Comparison of Olympus 12-40mm ƒ/2.8 Pro M.Zuiko Digital ED and Pentax SMC P-DA 16-45mm f/4 ED AL [S]ave
| Attribute |  Pentax SMC P-DA 16-45mm f/4 ED AL × |  Olympus 12-40mm ƒ/2.8 Pro M.Zuiko Digital ED × |
|---|---|---|
| Notes | Included Accessories: Lens Hood | Dust and Splash-proof |
| Aperture (f) | 4.00 - 22.00 | 2.80 - 22.00 |
| Magnification Ratio (x) | 0.26 | 0.3 |
| Filter Size (mm) | 67 | 62 |
| Focus Details | Internal with "Quick Shift" AF/MF mechanism | - |
| Closest Focus (m) | 0.28 | 0.2 |
| Focal Length (mm) | 16.00 - 45.00 | 12.00 - 40.00 |
| Zoom System | Rotary | Rotary |
| Brand | Pentax | Olympus |
| Image Circle | APS-C | Image Circle |
| Name | Pentax SMC P-DA 16-45mm f/4 ED AL | Olympus 12-40mm ƒ/2.8 Pro M.Zuiko Digital ED |
| Weight (g) | 365 | 382 |
| Type | Standard Zoom | Standard Zoom |
| Diaphragm Blades Type | - | circular |
| Diaphragm Blades | - | 7 |
| Diagonal Angle of View (degree) | 35.00 - 83.00 | 30.00 - 84.00 |
| Lens Construction | 13 elements in 10 groups, including 2 aspherical and 1 ED elements | 14 elements in 9 groups, including 1 aspherical ED element, 2 aspherical elements, 1 DSA element, 2 ED element, 1 HD element, and 2 HR elements |
| Diameter (mm) | 72 | 70 |
| Length (mm) | 92 | 84 |
| APS Equivalent | 24 - 67.5mm | - |
| 35mm Equivalent | - | 24 - 80mm |
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