Comparison of Pentax SMC P-D FA 100mm f/2.8 Macro and Sigma Macro 105mm f/2.8 EX DG [S]ave
| Attribute |  Sigma Macro 105mm f/2.8 EX DG × |  Pentax SMC P-D FA 100mm f/2.8 Macro × |
|---|---|---|
| Diameter (mm) | 74 | 67.5 |
| Aperture (f) | 2.80 - 45.00 | 2.80 - 32.00 |
| Diagonal Angle of View (degree) | 23.30 | 24.50 |
| Magnification Ratio (x) | 1 | 1 |
| Filter Size (mm) | 58 | 49 |
| Type | Telephoto Prime Macro | Telephoto Prime Macro |
| Closest Focus (m) | 0.31 | 0.3 |
| APS Equivalent | 1.5x: 157.5mm; 1.6x: 168mm | 150mm |
| Diaphragm Blades | 8 | 8 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 105.00 | 100.00 |
| Brand | Sigma | Pentax |
| Name | Sigma Macro 105mm f/2.8 EX DG | Pentax SMC P-D FA 100mm f/2.8 Macro |
| Weight (g) | 457 | 345 |
| Focus Details | Dual Focus mechanism with limiter | - |
| Length (mm) | 97.5 | 80.5 |
| Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax, Four-Thirds; Included Accessories: Lens Hood | - |
| Lens Construction | 11 elements in 10 groups | 9 elements in 8 groups |
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