Comparison: Sigma 50/1,4 DG HSM Art (Canon) vs Atlas Orion 21mm T2 2x
| Sigma 50/1,4 DG HSM Art (Canon) | Atlas Orion 21mm T2 2x | |
 |  | |
| Brand | Sigma | Atlas Lens Co. |
| See Lowest Price | See Lowest Price |
| Sigma 50/1,4 DG HSM Art (Canon) | Atlas Orion 21mm T2 2x | |
| | |
| Brand | Sigma | Atlas Lens Co. |
| See Lowest Price | See Lowest Price |