Canon quietly dropped one of the more interesting lenses in its RF lineup, and it hasn’t gotten nearly enough attention.
The RF 45mm F1.2 STM is proof that a fast aperture prime doesn’t need to cost a fortune or weigh down your bag.
Let’s start with the number that matters most: 346 grams. That’s the weight, and it makes this the lightest f/1.2 lens Canon has ever put out for the RF mount, coming in under 400g when most fast primes in this range feel like carrying a small brick. Pair it with an R8 or R10 and you barely notice it’s there until you look through the viewfinder and see what f/1.2 actually does to a background.
The 45mm focal length sits right in that sweet spot close to how the human eye sees things. It’s not quite a classic 50mm, but close enough that portraits look natural rather than stretched or compressed. Street photographers like it for the same reason.
You can shoot from the hip and the framing still feels honest.
Optically, Canon included one aspherical element, something the company says is a first for one of its f/1.2 lenses, aimed at cutting down aberrations without adding bulk. The nine-blade aperture produces the kind of round, creamy bokeh that makes subjects pop off the background, which is really the whole reason anyone buys an f/1.2 lens in the first place.
Autofocus runs on Canon’s STM system, a lead screw-type motor that’s quiet and smooth rather than blazing fast. For portraits, video, and everyday shooting it’s more than capable. If you’re chasing kids running across a soccer field or birds in flight, this isn’t your lens. But that was never the point of it.
Build quality leans minimalist. There’s an AF/MF switch, a customisable control ring, and a metal mount that feels solid despite the lens being so light. Minimum focus distance sits at 45cm, giving you some room to get close for detail shots without needing a dedicated macro lens.
Here’s why it’s actually worth buying. Fast primes usually mean trade-offs: heavy glass, steep prices, or slow autofocus that fights you in real shooting situations.
This lens gets the balance right. You get genuine f/1.2 performance, that dreamy shallow depth of field everyone chases for portraits, and low-light capability that lets you shoot in a dim restaurant without cranking your ISO into noisy territory. And you get all of it in a lens that costs a fraction of Canon’s professional L-series glass. For anyone building out an R-series kit who wants one lens that does portraits, street work, and low light without draining their bank account, this is close to a no-brainer.
If you’re a hybrid shooter doing both photo and video, it earns its place too. The compact size means it doesn’t throw off the balance of smaller bodies like the R8, and the quiet STM focus motor won’t ruin your audio the way older ring-type motors sometimes do.
Now, alternatives worth weighing. If you want a more traditional focal length, the RF 50mm F1.8 STM costs less and gives up some speed but is razor sharp and even lighter.
Photographers who want Canon’s absolute best glass, and don’t mind the extra weight and price, should look at the RF 50mm F1.2L, which sharpens up faster and focuses quicker thanks to a Nano USM motor. And if versatility matters more than a single fast aperture, the RF 24-70mm F2.8L covers this focal length and dozens of others, though obviously without that f/1.2 shallow depth of field magic.
For most people though, the RF 45mm F1.2 STM hits a rare sweet spot of price, weight, and creative control that’s hard to beat.
Cost of lens in India : MRP Rs. 42 495.00/U
Photo Source : Canon India
