Canon RF-S 10-18mm f/4.5-6.3 IS STM vs Canon RF7-14mm F2.8-3.5 L Fisheye STM
The bottom line
Similar coverage, different speed: the Canon RF7-14mm F2.8-3.5 L Fisheye STM opens to f/2.8 versus the Canon RF-S 10-18mm f/4.5-6.3 IS STM's f/4.5 — more light and shallower background blur. The Canon RF-S 10-18mm f/4.5-6.3 IS STM gives that up to stay lighter (150g (5.3 oz)) and cheaper ($299). It comes down to how much you value that extra brightness.
Choose the Canon RF-S 10-18mm f/4.5-6.3 IS STM if…
- ✓You're on a budget — $299 vs $1,899 leaves more for other gear.
- ✓You value portability — at 150g (5.3 oz) it's lighter than the 476g (1.05 lb) alternative for travel and all-day carry.
Choose the Canon RF7-14mm F2.8-3.5 L Fisheye STM if…
- ✓You want more light and background blur — f/2.8 is faster than f/4.5, better for low light and subject separation.
- ✓You shoot wide — it starts at 7mm vs 10mm for landscapes, interiors and architecture.
- ✓You work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Where they differ
- ›Aperture: the Canon RF7-14mm F2.8-3.5 L Fisheye STM opens to f/2.8 vs the Canon RF-S 10-18mm f/4.5-6.3 IS STM's f/4.5 — more light and shallower depth-of-field.
- ›Focal range: Canon RF-S 10-18mm f/4.5-6.3 IS STM is 10-18mm, Canon RF7-14mm F2.8-3.5 L Fisheye STM is 7-14mm — different framing and reach.
- ›Price: the Canon RF-S 10-18mm f/4.5-6.3 IS STM is $299, $1,600 under the Canon RF7-14mm F2.8-3.5 L Fisheye STM.
- ›Weight: the Canon RF-S 10-18mm f/4.5-6.3 IS STM is 150g (5.3 oz) vs 476g (1.05 lb) — you'll feel the difference handheld.
- ›Durability: the Canon RF7-14mm F2.8-3.5 L Fisheye STM is weather-sealed; the other isn't.
Frequently asked
Is the Canon RF-S 10-18mm f/4.5-6.3 IS STM or the Canon RF7-14mm F2.8-3.5 L Fisheye STM better?
Similar coverage, different speed: the Canon RF7-14mm F2.8-3.5 L Fisheye STM opens to f/2.8 versus the Canon RF-S 10-18mm f/4.5-6.3 IS STM's f/4.5 — more light and shallower background blur. The Canon RF-S 10-18mm f/4.5-6.3 IS STM gives that up to stay lighter (150g (5.3 oz)) and cheaper ($299). It comes down to how much you value that extra brightness.
Who should choose the Canon RF-S 10-18mm f/4.5-6.3 IS STM?
Choose the Canon RF-S 10-18mm f/4.5-6.3 IS STM if you're on a budget — $299 vs $1,899 leaves more for other gear. Choose it if you value portability — at 150g (5.3 oz) it's lighter than the 476g (1.05 lb) alternative for travel and all-day carry.
Who should choose the Canon RF7-14mm F2.8-3.5 L Fisheye STM?
Choose the Canon RF7-14mm F2.8-3.5 L Fisheye STM if you want more light and background blur — f/2.8 is faster than f/4.5, better for low light and subject separation. Choose it if you shoot wide — it starts at 7mm vs 10mm for landscapes, interiors and architecture. Choose it if you work outdoors — it's weather-sealed against dust and moisture; the other isn't.
What is the main difference between the Canon RF-S 10-18mm f/4.5-6.3 IS STM and the Canon RF7-14mm F2.8-3.5 L Fisheye STM?
Aperture: the Canon RF7-14mm F2.8-3.5 L Fisheye STM opens to f/2.8 vs the Canon RF-S 10-18mm f/4.5-6.3 IS STM's f/4.5 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 10-18mm | 7-14mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 12 | − |
| Optical Groups | 9 | − |
| Aperture & Iris | ||
| Maximum Aperture | f/4.5 | f/2.8 |
| Minimum Aperture | f/22 | − |
| Aperture Blades | 7 | − |
| Rounded Aperture | Yes | No |
| Coverage & Angle | ||
| Format Coverage | APS-C | Full-Frame |
| Lens Mount | Canon RF | Canon RF |
| Angle of View | 110° – 76° | 190° – 180° |
| 35mm Equivalent | 16-29mm | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | STM | STM |
| Focus Limiter | No | No |
| AF/MF Switch | No | Yes |
| Min Focus Distance | 12 cm | 15 cm |
| Max Magnification | 0.43x | − |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | Yes | Yes |
| General | ||
| Price (MSRP) | $299 | $1,899 |
| Filter Size | 55mm | − |
| Diameter | 68.4mm | − |
| Length | 48.8mm | − |
| Weight | 150g (5.3 oz) | 476g (1.05 lb) |
| Weather Sealed | No | Yes |
| Tripod Collar | No | No |
