Comparison of Leica 50mm ƒ/1.4 Summilux-M Asph. and Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM [S]ave
| Attribute |  Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM × |  Leica 50mm ƒ/1.4 Summilux-M Asph. × |
|---|---|---|
| Aperture (f) | 2.80 - 22.00 | 1.40 - 16.00 |
| Filter Size (mm) | 72 | 46 |
| Notes | Image Stabilized. Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony | Leica M-mount with 6-bit ID bar code; Built-in telescopic lens hood; Available in black (anodized aluminum) or silver (chromed brass). |
| Closest Focus (m) | 0.22 | 0.7 |
| Magnification Ratio (x) | 0.37 | 0.09 |
| Diaphragm Blades Type | rounded | - |
| Type | Standard Zoom | Standard Prime |
| APS Equivalent | 1.5x: 25.5 - 105mm; 1.6x: 27.2 - 112mm | 1.33x (M8): 68.6mm |
| Diaphragm Blades | 7 | 9 |
| Image Circle | APS-C | 35mm |
| Focal Length (mm) | 17.00 - 70.00 | 51.60 |
| Brand | Sigma | Leica |
| Name | Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM | Leica 50mm ƒ/1.4 Summilux-M Asph. |
| Weight (g) | 535 | 335 |
| Diagonal Angle of View (degree) | 20.20 - 72.40 | 47.00 |
| Lens Construction | 17 elements in 13 groups, including 1 ELD and 3 aspherical elements | 8 elements in 5 groups |
| Diameter (mm) | 79 | 53.5 |
| Length (mm) | 88.9 | 52.5 |
| Zoom System | Rotary with lock | - |
| Focus Details | Internal, with Hyper-Sonic Motor; AF/MF switch | Manual focus only |
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