Comparison of Olympus 50-200mm f/2.8-3.5 ED SWD Zuiko Digital and Pentax 60-250mm ƒ/4 ED IF SDM SMC DA* [S]ave
| Attribute |  Olympus 50-200mm f/2.8-3.5 ED SWD Zuiko Digital × |  Pentax 60-250mm ƒ/4 ED IF SDM SMC DA* × |
|---|---|---|
| Aperture (f) | 2.80 - 22.00 | 4.00 - 32.00 |
| Diaphragm Blades Type | circular | - |
| Filter Size (mm) | 67 | 67 |
| Notes | Dust and drip proof. Includes Lens Hood (LH-70C) and Lens Case (LSC-1220) | Included Accessories: Lens Hood |
| Focus Details | - | Hybrid SDM/screw drive autofocus, AF/MF switch |
| Type | Telephoto Zoom | Telephoto Zoom |
| Diaphragm Blades | 9 | 9 |
| Diameter (mm) | 86.5 | 82 |
| Image Circle | Image Circle | APS-C |
| Focal Length (mm) | 50.00 - 200.00 | 60.00 - 250.00 |
| Brand | Olympus | Pentax |
| Name | Olympus 50-200mm f/2.8-3.5 ED SWD Zuiko Digital | Pentax 60-250mm ƒ/4 ED IF SDM SMC DA* |
| Weight (g) | 995 | 1230 |
| Diagonal Angle of View (degree) | 6.20 - 24.00 | 6.50 - 26.50 |
| Lens Construction | 16 elements in 15 groups, including 3 ED elements | 15 elements in 13 groups, including 2 ED elements |
| Zoom System | Rotary | Rotary |
| Closest Focus (m) | 1.2 | 1.1 |
| 35mm Equivalent | 100 - 400mm | - |
| Length (mm) | 157 | 167.5 |
| APS Equivalent | - | 92 - 383mm |
| Magnification Ratio (x) | 0.21 | 0.15 |
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