Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount) vs Canon RF 16mm F2.8 STM
Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount) vs Canon RF 16mm F2.8 STM
When comparing Canon RF 16mm F2.8 STM and Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount), which one is better?
1. Lens Mount Comparison
The lenses each feature different lens mounts — the Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) features a Sony E while the Canon RF 16mm F2.8 STM features a Canon RF — and because of this the preference varies. If you have a compatible camera, then of course that lens will be a better choice for you.
Winner: Tied — It depends on your gear
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
Both lenses share the same aperture of 2.8 — this means that you may buy both Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) and Canon RF 16mm F2.8 STM in this regard; they''re the same.
Winner: Tied
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 Canon RF 16mm F2.8 STM or Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) 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
Canon RF 16mm F2.8 STM features a minimum focus distance of 13 cm while Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) has a minimum focus distance of 20 cm. Depending on your shooting style, the Canon RF 16mm F2.8 STM might be a better choice.
Winner: Canon RF 16mm F2.8 STM
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 Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) or Canon RF 16mm F2.8 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.
6. Stabilization Comparison
Neither Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) or Canon RF 16mm F2.8 STM 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.
7. Autofocus Comparison
Both lenses have autofocus, which means that they're both great at focusing targets while taking photographs or filming video. Just remember, most cameras do not offer good autofocus while filming video.
Winner: Tied — both have this feature
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.
8. Macro Comparison
Neither Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) or Canon RF 16mm F2.8 STM 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.
9. Full Frame Comparison
Both Canon RF 16mm F2.8 STM and Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) 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 Rokinon 12mm F2.8 ED AS NCS Fish-eye (Sony E Mount) and Canon RF 16mm F2.8 STM:
| Rokinon 12mm F2.8 ED AS NCS Fish-eye - (Sony E Mount) | Canon RF 16mm F2.8 STM | |
 |  | |
| Brand | Rokinon | Canon |
| Weight | Missing | 165 g |
| Lens Mount | Sony E | Canon RF |
| Focal Length | 12 mm | 16 mm |
| Largest Aperture | 2.8 | 2.8 |
| Anamorphic | No | No |
| Minimum Focus Distance | 20 cm | 13 cm |
| Type | Prime | Prime |
| Aperture Range | 2.8 - 22 | 2.8 - 22 |
| Filter Thread Diameter | Missing | 43 |
| Lens Groups | 8 | 7 |
| Lens Elements | 12 | 9 |
| Image Stabilization | No | No |
| Autofocus | Evet | Evet |
| Macro | No | No |
| Weather Seal | No | Missing |
| Full Frame Coverage | Yes | Yes |
| Lens Hood Included | No | Missing |