Samyang AF 135/1.8 FE vs Sigma 40mm T1.5 FF (Sony E)
Samyang AF 135/1.8 FE vs Sigma 40mm T1.5 FF (Sony E)
When comparing Sigma 40mm T1.5 FF (Sony E) and Samyang AF 135/1.8 FE, 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 Samyang AF 135/1.8 FE. 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.
3. Autofocus Comparison
In regards to autofocus, the winner is Samyang AF 135/1.8 FE since the other lens in this comparison, the Sigma 40mm T1.5 FF - (Sony E) does not have autofocus at all — it is a manual focus lens.
Winner: Samyang AF 135/1.8 FE
Regarding autofocus: Lenses with autofocus help you focus when shooting pictures or video. If a lens only has manual focus it means that you have to focus manually by adjusting the focus wheel on the lens. Most cinema lenses do not use autofocus and are manual focus only.
4. Macro Comparison
Neither Samyang AF 135/1.8 FE or Sigma 40mm T1.5 FF - (Sony E) are macro lenses.
Winner: Tied — Neither have this feature
Regarding macro: Macro lenses can focus much closer to your subjects and might be suitable when photographing flowers, insects, wildlife and nature.
5. Full Frame Comparison
Both Sigma 40mm T1.5 FF - (Sony E) and Samyang AF 135/1.8 FE cover a full frame sensor and can be used on full frame cameras as well as cameras with smaller sensors.
Winner: Tied — both have this feature
Regarding full frame coverage: All lenses do not cover full frame sensors, but not all cameras are full frame cameras either. If a lens covers a full frame sensor it can be used on all cameras with a matching lens mount, both full frame and crop sensors, except for medium format cameras.
Specifications
Full specifications table of Samyang AF 135/1.8 FE and Sigma 40mm T1.5 FF (Sony E):
| Samyang AF 135/1.8 FE | Sigma 40mm T1.5 FF - (Sony E) | |
 |  | |
| Brand | Samyang | Sigma |
| Weight | Missing | 1620 g |
| Lens Mount | Sony E | Sony E |
| Focal Length | 135 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 | Evet | Hayır |
| Macro | No | No |
| Weather Seal | Missing | Yes |
| Full Frame Coverage | Yes | Yes |
| Lens Hood Included | Yes | No |