One focal length, and usually the widest aperture the money buys · review
Canon’s affordable f/1.2 standard prime for RF bodies, made possible by digital distortion correction, sold by Amazon.com for about $429.
f/1.2 lenses usually cost well over $1,000. Canon’s RF 45mm costs about $429 by relying on digital distortion correction and an STM motor instead of a larger, heavier design.
45 mm is close to how the eye sees a scene on full frame. It suits everyday photos, travel and environmental portraits.
Canon pitches the f/1.2 aperture for faster shutter speeds in dim light and strong subject separation.
Amazon.com sold it at about $429.
Prices quoted in this text were read on November 2, 2026. The live price is at the top of the page.
| Mount | Canon RF, full frame |
|---|---|
| Focal length | 45 mm |
| Aperture | f/1.2 |
| Autofocus | STM |
| Optics | One PMo aspheric element, Canon’s first in an f/1.2 lens |
| Design | Compact, relying on in-camera digital distortion correction |
| Focus | Auto and manual |
| Amazon reference | B0FZWB8D2S |
Canon says the large RF mount, a short back focus and digital distortion correction let it build a compact f/1.2 lens at a moderate price.
An equivalent focal length is a calculation that describes the field of view on a full-frame camera; the engraved focal length never changes. On an R50 or R10, it frames like about 72 mm, a short portrait lens.
Yes. It lets in more light than an f/1.8 lens, so you can keep the shutter speed up in a dim room.
At $429, it is the 6 cheapest of the 8 models in this category published here.
7.9/ 10
The easiest way into f/1.2 on Canon RF. Choose it if low light and soft backgrounds matter more than lab-perfect corners.
photo equipment from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | Mount | Focal length | Aperture |
|---|---|---|---|---|
| Canon RF 45mm F1.2 STM | $429 | Canon RF, full frame | 45 mm | f/1.2 |
| Samyang AF 75mm F1.8 FE | $314 | Sony E, full frame and APS-C | 75 mm | f/1.8 |
| Panasonic Lumix G 25mm F1.7 | $179 | Micro Four Thirds (Panasonic and Olympus/OM System) | 25 mm; Panasonic gives 50 mm equivalent | f/1.7 to f/22 |
| Nikon AF-S 50mm f/1.8G | $167 | Nikon F, FX (full frame); works on DX | 50 mm | f/1.8 |
This model is listed on Amazon.com, at ≈ $429 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on November 2, 2026.
Canon RF owners who want a bright everyday lens for low light and soft backgrounds.
Specifications: the manufacturer sheet for photo equipment and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Canon EF and EF-S mount · 85mm · f/1.8 · fully manual focus and aperture · no electronic contacts · 6 rounded blades · internal focus
A fully manual 85 mm f/1.8 portrait lens for Canon DSLRs at about $97. It has no electronic contacts, so the camera must be set to manual exposure.
Best for: Canon DSLR owners who want to try 85 mm portraits cheaply and are happy to focus by hand.
≈ $97
Nikon F, FX · 50mm · f/1.8 · 47° angle of view on FX · 0.45 m (1.48 ft) close focus · 0.15× · SWM · 58mm filter
Nikon’s classic 50 mm f/1.8 for F-mount DSLRs, with 10,193 ratings at 4.8 stars and a price around $167.
Best for: Nikon DSLR owners buying their first fast prime.
≈ $167
Micro Four Thirds · 25mm (50mm equivalent, per Panasonic) · f/1.7 to f/22 · 47° diagonal · 125 g (4.4 oz) · 46mm filter · 0.25 m close focus
A light 25 mm f/1.7 for Micro Four Thirds bodies, Panasonic and Olympus, that frames like a 50 mm on full frame. It ships from Amazon Germany at about $179.
Best for: Micro Four Thirds owners who want a small, bright standard lens.
≈ $179
