Comparison of Canon EF 20mm f/2.8 USM and Pentax SMC P-DA 14mm f/2.8 ED IF [S]ave
| Attribute |  Canon EF 20mm f/2.8 USM × |  Pentax SMC P-DA 14mm f/2.8 ED IF × |
|---|---|---|
| Diagonal Angle of View (degree) | 94.00 | 90.00 |
| Filter Size (mm) | 72 | 77 |
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Closest Focus (m) | 0.25 | 0.17 |
| Magnification Ratio (x) | 0.14 | 0.19 |
| Type | Wide Prime | Wide Prime |
| Focus Details | Inner focusing; full-time manual focus and USM | Internal with "Quick Shift" AF/MF mechanism |
| APS Equivalent | 32mm | 21mm |
| Diaphragm Blades | 6 | 6 |
| Image Circle | 35mm | APS-C |
| Focal Length (mm) | 20.00 | 14.00 |
| Brand | Canon | Pentax |
| Name | Canon EF 20mm f/2.8 USM | Pentax SMC P-DA 14mm f/2.8 ED IF |
| Weight (g) | 405 | 420 |
| Diameter (mm) | 71 | 83.5 |
| Length (mm) | 77 | 69 |
| Notes | - | Included Accessories: Lens Hood |
| Lens Construction | 11 elements in 9 groups | 12 elements in 11 groups |
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