Zeiss Sonnar T* E 55 mm f1,8 ZA vs Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount)
Zeiss Sonnar T* E 55 mm f1,8 ZA vs Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount)
When comparing Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount) and Zeiss Sonnar T* E 55 mm f1,8 ZA, 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 Zeiss Sonnar T* E 55 mm f1,8 ZA has the largest aperture of the two lenses at 1.8 compared to the 2.8 aperture of Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount). This means that you get more light to your sensor using Zeiss Sonnar T* E 55 mm f1,8 ZA wide open, and therefore it might be a better lens in dark situations.
Winner: Zeiss Sonnar T* E 55 mm f1,8 ZA
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
Neither Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) or Zeiss Sonnar T* E 55 mm f1,8 ZA are anamorphic lenses.
Winner: Tied — Neither have this feature
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. Focus Distance Comparison
Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) features a minimum focus distance of 20 cm while Zeiss Sonnar T* E 55 mm f1,8 ZA has a minimum focus distance of 50 cm. Depending on your shooting style, the Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) might be a better choice.
Winner: Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount)
Regarding minimum focus distance: The minimum focus distance of a lens is the smallest distance from the lens to the subject you want to be in focus; subjects closer than the lens' minimum focus distance will not be in focus. Whether or not this is important to you is up for you to decide, but some want to take close photos and videos and in those cases it's important to have a lens with a low minimum focus distance.
5. Lens Type Comparison
Both lenses are Prime lenses, which means that you can choose both Zeiss Sonnar T* E 55 mm f1,8 ZA or Rokinon 12mm F2.8 ED AS NCS Fish-eye - (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.
Specifications
Full specifications table of Zeiss Sonnar T* E 55 mm f1,8 ZA and Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount):
| Zeiss Sonnar T* E 55 mm f1,8 ZA | Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) | |
 |  | |
| Brand | Zeiss | Rokinon |
| Weight | 281 g | Missing |
| Lens Mount | Sony E | Sony E |
| Focal Length | 55 mm | 12 mm |
| Largest Aperture | 1.8 | 2.8 |
| Anamorphic | No | No |
| Minimum Focus Distance | 50 cm | 20 cm |
| Type | Prime | Prime |
| Aperture Range | Missing | 2.8 - 22 |
| Lens Front Diameter (Not Filter Thread) | 49 mm | Missing |
| Aperture Blades | 9 | Missing |
| Lens Groups | Missing | 8 |
| Lens Elements | Missing | 12 |
| Image Stabilization | Missing | No |
| Autofocus | Missing | Evet |
| Macro | Missing | No |
| Weather Seal | Missing | No |
| Full Frame Coverage | Missing | Yes |
| Lens Hood Included | Missing | No |