Zeiss Ultra Prime 40mm T1.9 vs Sony FE 40mm F2.5 G
Zeiss Ultra Prime 40mm T1.9 vs Sony FE 40mm F2.5 G
When comparing Sony FE 40mm F2.5 G and Zeiss Ultra Prime 40mm T1.9, which one is better?
1. Largest Aperture Comparison
The Zeiss Ultra Prime 40mm T1.9 has the largest aperture of the two lenses at 1.9 compared to the 2.5 aperture of Sony FE 40mm F2.5 G. This means that you get more light to your sensor using Zeiss Ultra Prime 40mm T1.9 wide open, and therefore it might be a better lens in dark situations.
Winner: Zeiss Ultra Prime 40mm T1.9
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 Zeiss Ultra Prime 40mm T1.9 and Sony FE 40mm F2.5 G:
| Zeiss Ultra Prime 40mm T1.9 | Sony FE 40mm F2.5 G | |
 |  | |
| Brand | Zeiss | Sony |
| Weight | Missing | 173 g |
| Lens Mount | Missing | Sony E |
| Focal Length | 40 mm | 40 mm |
| Largest Aperture | 1.9 | 2.5 |
| Anamorphic | Missing | No |
| Minimum Focus Distance | Missing | 28 cm |
| Type | Missing | Prime |
| Filter Thread Diameter | Missing | 49 |
| Lens Groups | Missing | 9 |
| Lens Elements | Missing | 9 |
| Image Stabilization | Missing | No |
| Autofocus | Missing | Evet |
| Macro | Missing | No |
| Weather Seal | Missing | Yes |
| Full Frame Coverage | Missing | Yes |
| Lens Hood Included | Missing | Yes |