Sony 35mm f/1.4 GM vs Sirui 50mm T2.9 1.6X Full Frame (Sony E Mount)
Sony 35mm f/1.4 GM vs Sirui 50mm T2.9 1.6X Full Frame (Sony E Mount)
When comparing Sirui 50mm T2.9 1.6X Full Frame (Sony E Mount) and Sony 35mm f/1.4 GM, 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 Sony 35mm f/1.4 GM has the largest aperture of the two lenses at 1.4 compared to the 2.9 aperture of Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount). This means that you get more light to your sensor using Sony 35mm f/1.4 GM wide open, and therefore it might be a better lens in dark situations.
Winner: Sony 35mm f/1.4 GM
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. Anamorphic Comparison
Winner: Sirui 50mm T2.9 1.6X Full Frame (Sony E Mount)
Regarding anamorphic: Anamorphic lenses are usually used on cinema cameras and squeezes the image when its recorded, which gives the final, stretched out, image oval bokeh and a different angle of view. The most common lenses, however, are not anamorphic but spherical, which gives a spherical bokeh and is a much cheaper lens design.
4. Lens Type Comparison
Both lenses are Prime lenses, which means that you can choose both Sony 35mm f/1.4 GM or Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) 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.
5. Stabilization Comparison
Neither Sony 35mm f/1.4 GM or Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) feature built-in image stabilization.
Winner: Tied — Neither have this feature
Regarding image stabilization: When a lens features built-in stabilization, it will actively help you hold the image steady by adjusting the optical elements inside the lens to compensate for movements. Do remember that lens stabilization is not required, but it may be suitable depending on your specific needs.
6. Autofocus Comparison
In regards to autofocus, the winner is Sony 35mm f/1.4 GM since the other lens in this comparison, the Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) does not have autofocus at all — it is a manual focus lens.
Winner: Sony 35mm f/1.4 GM
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.
7. Macro Comparison
Neither Sony 35mm f/1.4 GM or Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) 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.
8. Weather Seal Comparison
Sony 35mm f/1.4 GM features a weather sealed design while Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) does not. This means that Sony 35mm f/1.4 GM is a much better choice if you know that you'll use the lens in harsh environments, where moist, rain or dust is present.
Winner: Sony 35mm f/1.4 GM
Regarding weather seal: A lens that is weather sealed will perform better over time if you're using the lens in harsh conditions where it's wet or dusty. It may not matter if you're merely using your lens in a studio or in your home.
Specifications
Full specifications table of Sony 35mm f/1.4 GM and Sirui 50mm T2.9 1.6X Full Frame (Sony E Mount):
| Sony 35mm f/1.4 GM | Sirui 50mm T2.9 1.6X Full Frame - (Sony E Mount) | |
 |  | |
| Brand | Sony | Sirui |
| Weight | 524 g | Missing |
| Lens Mount | Sony E | Sony E |
| Focal Length | 35 mm | 50 mm |
| Largest Aperture | 1.4 | 2.9 |
| Anamorphic | No | Yes |
| Minimum Focus Distance | 27 cm | Missing |
| Type | Prime | Prime |
| Aperture Blades | 11 | Missing |
| Lens Groups | 10 | Missing |
| Lens Elements | 14 | Missing |
| Image Stabilization | No | No |
| Parfocal | Yes | Missing |
| Autofocus | Evet | Hayır |
| Macro | No | No |
| Weather Seal | Yes | No |
| Full Frame Coverage | Missing | Yes |