Comparison of Nikon 8-15mm f/3.5-4.5E ED AF-S Fisheye Nikkor and Pentax HD DA Fish-Eye 10-17mm f/3.5-4.5 ED [S]ave
| Attribute |  Nikon 8-15mm f/3.5-4.5E ED AF-S Fisheye Nikkor × |  Pentax HD DA Fish-Eye 10-17mm f/3.5-4.5 ED × |
|---|---|---|
| Diagonal Angle of View (degree) | 175.00 - 180.00 | 100.00 - 180.00 |
| Aperture (f) | 3.50 - 29.00 | 3.50 - 32.00 |
| Diaphragm Blades Type | rounded | - |
| Closest Focus (m) | 0.16 | 0.14 |
| Magnification Ratio (x) | 0.34 | 0.39 |
| Notes | - | Removable lens hood, lens caps and case included |
| Type | Wide Zoom Fisheye | Fisheye Zoom |
| APS Equivalent | 12 - 22.5mm | - |
| Diaphragm Blades | 7 | 6 |
| Image Circle | Image Circle | APS-C |
| Focal Length (mm) | 8.00 - 15.00 | 10.00 - 17.00 |
| Brand | Nikon | Pentax |
| Name | Nikon 8-15mm f/3.5-4.5E ED AF-S Fisheye Nikkor | Pentax HD DA Fish-Eye 10-17mm f/3.5-4.5 ED |
| Weight (g) | 485 | 323 |
| Zoom System | Rotary | Rotating |
| Length (mm) | 83 | 70 |
| Diameter (mm) | 77.5 | 67.5 |
| Focus Details | Internal with Silent Wave Motor (AF-S); MA/M switch | "Quick-Shift" Focus System for instant shift to manual focus |
| 35mm Equivalent | - | 15 - 25.5mm |
| Lens Construction | 15 elements in 13 groups, including 2 aspherical and 3 ED elements; Flourine Coat; Nano Crystal Coat | 10 elements in 8 groups; HD coatings; SP coating on front element |
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