Comparison of Nikon 180mm f/2.8D ED-IF AF Nikkor and Pentax 200mm f/2.8 ED IF SDM SMC DA* [S]ave
| Attribute |  Pentax 200mm f/2.8 ED IF SDM SMC DA* × |  Nikon 180mm f/2.8D ED-IF AF Nikkor × |
|---|---|---|
| Magnification Ratio (x) | 0.2 | 0.15 |
| Filter Size (mm) | 77 | 72 |
| Focus Details | Internal, SDM (Supersonic Motor) with Quick-shift Focus System | Internal |
| Closest Focus (m) | 1.2 | 1.5 |
| Lens Construction | 9 elements in 8 groups | 8 elements in 6 groups, including 1 ED element |
| Length (mm) | 134 | 145 |
| Focal Length (mm) | 200.00 | 180.00 |
| Diagonal Angle of View (degree) | 8.10 | 14.00 |
| Brand | Pentax | Nikon |
| Image Circle | APS-C | 35mm |
| Name | Pentax 200mm f/2.8 ED IF SDM SMC DA* | Nikon 180mm f/2.8D ED-IF AF Nikkor |
| Weight (g) | 825 | 768 |
| Type | Telephoto Prime | Telephoto Prime |
| Notes | Included Accessories: PH-RBK Hood | Lens Hood: Built-in; Includes CI-38 Case |
| APS Equivalent | 300mm | 270mm |
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Diaphragm Blades | 9 | 9 |
| Zoom System | - | n/a |
| Diameter (mm) | 83 | 79 |
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