Comparison of Pentax 55mm ƒ/1.4 SDM SMC DA* and Sigma 65mm f/2 DG DN Contemporary [S]ave
| Attribute |  Sigma 65mm f/2 DG DN Contemporary × |  Pentax 55mm ƒ/1.4 SDM SMC DA* × |
|---|---|---|
| Filter Size (mm) | 62 | 58 |
| Notes | Available AF Mounts: L-Mount, Sony E-Mount | Included Accessories: Lens Hood |
| Closest Focus (m) | 0.55 | 0.45 |
| Magnification Ratio (x) | 0.15 | 0.17 |
| Type | Tele Prime | Standard Prime |
| Length (mm) | 74.7 | 66 |
| APS Equivalent | 1.5x: 97.5mm | 83mm |
| Diagonal Angle of View (degree) | 36.80 | 28.60 |
| Image Circle | 65mm | APS-C |
| Focal Length (mm) | 65.00 | 55.00 |
| Brand | Sigma | Pentax |
| Name | Sigma 65mm f/2 DG DN Contemporary | Pentax 55mm ƒ/1.4 SDM SMC DA* |
| Weight (g) | 405 | 375 |
| Aperture (f) | 2.00 - 22.00 | 1.40 - 22.00 |
| Diaphragm Blades | 9 | 9 |
| Diaphragm Blades Type | rounded | rounded |
| Lens Construction | 12 elements in 9 groups, with 1 SLD glass and 2 aspherical lenses | 9 elements in 8 groups |
| Diameter (mm) | 72 | 70.5 |
| Focus Details | Smooth, quiet and high-speed AF via stepping motor | SDM (supersonic motor), AF/MF switch |
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