Sony FE 50mm F1.8 vs Sigma 40mm T1.5 FF (Sony E)
Sony FE 50mm F1.8 vs Sigma 40mm T1.5 FF (Sony E)
When comparing Sigma 40mm T1.5 FF (Sony E) and Sony FE 50mm F1.8, which one is better?
1. Lens Mount Comparison
These two lenses use the same lens mount, the Sony E. This means that both lenses are compatible with cameras that use this mount.
Winner: Tied
Regarding lens mount: Popular lens mounts are Canon RF and EF, Micro Four Thirds and Nikon Z. Different lens mounts lets you connect different lenses to camera bodies, but some might not be compatible. This can be helped by using an adapter, like a Canon EF to RF adapter.
2. Largest Aperture Comparison
The Sigma 40mm T1.5 FF - (Sony E) has the largest aperture of the two lenses at 1.5 compared to the 1.8 aperture of Sony FE 50mm F1.8. This means that you get more light to your sensor using Sigma 40mm T1.5 FF - (Sony E) wide open, and therefore it might be a better lens in dark situations.
Winner: Sigma 40mm T1.5 FF (Sony E)
Regarding largest aperture: A lower aperture number means that the widest aperture on the lens is larger. This means that more light will hit the sensor and also that the depth of field will be shallower, better separating your subject from the background.
Specifications
Full specifications table of Sony FE 50mm F1.8 and Sigma 40mm T1.5 FF (Sony E):
| Sony FE 50mm F1.8 | Sigma 40mm T1.5 FF - (Sony E) | |
 |  | |
| Brand | Sony | Sigma |
| Weight | Missing | 1620 g |
| Lens Mount | Sony E | Sony E |
| Focal Length | 50 mm | 40 mm |
| Largest Aperture | 1.8 | 1.5 |
| Anamorphic | Missing | No |
| Minimum Focus Distance | Missing | 40 cm |
| Type | Missing | Prime |
| Aperture Range | Missing | 1.5 - 16 |
| Filter Thread Diameter | Missing | 82 |
| Image Stabilization | Missing | Yes |
| Autofocus | Missing | Hayır |
| Macro | Missing | No |
| Weather Seal | Missing | Yes |
| Full Frame Coverage | Missing | Yes |
| Lens Hood Included | Missing | No |