
Canon RF 16mm F/2.8 STM
f/2.8 instead of f/1.4
Canon · 14 mm · f/1.4 · L

Scores combine our editorial testing with published lab data.
General | |
|---|---|
About This LensThis Canon prime gives RF-mount full-frame bodies a 14mm ultra-wide view. Its likely subjects are the night sky above a landscape, building interiors, and broad architectural spaces. The f/1.4 maximum aperture is unusually fast for this focal length, and it is the lens's defining strength. The trade-off is the fixed focal length. At 14mm you frame by moving, and a second lens is the only way to tighten the view. Many owners will pair it with a standard zoom for everyday framing. Released in 2026 and still in production, it is a current design rather than an older model. | |
| Brand | Canon |
| Release Year | 2026 |
Production Status ⓘCurrent status of lens manufacturing (e.g., in production, discontinued). | |
Pro Branding ⓘSpecific branding codes used for professional-tier lenses. | L |
Lens Mount ⓘThe lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras. | Canon RF |
System ⓘIndicates which camera system the lens is designed to attach to. | Canon EOS R |
Maximum Format ⓘLargest sensor size compatible with the lens. | |
Physical93/100 | |
About the BuildIt weighs 1 lb 4.4 oz (578 g) and is 4.41 in (112 mm) long, a manageable package for such a fast ultra-wide. The barrel measures 3.01 in (76.5 mm) across. It scores 93/100 in our physical assessment. The front takes no screw-in filters, which matters for anyone who relies on them for long exposures. | |
| Lens Weight | 578 g |
Lens Diameter ⓘWidth of the lens at its widest point | 76.5 mm |
Lens Length ⓘHow long the lens is from front to back. | 112 mm |
Front Filter Compatible ⓘSome lenses are compatible with front filters, some are compatible with back filters and some are compatible with both. Front filters are usually more convenient to add and remove. | No |
Optics89/100 | |
About the OpticsAt 14mm the lens takes in an extreme stretch of scene. It suits night-sky photography, where a foreground ridge or building sits beneath a broad band of stars. It also works for interiors and tight architectural views, where backing up is not an option. The f/1.4 maximum aperture is the reason to choose this lens over a slower wide. It passes far more light, so you can keep shutter speeds short enough to hold stars as points rather than trails. In dim interiors the same aperture allows lower ISO settings, which helps keep noise down. Those two gains cover its main shooting situations. You can focus as close as 0.8 ft (24 cm). That lets you place a rock, plant or doorway close to the camera so it dominates the foreground. Depth of field stays deep at 14mm even wide open, so the aperture mainly buys light rather than subject separation. Our specification assessment scores the optics 89/100. | |
Focal Range ⓘShortest to longest focal length of the lens (zoom range start - end ) | 14 mm |
Aperture Range ⓘLargest aperture at the lens's shortest focal length to longest focal length (aperture range start - end) | 1.4 |
| Focal Length Angle of View | 114° |
Flange Focal Distance ⓘDistance from lens mount to sensor. | 20 mm |
Diaphragm Type ⓘStructure and design of the aperture | |
Blades ⓘNumber of diaphragm blades in aperture | 11020 |
Zoom Lens ⓘZoom allows you to vary the focal length, change between long shots and close-ups | No |
Closest Focusing Distance ⓘMinimum distance for a subject to be in focus. | 24 cm01500 |
Maximum Magnification ⓘLargest size a subject can be reproduced | 0.11x |
| Autofocus Mode | |
| Manual Mode | |
| Manual Focusing Ring | |
Features52/100 | |
About the FeaturesThe lens is weather sealed. Rain, dust and sea spray are therefore less likely to end a shoot, and its likely subjects often involve long hours outdoors at night. A fluorine coating helps water and oil bead off, and it makes the front easier to wipe clean after a cold, damp session. There is no built-in image stabilization. At 14mm camera shake is less visible than at long focal lengths, so slower handheld shutter speeds often work. For long night exposures a tripod is the usual approach anyway. The remaining feature list is short, and it scores 52/100 for features in our specification assessment. | |
Weather Sealing ⓘWeather sealing capabilities will give you more confidence when shooting in unfavourable conditions. | |
Fluorine Coating ⓘCoating to repel water and oil from lens elements. | |
| Built In Lens Hood | |
| Lens Hood Type | |
Teleconverter ⓘA teleconverter (extender) is an extra piece of equipment that fits between the lens and the camera body to enhance magnification | No |
| Image Stabilization | No |
Construction69/100 | |
About the ConstructionThe optical formula uses 18 elements in 13 groups, including three aspherical elements and one low-dispersion element. It scores 69/100 for construction in our specification assessment. Aspherical surfaces help correct distortion and spherical aberration, which matters when architecture fills the frame. Low-dispersion glass helps reduce chromatic aberration, so coloured fringes along high-contrast edges such as streetlights against a dark sky should be less of a concern. | |
Elements ⓘLens elements refer to individual pieces of glass within the lens. | 18 |
| Groups | 13 |
Aspherical Elements ⓘThe number of aspherical lens elements which can help correct aberrations such as spherical aberration. | 3 |
Bi Aspherical Elements ⓘElements with two non-spherical surfaces | 0 |
Low Dispersion ⓘElements that reduce chromatic aberration | 1 |
Super Low Dispersion ⓘAdvanced elements further reducing chromatic aberration | 0 |
CA Reduction ⓘBuilt-in features to reduce chromatic aberration | 2 |
Internal Focusing ⓘInternal Focusing means that the lens does not change in size during focusing, and the front element does not rotate. | |

f/2.8 instead of f/1.4

