Canon RF 45mm f/1.2 STM Review: A Characterful Prime at an Unbeatable Price

The Canon RF 45mm f/1.2 STM is a fascinating lens that defies easy categorization. It’s impossibly light for its specifications, remarkably affordable for a full-frame RF lens with an f/1.2 aperture, and offers creative possibilities that simply don’t exist elsewhere at this price point. However, it comes with optical characteristics that will either charm or frustrate, depending on your perspective.

At $599 / £479 / AU$699.95, this lens represents something of a bargain in Canon’s RF lineup. It’s significantly cheaper than Canon’s premium L-series glass, yet offers a maximum aperture that’s typically reserved for much more expensive optics. What’s more, no other manufacturer currently offers an autofocus full-frame lens with f/1.2 capabilities at this price point, making it a unique proposition in the market.

However, the RF 45mm f/1.2 is very much a “character lens” rather than a technically perfect optic. The bokeh at f/1.2 exhibits a distinctive swirling pattern with pronounced cat’s-eye shapes toward the edges of the frame. Some photographers will love this vintage-inspired look, while others may find it too busy or distracting. Additionally, chromatic aberration is quite pronounced at the widest aperture, even with in-camera corrections applied. You’ll definitely want to become familiar with your editing software’s de-fringing tools if you shoot wide open frequently.

The lens construction is predominantly plastic, though it feels solid and well-built in hand. Canon has omitted weather sealing and doesn’t include a lens hood, both of which are compromises made to hit this attractive price point. The absence of weather sealing is understandable given the cost, but requiring a separate purchase for the hood feels slightly stingy.

Where this lens truly shines is in its weight—or rather, its lack thereof. At just 12.2oz / 346g, it’s remarkably light for a lens with an f/1.2 aperture. This makes it an excellent companion for Canon’s mirrorless bodies, particularly the EOS R6 Mark II, with which it pairs beautifully. The combination feels balanced and portable, encouraging you to take it everywhere.

Optically, the center sharpness is excellent across all apertures, and stopping down yields impressive edge-to-edge performance. The wide maximum aperture enables exceptional low-light performance and beautiful subject separation, making it particularly well-suited for environmental portraits where you want to isolate your subject against a softly rendered background.

Autofocus performance using the STM stepping motor is reliable and quick enough for most situations, though it’s not as fast or silent as Canon’s higher-end Nano USM systems. There’s a subtle whining noise during focusing, and a small amount of focus breathing when working at close distances. These factors might give videographers pause, though for still photography, the autofocus is more than adequate.

In summary, the Canon RF 45mm f/1.2 STM is a lens that will frustrate perfectionists while delighting those who appreciate character and creativity in their optics. It’s not a lens that will make Nikon or Sony users switch systems, but it’s certainly unique and praiseworthy. If you’re looking for flawless technical performance, look elsewhere. But if you want a lightweight, affordable lens that opens up creative possibilities unavailable at this price point, the RF 45mm f/1.2 deserves serious consideration.

Tags: #Canon #RF45mm #f12STM #CanonLens #FullFrame #Mirrorless #PortraitLens #Bokeh #CharacterLens #AffordableOptics #CreativePhotography #TechReview #CameraGear #PhotographyEquipment #LensReview

Viral Sentences:

• “This lens is a beautiful mess of optical character”
• “Impossibly light for an f/1.2 lens—it feels like magic”
• “The bokeh swirls will either make you fall in love or run away screaming”
• “Chromatic aberration so wild it’s practically a feature”
• “A lens hood sold separately? That’s just mean, Canon”
• “For $600, you’re getting an aperture usually found on $2000 lenses”
• “It’s not perfect, but it’s perfectly unique”
• “The cat’s-eye bokeh effect is either vintage charm or optical crime”
• “This lens weighs less than your morning coffee”
• “Canon’s bold experiment in affordable f/1.2 territory”

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