| Attribute | Sigma APO 170-500mm f/5-6.3 Aspherical RF × | Tamron SP AF 200-500mm f/5-6.3 Di LD IF × |
|---|---|---|
| Filter Size (mm) | 86 | 86 |
| Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax | Available mounts: Canon, Minolta, Nikon |
| Closest Focus (m) | 3 | 2.5 |
| Magnification Ratio (x) | 0.15 | 0.2 |
| Type | Telephoto Zoom | Telephoto Zoom |
| Length (mm) | 232 | 227 |
| APS Equivalent | 1.5x: 255 - 750mm; 1.6x: 272 - 800mm | 1.5x: 300 - 750mm; 1.6x: 320 - 800mm |
| Zoom System | Rotary | Rotary |
| Image Circle | 35mm | Image Circle |
| Focal Length (mm) | 170.00 - 500.00 | 200.00 - 500.00 |
| Brand | Sigma | Tamron |
| Name | Sigma APO 170-500mm f/5-6.3 Aspherical RF | Tamron SP AF 200-500mm f/5-6.3 Di LD IF |
| Weight (g) | 1345 | 1237 |
| Aperture (f) | 5.00 - 32.00 | 5.00 - 32.00 |
| Diaphragm Blades | 9 | 9 |
| Diagonal Angle of View (degree) | 5.00 - 14.50 | 5.00 - 12.00 |
| Lens Construction | 13 elements in 11 groups, including 1 aspherical and 3 SLD elements | 13 elements in 10 groups, including two LD (Low Dispersion) elements |
| Diameter (mm) | 92.5 | 93.5 |
| Focus Details | Internal | Internal |