Comparison of Zeiss 28mm f/1.4 Otus 1.4/28 APO Distagon and Sigma 40mm f/1.4 DG HSM Art [S]ave
| Attribute |  Zeiss 28mm f/1.4 Otus 1.4/28 APO Distagon × |  Sigma 40mm f/1.4 DG HSM Art × |
|---|---|---|
| Filter Size (mm) | 95 | 82 |
| Notes | Available Mounts: Canon EF (ZE), Nikon F (ZF.2); Included Accessories: Lens hood, front and rear lens caps. | Available AF Mounts: Canon EF, Nikon F, Sigma SA and Sony E; Compatible with Sigma's USB Dock and Mount Conversion Service |
| Closest Focus (m) | 0.3 | 0.4 |
| Magnification Ratio (x) | 0.16 | 0.15 |
| Type | Wide Prime | Wide Prime |
| Length (mm) | 137 | 131 |
| APS Equivalent | 1.5x: 42mm1.6x: 44.8mm | 1.5x: 60mm; 1.6x: 64mm |
| Diagonal Angle of View (degree) | 75.00 | 56.80 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 28.00 | 40.00 |
| Brand | Carl-zeiss | Sigma |
| Name | Zeiss 28mm f/1.4 Otus 1.4/28 APO Distagon | Sigma 40mm f/1.4 DG HSM Art |
| Weight (g) | 1390 | 1200 |
| Aperture (f) | 1.40 - 16.00 | 1.40 - 16.00 |
| Diaphragm Blades | 9 | 9 |
| Diaphragm Blades Type | rounded | rounded |
| Lens Construction | 16 elements in 13 groups, including 2 aspheric elements and 8 elements made of special glass with anomalous partial dispersion | 16 elements in 12 groups, including 1 aspherical, 3 FLD and 3 SLD elements |
| Diameter (mm) | 108.9 | 87.8 |
| Focus Details | Internal focusing; Manual focus only | HSM (Hypersonic Motor) with full-time manual focus override |
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