Comparison of Canon EF 28mm f/2.8 and Pentax 15mm f/4 ED AL Limited HD DA [S]ave
| Attribute |  Canon EF 28mm f/2.8 × |  Pentax 15mm f/4 ED AL Limited HD DA × |
|---|---|---|
| Filter Size (mm) | 52 | 49 |
| Aperture (f) | 2.80 - 22.00 | 4.00 - 22.00 |
| Closest Focus (m) | 0.3 | 0.18 |
| Magnification Ratio (x) | 0.13 | 0.15 |
| Type | Wide Prime | Wide Prime |
| Focus Details | Focus Details | Internal, with "Quick-Shift" focus system |
| APS Equivalent | 45mm | 23mm |
| Notes | - | Hood is built-in, pullout type; Available in black or silver; High-grade multi-layer HD (High Definition) coating |
| Image Circle | 35mm | APS-C |
| Focal Length (mm) | 28.00 | 15.00 |
| Brand | Canon | Pentax |
| Name | Canon EF 28mm f/2.8 | Pentax 15mm f/4 ED AL Limited HD DA |
| Weight (g) | 185 | 189 |
| Diagonal Angle of View (degree) | 75.00 | 86.00 |
| Diaphragm Blades | 5 | 7 |
| Diameter (mm) | 67 | 63 |
| Length (mm) | 42 | 39.5 |
| Diaphragm Blades Type | - | rounded |
| Lens Construction | 5 elements in 5 groups, including 1 aspherical element | 8 elements in 6 groups |
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