Canon CN-E 50mm T1.3 L F vs Canon EF 40mm f/2.8 STM
Canon CN-E 50mm T1.3 L F vs Canon EF 40mm f/2.8 STM
When comparing Canon EF 40mm f/2.8 STM and Canon CN-E 50mm T1.3 L F, which one is better?
1. Largest Aperture Comparison
The Canon CN-E 50mm T1.3 L F has the largest aperture of the two lenses at 1.3 compared to the 2.8 aperture of Canon EF 40mm f/2.8 STM. This means that you get more light to your sensor using Canon CN-E 50mm T1.3 L F wide open, and therefore it might be a better lens in dark situations.
Winner: Canon CN-E 50mm T1.3 L F
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.
2. Lens Type Comparison
Both lenses are Prime lenses, which means that you can choose both Canon CN-E 50mm T1.3 L F or Canon EF 40mm f/2.8 STM if you're looking for that type of lens.
Winner: Tied
Regarding type: There are two types of lenses; zoom lenses and prime lenses. Prime lenses have a fixed focal length and cannot be zoomed, while zoom lenses have a focal length range and can be zoomed in to get closer to the subject. Prime lenses are usually lighter, cheaper and let in more light. Zoom lenses are more versatile but are more expensive since they require a more advanced lens design.
Specifications
Full specifications table of Canon CN-E 50mm T1.3 L F and Canon EF 40mm f/2.8 STM:
| Canon CN-E 50mm T1.3 L F | Canon EF 40mm f/2.8 STM | |
 |  | |
| Brand | Canon | Canon |
| Lens Mount | Missing | Canon EF |
| Focal Length | 50 mm | 40 mm |
| Largest Aperture | 1.3 | 2.8 |
| Anamorphic | Missing | No |
| Type | Prime | Prime |