Is the Canon RF 28–70mm f/2 Still Worth It in 2025? My Honest Take

When Canon first released the RF 28–70mm f/2L, it felt like a statement piece. A constant f/2 aperture on a zoom lens? It was bold, fast, and unlike anything else on the market. At the time, I was impressed by an aperture that wide on a zoom. But in 2025, after years of mirrorless refinement, is this lens still worth its weight, both literally and figuratively?

There’s no way around this: the RF 28–70mm f/2 is heavy. On an EOS R5, it feels more like I’m holding a cinema rig than a photo setup. At just over 3 pounds, it dwarfs most other lenses in my bag, and it doesn’t even have image stabilization.

But here’s the catch: that size does come with a certain professional presence. It feels substantial in the hand, and when I’m working in the studio or on commercial projects, I don’t mind the heft. It actually helps me slow down and shoot more deliberately. That said, I don't know that I would want to haul it around all day for street or travel work. One technique I've started using more recently is handheld off-camera flash—and when I don't have an assistant around, I hold the camera with one hand and the light in the other. Shooting with this beast one-handed in that fashion is not for the weak, and my wrist was cursing me afterward.

The trade-off you get for the weight is in the image quality. Once you see the shots, a lot of that weight becomes easier to justify.

The sharpness across the frame is stunning, even wide open. Bokeh is smooth and clean. Whether I was shooting at 28 mm or zooming to 70mm, I consistently got images that looked polished straight out of camera.

The f/2 aperture gives me more subject isolation than an f/2.8 zoom, which I didn't think I would lean into as someone who tends to stop down for most shots, but when I did go wide open, the isolation was impressive. On one test shoot, I went for a backlit look with a shallow depth of field, and the lens still maintained contrast and color accuracy. It feels like having three primes in one, without any noticeable dip in quality. That said, for the price point I would expect that level of performance from a lens.

The fast aperture isn’t just about aesthetics. It gives you a real, tangible low-light advantage—almost a full stop over most standard zooms. As someone who leans more toward zooms for the majority of my work, this gives me an extra edge without the need to switch to a faster prime.

Having f/2 across the full zoom range means I can keep my shutter speed where I want without sacrificing exposure. It’s the kind of flexibility that removes friction from the shoot. And while I do wish the lens had built-in stabilization, the IBIS on the R5 handled it well enough for most handheld shots.

As far as autofocus goes, I didn’t run into any issues. It’s quick, quiet, and accurate even in low-light conditions. Tracking was sticky, and I could move freely without second-guessing whether my subject was sharp.

I know some people might worry that a large zoom could slow down AF performance, but in real-world use, this lens never felt sluggish.

Compared to the 24–70mm f/2.8, I lose stabilization but gain that extra stop, which I notice in both light and depth. Compared to a 50mm f/1.2, the rendering is less dreamy, but the zoom flexibility makes up for it when time or location constraints don’t allow for lens swapping.

Could you build a prime trio for the same price or less? Sure. Since the release of the f/2, Canon has also released an f/2.8 version—not in the L series—with image stabilization and at a significantly lower price point, nearly a third of the cost, in fact. But switching lenses mid-shoot takes time and can interrupt momentum—especially in fast-paced commercial or editorial work. With this lens, I get consistency across focal lengths and the confidence that whatever I shoot will hold up under scrutiny. As it is, for the majority of my work I tend to rely more on zooms, which is where the performance is noticed most. I also don't tend to shoot wide open unless I have to, but in those moments I'm happy to have the extra, nearly full stop. Sometimes I wish I could be just a little wider, but that’s when you’d reach for a wide zoom anyway, and this is more of a nitpick than anything. The other thing I don't always consider when trying new gear is that this actually became a joy to shoot with—I found myself wanting to keep picking it up.

If you’re a portrait, fashion, or commercial photographer who works in controlled settings or needs to move fast without switching lenses, this lens could easily become your go-to tool. It’s reliable, delivers fantastic results, and adapts to many scenarios with minimal compromise.

But if you prioritize portability, shoot a lot of handheld video, or like to pack light, this probably isn’t the lens for you. It’s not something I’d take on a vacation or use outside of my work. This lens is a beast, but if your work demands a fast, reliable catch-all like this, it could be for you.

The question is: Is this lens worth it in 2025—especially given the price point? For certain shoots, yes. I rented it for a few days and will be renting it again, but I'll need more tests with different lenses to land on what’s perfect for me. Yes, it’s heavy. Yes, it’s expensive. But what you get in return is something rare: a zoom that truly competes with primes and helps you work faster without compromising image quality.

And five years after launch, there’s still nothing else quite like it.