Canon RF 18-45mm f/4.5-6.3 IS STM
The optical design incorporates two aspherical elements and Super Spectra Coating to suppress aberrations and flare, while the 4-stop Optical Image Stabilizer ensures sharp handheld results. It stands out as a compact, bundled kit lens that includes a 64GB card, filter kit, and backpack, offering immediate out-of-the-box usability for APS-C RF-mount bodies. This lens is best for beginner photographers using cameras like the EOS R10 or R50 who need a stabilized, general-purpose zoom for portraits and everyday shooting.
Snapshot
The 30-Second Version
A surprisingly fun kit lens with no right to be this good at macro. Just don't expect it to see in the dark.
Pros & Cons
Pros
- Best-in-class macro capability for a kit zoom 97th
- Compact and retractable design is perfect for travel 93rd
- Fast, quiet STM autofocus is great for video 87th
- Effective 4-stop stabilization saves your shaky shots 78th
Cons
- Slow variable aperture is a pain in low light
- Plasticky build feels a bit cheap
- Landscape performance is a real weak spot
- No weather sealing, so keep it out of the rain
The proof
Performance
The biggest surprise here is the macro performance. We're talking 96th percentile in our database, which is just wild for a cheap kit zoom. You can get ridiculously close to your subject, and the STM autofocus is quick and silent enough that you won't scare off a bug. The 4-stop stabilization is also a standout, making it easy to get sharp handheld shots at slower shutter speeds. On the flip side, the variable aperture is a buzzkill. You start at f/4.5 and quickly hit f/6.3 as you zoom, which means this lens struggles indoors or in the evening without cranking your ISO.
Specifications
Full Specifications
Optics
| Type | Zoom |
| Focal Length Min | 18 |
| Focal Length Max | 45 |
| Aspherical Elements | 2 |
| Coating | Super Spectra Coating |
Aperture
| Max Aperture | f/4.5 |
| Min Aperture | 4.5-6.3 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Canon RF-S |
| Format | APS-C |
| Weight | 0.4 kg / 0.9 lbs |
| Filter Thread | 49 |
AF & Stabilization
| AF Type | STM |
| Stabilization | Yes |
| Stabilization Stops | 4 |
Focus
| Min Focus Distance | 45 |
vs Competition
The most direct rival is the Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR. It's the same idea, a tiny collapsible zoom, but the Nikon is even smaller and starts a bit wider at 16mm. The Canon fights back with that killer macro score. The Sony E PZ 16-50mm f/3.5-5.6 OSS is another obvious competitor with a power zoom feature that video shooters will love, but its optical quality is a step behind. If you're serious about image quality and low light, you'll quickly outgrow all of these and start eyeing a constant aperture zoom like the Tamron 28-75mm f/2.8, but that's a much bigger investment.
| Spec | Canon RF 18-45mm f/4.5-6.3 IS STM | Tamron Di III VC 28-300mm f/4-7.1 VXD | Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR | Sony E PZ 16-50mm f/3.5-5.6 OSS | Viltrox Air AF 9mm f/2.8 | Panasonic LUMIX S S-R2060 |
|---|---|---|---|---|---|---|
| Focal Length | 18-45mm | 28-300mm | 16-50mm | 16-50mm | 9mm | 20-60mm |
| Max Aperture | f/4.5 | f/4 | f/3.5 | f/3.5 | f/9 | f/3.5 |
| Mount | Canon RF-S | Sony E | Nikon Z | Sony E | Fujifilm X | L-Mount |
| Stabilization | true | true | true | true | true | false |
| Weather Sealed | false | true | false | true | false | true |
| Weight (g) | 413 | 590 | 135 | 107 | 130 | 350 |
| AF Type | STM | VXD linear motor | Stepping Motor | Autofocus | STM | stepping motor |
| Lens Type | zoom | zoom | zoom | zoom | wide-angle | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Canon RF 18-45mm f/4.5-6.3 IS STM | 86.9 | 54.7 | 63.4 | 96.5 | 57.1 | 55.3 | 77.5 | 34.5 | 93.4 |
| Tamron Di III VC 28-300mm f/4-7.1 VXD Compare | 98 | 77.6 | 65.2 | 85.8 | 96.7 | 65.7 | 97.7 | 56 | 82.4 |
| Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR Compare | 86.9 | 75.2 | 92.7 | 45.1 | 74.1 | 77 | 83.3 | 81.2 | 95.3 |
| Sony E PZ 16-50mm f/3.5-5.6 OSS Compare | 53.8 | 75.2 | 98.5 | 43.9 | 68.3 | 77 | 83.3 | 81.2 | 93.4 |
| Viltrox Air AF 9mm f/2.8 Compare | 86.9 | 45.9 | 93.5 | 91.1 | 85.1 | 48.8 | 33.6 | 89.8 | 82.4 |
| Panasonic LUMIX S S-R2060 Compare | 86.9 | 84.8 | 81.9 | 67.2 | 78.6 | 77 | 81.9 | 70 | 36.8 |
Price
Value & Pricing
Pricing on this thing is all over the map, from $117 to $349 depending on the bundle. The sweet spot is finding it as part of a camera kit where it's practically free. If you're buying it standalone, don't pay more than $150. The bundles with a filter kit and a cheap tripod are mostly junk you'll throw in a drawer, so don't let a "free" backpack trick you into overpaying.
Amazon 3 offers From $117
Newegg 1 offer From $349
Price History
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Overview
The Canon RF-S 18-45mm f/4.5-6.3 IS STM is the lens you'll probably get in a kit with your R10 or R50, and honestly, that's the best way to buy it. It's a compact, retractable zoom that covers the basics from wide-angle to short telephoto, and it does a surprisingly good job for its size. The one thing to know? It's a solid, lightweight everyday lens that punches above its weight for close-up shots, but don't expect it to set the world on fire when the light gets dim.
Common Questions
Q: Is this lens good for shooting video?
For casual video, absolutely. The STM autofocus is smooth and nearly silent, so it won't ruin your audio. The stabilization helps keep handheld footage steady. Just remember the slow aperture means you'll need decent lighting.
Q: Will this work on a full-frame Canon R camera?
It'll mount, but you'll be stuck in crop mode with a lower resolution image. This lens is designed for APS-C bodies like the R10, R50, and R7. For a full-frame R camera, you're better off with an RF 24-50mm or 24-105mm.
Q: Can I use filters on this lens?
Yep, it takes standard 49mm screw-on filters. A circular polarizer is a smart first buy to cut through reflections and make skies pop, especially since you'll be shooting outdoors a lot with this lens.
Who Should Skip This
If you're shooting a lot of landscapes or interiors, this isn't your lens. The soft corners and slow aperture will drive you nuts. Grab a fast prime like the RF 35mm f/1.8 instead, or save up for a wider, sharper zoom.
Verdict
This is a perfect first lens. It's small, light, and the image quality is good enough to learn on without getting in your way. The macro ability is a genuinely fun bonus that you won't find on most other starter zooms. Just know its limits. It's a daytime, outdoor lens. Push it into a dimly lit room and you'll be fighting for light. If you can get it in a kit, do it. If you're buying it separately, hunt for a deal.