| Attribute | Sigma 45mm f/2.8 DG DN Contemporary × | Pentax 35mm ƒ/2.8 Macro Limited HD DA × |
|---|---|---|
| Filter Size (mm) | 55 | 49 |
| Notes | Available AF Mounts: L-Mount, Sony E-Mount | Available in black or silver; Hood is built-in, pullout type; High-grade multi-layer HD (High Definition) coating |
| Closest Focus (m) | 0.24 | 0.14 |
| Magnification Ratio (x) | 0.25 | 1 |
| Type | Wide Prime | Standard Prime Macro |
| Length (mm) | 46.2 | 46.5 |
| APS Equivalent | 1.5x: 67.5mm; 1.6x: 72mm | 52.5mm |
| Diagonal Angle of View (degree) | 51.30 | 44.00 |
| Image Circle | 35mm | APS-C |
| Focal Length (mm) | 45.00 | 35.00 |
| Brand | Sigma | Pentax |
| Name | Sigma 45mm f/2.8 DG DN Contemporary | Pentax 35mm ƒ/2.8 Macro Limited HD DA |
| Weight (g) | 215 | 214 |
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Diaphragm Blades | 7 | 9 |
| Diaphragm Blades Type | rounded | rounded |
| Lens Construction | 8 elements in 7 groups | 9 elements in 8 groups |
| Diameter (mm) | 64 | 63 |
| Focus Details | Smooth, quiet and high-speed AF via stepping motor | Quick-shift Focus System |