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Canon RF 45mm f/1.2 STM Full-Frame Autofocus Lens for RF-Mount {67}
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$423.00
Canon RF 45mm f/1.2 STM: a fast normal prime for RF shooters.
The 45mm focal length sits just wide enough of a traditional normal to give portraits a touch of breathing room, and the f/1.2 maximum aperture gives you serious subject separation at moderate working distances. The 9-blade circular diaphragm keeps out-of-focus areas smooth and consistent, which matters when you're shooting wide open regularly. One aspherical element in a 9-element, 7-group formula keeps the design compact, and at 346 g the lens won't upset the balance of a typical RF mirrorless body.
Autofocus runs on a stepper motor, which keeps focus transitions quiet and gradual, well-suited for video work where a hunting AF motor would be audible on-camera. The 67mm filter thread is a common size, so existing circular polarizers and ND filters are likely to transfer from other lenses in your kit. Polycarbonate construction keeps weight down while the compact 75mm length makes this one of the easier f/1.2 lenses to carry daily. No weather sealing means dry conditions are the right call for field use.
Who It's For
Portrait photographers shooting available light indoors will find the f/1.2 aperture gives them workable shutter speeds without pushing ISO into difficult territory. Video shooters benefit from the STM motor's smooth, quiet focus pulls during continuous recording. RF-S crop-body users get full-frame coverage and a longer effective field of view for tighter framing. Street and travel photographers who prioritize a small, light kit will appreciate the 346 g weight and 75mm body length at this aperture class.
Key Features
- 45mm prime focal length with f/1.2 maximum aperture
- 9-blade circular diaphragm for smooth bokeh
- Stepper motor autofocus for silent, gradual focus transitions
- Compact 75mm length and 346g weight
- 67mm filter thread compatible with standard accessories
- 0.45m minimum focus distance for close portraiture
- Canon RF and RF-S mount compatibility
- No weather sealing; dry conditions recommended
FAQ
- What's the minimum focus distance on the RF 45mm f/1.2 STM?
- 0.45 m (17.72"), which is close enough for tight headshots but far enough that you won't need to back up constantly for normal portraiture.
- Does this lens have image stabilization?
- No. On RF bodies with in-body stabilization, you'll get stabilization through the camera; on RF-S bodies without it, a tripod or faster shutter speed is your move for handheld work in low light.
- Can I use my existing 67mm filters on this lens?
- Yes. The 67mm filter thread means circular polarizers, ND filters, and other threaded accessories from your kit will mount directly.
- Is the autofocus silent enough for video?
- Yes. The stepper motor (STM) produces smooth, quiet focus transitions without the audible hunting you'd hear from standard AF motors - a key advantage for on-camera recording.
- How much does the RF 45mm f/1.2 STM weigh?
- 346 g (0.76 lb), making it light enough to balance well on RF mirrorless bodies without adding noticeable bulk.
- What's the magnification ratio of this lens?
- 0.13×, so it's not a macro lens but will focus close enough for environmental portraits and detail shots at minimum focus distance.
- Does the RF 45mm f/1.2 STM have weather sealing?
- No weather sealing. Stick to dry conditions for field work; it's best kept out of rain and dusty environments.
| Specification | Value |
|---|---|
| Focal Length | 45mm |
| Max Aperture | f/1.2 |
| Min Aperture | f/16 |
| Mount | Canon RF, Canon RF-S |
| Stabilization | No |
| AF System | Yes |
| Min Focus Distance | 0.45 m (17.72") |
| Lens Type | Prime |
| Aperture Ring | No |
| Diaphragm Blades | 9 |
| Elements | 9 |
| Groups | 7 |
| Special Elements Coatings | 1 Aspherical |
| Maximum Magnification | 0.13× |
| Motor Type | Stepper Motor (STM) |
| Full Time Manual | No |
| Focus Method | Unit |
| Distance Scale | No |
| DOF Scale | No |
| Diameter | 78 mm (3.07") |
| Length | 75 mm (2.95") |
| Materials | Polycarbonate |
| Weather Sealing | No |
| Filter Thread | 67 mm |
| Hood Product Code | ES-73B (optional) |
| Weight | 346 g (0.76 lb) |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Canon |
|---|---|
| Filter Size | 67mm |
| Lens Mount | Canon EOS RF |
