Zeiss Ultra Prime 40mm T1.9 vs Zeiss Batis Apo-Sonnar 2.8/135 T*
Zeiss Ultra Prime 40mm T1.9 vs Zeiss Batis Apo-Sonnar 2.8/135 T*
When comparing Zeiss Batis Apo-Sonnar 2.8/135 T* 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 2.8 aperture of Zeiss Batis Apo-Sonnar 2.8/135 T*. 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 Zeiss Batis Apo-Sonnar 2.8/135 T*:
| Zeiss Ultra Prime 40mm T1.9 | Zeiss Batis Apo-Sonnar 2.8/135 T* | |
 | | |
| Brand | Zeiss | Zeiss |
| Lens Mount | Missing | Sony E |
| Focal Length | 40 mm | 135 mm |
| Largest Aperture | 1.9 | 2.8 |
| Type | Missing | Prime |