Comparison: Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) vs Sigma 40mm T1.5 FF - (Sony E)
| Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) | Sigma 40mm T1.5 FF - (Sony E) | |
 |  | |
| Brand | Sirui | Sigma |
| See Lowest Price | See Lowest Price | |
| Vikt | - | 1620 |
| Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) | Sigma 40mm T1.5 FF - (Sony E) | |
| | |
| Brand | Sirui | Sigma |
| See Lowest Price | See Lowest Price | |
| Vikt | - | 1620 |