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Canon RF-S 18-45mm f/4.5-6.3 IS STM Autofocus APS-C Lens for Canon RF-Mount, Black {49}
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$56.00
Canon RF-S 18-45mm f/4.5-6.3 IS STM: The kit lens that earns its place.
At 130 grams and 44.3mm collapsed, this is one of the lightest zoom options in the Canon RF ecosystem. The retractable design keeps the package genuinely pocketable alongside an APS-C body, covering a 29-72mm equivalent range that handles environmental portraits, street scenes, and travel snapshots without a lens change. Two aspheric elements and Canon's Super Spectra Coating keep contrast up and flare down across that zoom range.
The STM stepping motor is quiet enough for run-and-gun video work where ambient audio matters. Optical IS delivers up to 4 stops of correction on its own, and when paired with an IBIS-equipped EOS R body, Coordinated IS extends that to 6 stops. That kind of handheld latitude at 45mm in dim light is worth a lot for shooters who don't want to carry a tripod everywhere. The 20cm minimum focusing distance also gives you some close-in capability for food or product shots when you're traveling light.
Dual Pixel CMOS AF covers 100% of the frame on APS-C sensors, so subject tracking and face detection work across the full image area. The 49mm filter thread is a common size, and the 68.9mm maximum diameter keeps the footprint small enough that this lens disappears on an EOS R50 or R10 body.
Who It's For
Travel photographers who want one lens in a daypack will appreciate the retractable design and 130g weight, this rides in a jacket pocket without complaint. Video creators working in quiet environments benefit directly from the STM motor's near-silent focus pulls, which keep ambient audio clean. Street and documentary shooters get full Dual Pixel CMOS AF coverage across the APS-C frame with the 29-72mm equivalent range covering most social situations. New EOS R APS-C owners pairing this with an IBIS body like the R50 can pull 6 stops of Coordinated IS, making low-light handheld work genuinely practical.
Key Features
- RF-S mount lens designed for Canon APS-C mirrorless cameras
- 18-45mm focal length, 29-72mm equivalent on APS-C
- f/4.5-6.3 maximum aperture with f/32 minimum
- 4 stops optical IS, up to 6 stops with Coordinated IS on IBIS bodies
- STM stepping motor for silent autofocus and smooth video focus
- Two aspheric elements with Canon Super Spectra Coating for contrast and flare control
- 130 grams with retractable design and 49mm filter thread
FAQ
- What's the actual focal length range on an APS-C body versus full-frame EOS R?
- On APS-C (R50, R10), it's 18-45mm native. On full-frame EOS R cameras, it automatically engages 1.6x crop mode, giving you 29-72mm equivalent coverage - same framing, just electronically cropped.
- Does the Coordinated IS really give 6 stops?
- Yes, but only when paired with an IBIS-equipped EOS R body. The lens itself delivers 4 stops; the camera's sensor-shift adds another 2 for a combined 6 stops. On an R50 or R10 (no IBIS), you're limited to the lens's 4 stops.
- How quiet is the STM autofocus for video?
- Quiet enough that you won't pick up focus motor noise in on-camera mic recordings during dialogue or ambient sound capture. The lead screw stepping motor is designed specifically for video work where audio clarity matters.
- Can I use this on a full-frame EOS R5 or R6?
- Yes. It automatically crops to 1.6x, covering 80% x 80% of the frame with Dual Pixel CMOS AF. You lose the outer frame but keep full autofocus coverage and get the benefit of IBIS stacking with the lens's optical IS for 6 stops total.
- Is 20cm minimum focus distance useful for close work?
- For a kit zoom, yes. It handles food, product flatlay, and small object shots without extension tubes, though you're not getting macro-level magnification. It's a bonus, not the primary strength.
- Why two aspheric elements instead of more?
- Keeps the lens compact and lightweight. Two aspherics plus Canon Super Spectra Coating are enough to control aberrations and flare across the 29-72mm equivalent range without bloating the design or weight (130 grams total).
- What's the filter thread size?
- 49mm, which is standard across a lot of APS-C and entry full-frame gear. Your existing filters will thread on without step-up rings.
| Specification | Value |
|---|---|
| Focal Length | 18-45mm |
| Max Aperture | f/4.5 |
| Min Aperture | f/32 |
| Mount | Canon RF |
| Filter Size | 49mm |
| Lens Format | APS-C |
| Aperture Range | f/4.5-6.3 to f/32 |
| Minimum Focusing Distance | 7.9" / 20 cm |
| Lens Groups | 7 |
| Lens Elements | 7 |
| Length | 1.7" / 44.3 mm |
| Maximum Diameter | 2.7" / 68.9 mm |
| Angle Of View | 74° 20' to 33° 40' |
| Equivalent Focal Length 35mm | 29-72mm |
| Package Weight | 0.505 lb |
| Box Dimensions | 5.3 x 4 x 3.7" |
| Weight | 4.6 oz / 130 g |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Canon |
|---|---|
| Filter Size | 49mm |
| Focus Type | Autofocus (lens motor) |
| Lens Mount | Canon EOS RF |
| Lens Type | Standard / Normal |
| Max Focal Length | 45mm |
| Min Focal Length | 18mm |
