Comparison of Nikon 17-35mm f/2.8D ED-IF AF-S Nikkor and Pentax 11-18mm f/2.8 ED DC AW HD DA* [S]ave
| Attribute |  Nikon 17-35mm f/2.8D ED-IF AF-S Nikkor × |  Pentax 11-18mm f/2.8 ED DC AW HD DA* × |
|---|---|---|
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Filter Size (mm) | 77 | 82 |
| Notes | Included Accessories: HB-23 Hood, CL-76 Case | Dustproof, weather-resistant construction; Features latest lens coatings. |
| Closest Focus (m) | 0.3 | 0.3 |
| Magnification Ratio (x) | 0.22 | 0.1 |
| Diameter (mm) | 81 | 90 |
| Type | Wide Zoom | Wide Zoom |
| APS Equivalent | 26 - 53mm | 17 - 27.5mm |
| Diaphragm Blades | 9 | 9 |
| Image Circle | 35mm | APS-C |
| Focal Length (mm) | 17.00 - 35.00 | 11.00 - 18.00 |
| Brand | Nikon | Pentax |
| Name | Nikon 17-35mm f/2.8D ED-IF AF-S Nikkor | Pentax 11-18mm f/2.8 ED DC AW HD DA* |
| Weight (g) | 746 | 704 |
| Diagonal Angle of View (degree) | 62.00 - 104.00 | 76.00 - 104.00 |
| Lens Construction | 13 elements in 10 groups, including 3 aspherical and 2 ED elements | 16 elements in 11 groups |
| Zoom System | Rotary | Rotary |
| Length (mm) | 107 | 100 |
| Diaphragm Blades Type | - | rounded |
| Focus Details | Internal; SWM with M/A switch for fast transitions between AF and MF | AF with DC motor; Focus Clamp Mechanism; AF/MF switch |
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