/4 AL (IF) SDM review at www.slrgear.com (English)
Pentax smc DA 17-70mm f/4 AL (IF) SDM in the news
- Tamron SP AF60mm f/2.0 Di-II Macro
- Nikkor AF-S DX 85mm f/3.5G ED Micro
- Carl Zeiss Distagon T* 35mm f/2.0 ZF
- Sony SAL2875 28-75mm f/2.8 SAM
- Carl Zeiss Distagon T* 28mm f/2 with EF mount
- Tamron SP AF17-50mm f/2.8 XR Di II VC LD Aspherical
- Carl Zeiss Distagon T* 2,8/21 for EF mount
- Carl Zeiss Distagon T* 3,5/18 ZE
- SIGMA 70-300mm F4-5.6 DG OS
- Nikkor AF-S 16-35mm f/4 G ED VR