Canon
RF 24-70mm F2.8L IS USM
Canon RF Mount
The cornerstone zoom for Canon mirrorless, featuring 5 stops of optical image stabilization.
$2,399
Launch priceReleased Aug 2019
Canon
RF 50mm F1.8 STM
Canon RF Mount
The affordable nifty fifty for RF — compact, sharp, and perfect for beginners exploring prime lenses.
$199
Launch priceReleased Nov 2020
RF 50mm F1.8 STM is 1.3 years newer.
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Wins
RF 24-70mm F2.8L IS USM
Wins
RF 50mm F1.8 STM
Which would you choose?
TL;DR — Key differences
- ARF 24-70mm F2.8L IS USM has higher OIS effectiveness (5 stops vs 0 stops)
- BRF 50mm F1.8 STM has lower Weight (160 g vs 900 g)
- BRF 50mm F1.8 STM has lower Length (41 mm vs 125 mm)
- BRF 50mm F1.8 STM has lower Max aperture (Wide) (f/1.8 vs f/2.8)
- BRF 50mm F1.8 STM has lower Max aperture (Tele) (f/1.8 vs f/2.8)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to share
RF 24-70mm F2.8L IS USM
⌀88 × 125 mm
900 g (1.98 lb / 31.75 oz)
Credit card
85.6 × 54 mm
for scale
RF 50mm F1.8 STM
⌀70 × 41 mm
160 g (0.35 lb / 5.64 oz)
RF 24-70mm F2.8L IS USM is 84mm longer and 18mm wider than RF 50mm F1.8 STM.
RF 24-70mm F2.8L IS USM is 740 g heavier than RF 50mm F1.8 STM.
Diameter (⌀) is the maximum barrel width; length is measured from the mount to the front of the lens.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose the RF 24-70mm F2.8L IS USM
- ✓
Special elements
Adds 3 Aspherical, 3 UD
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only RF 24-70mm F2.8L IS USM supports it
- ✓
Weather sealing
Only RF 24-70mm F2.8L IS USM supports it
- ✓
Min focus distance
21 cm vs 30 cm — lower is better
- ✓
Max magnification
0.3 × vs 0.25 × — higher is better
Reasons to choose the RF 50mm F1.8 STM
- ✓
Weight
160 g vs 900 g — lower is better
- ✓
Length
41 mm vs 125 mm — lower is better
- ✓
Max aperture (Wide)
f/1.8 vs f/2.8 — lower is better
- ✓
Max aperture (Tele)
f/1.8 vs f/2.8 — lower is better
- ✓
Diameter
70 mm vs 88 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Control ring
Both support control ring
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 24-70mm F2.8L IS USM
Pros
- ✓Built-in optical image stabilization (up to 5 stops)
- ✓Excellent L-series sharpness and build quality
- ✓Fast and silent Nano USM focus motor
- ✓Very low chromatic aberration
Cons
- –Heavier than competitive options (900g)
- –Pricey entry threshold
- –Minor barrel distortion at 24mm
RF 50mm F1.8 STM
Pros
- ✓Incredible value at under $200
- ✓Very compact and lightweight (only 160g)
- ✓Sharp enough for most everyday photography
- ✓Silent STM motor ideal for video
Cons
- –Plastic build feels basic
- –No weather sealing
- –Narrow maximum aperture vs L-series primes
Decided which one is right for you?
Compare live prices for the RF 24-70mm F2.8L IS USM and RF 50mm F1.8 STM at major authorized retailers.
Canon RF 24-70mm F2.8L IS USM
Canon RF 50mm F1.8 STM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed October 2026.