Canon RF 135mm f/1.8 L IS USM vs Canon RF 50mm f/1.8 STM
Both are Canon RF mount primes for low-light — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Canon RF 135mm f/1.8 L IS USM | Canon RF 50mm f/1.8 STM |
|---|---|---|
| Focal length | 135mm | 50mm |
| Max aperture | f/1.8 | f/1.8 |
| Type | prime | prime |
| Coverage | full-frame | full-frame |
| Mount | Canon RF | Canon RF |
Which should you buy?
- the Canon RF 50mm f/1.8 STM (50mm) is wider — more in the frame for street and interiors; the Canon RF 135mm f/1.8 L IS USM (135mm) is tighter — more reach and compression for portraits
Where to buy
Check the Canon RF 135mm f/1.8 L IS USM price on Amazon →
Check the Canon RF 50mm f/1.8 STM price on Amazon →
FAQ
What's the difference between the Canon RF 135mm f/1.8 L IS USM and the Canon RF 50mm f/1.8 STM?
The Canon RF 135mm f/1.8 L IS USM is 135mm f/1.8 prime, full-frame; the Canon RF 50mm f/1.8 STM is 50mm f/1.8 prime, full-frame. Both fit the Canon RF mount.
Do the Canon RF 135mm f/1.8 L IS USM and Canon RF 50mm f/1.8 STM fit the same camera?
Yes — both are Canon RF mount lenses, so they fit Canon EOS R series (full-frame R5/R6/R8) and APS-C (R7/R10/R50).
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