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
OM System
M.Zuiko Digital ED 17mm F1.2 PRO
Micro Four Thirds Mount
M.Zuiko Digital ED 17mm F1.2 PRO — 17mm f/1.2 for Micro Four Thirds, a popular choice in the om-system lineup.
$1,199
Launch priceReleased Nov 2017
RF 24-70mm F2.8L IS USM is 1.8 years newer.
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Wins
RF 24-70mm F2.8L IS USM
Wins
M.Zuiko Digital ED 17mm F1.2 PRO
Which would you choose?
TL;DR — Key differences
- ARF 24-70mm F2.8L IS USM has higher OIS effectiveness (5 stops vs 0 stops)
- BM.Zuiko Digital ED 17mm F1.2 PRO has lower Max aperture (Wide) (f/1.2 vs f/2.8)
- BM.Zuiko Digital ED 17mm F1.2 PRO has lower Max aperture (Tele) (f/1.2 vs f/2.8)
- BM.Zuiko Digital ED 17mm F1.2 PRO has lower Weight (390 g vs 900 g)
- ARF 24-70mm F2.8L IS USM has higher Max magnification (0.3 × vs 0.15 ×)
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
M.Zuiko Digital ED 17mm F1.2 PRO
⌀68 × 87 mm
390 g (0.86 lb / 13.76 oz)
RF 24-70mm F2.8L IS USM is 38mm longer and 20mm wider than M.Zuiko Digital ED 17mm F1.2 PRO.
RF 24-70mm F2.8L IS USM is 510 g heavier than M.Zuiko Digital ED 17mm F1.2 PRO.
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
- ✓
Max magnification
0.3 × vs 0.15 × — higher is better
Reasons to choose the M.Zuiko Digital ED 17mm F1.2 PRO
- ✓
Special elements
Adds 1 Aspherical, 1 DSA, 3 ED…
- ✓
Max aperture (Wide)
f/1.2 vs f/2.8 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/2.8 — lower is better
- ✓
Weight
390 g vs 900 g — lower is better
- ✓
Length
87 mm vs 125 mm — lower is better
- ✓
Diameter
68.2 mm vs 88 mm — lower is better
- ✓
Min focus distance
20 cm vs 21 cm — lower is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
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
M.Zuiko Digital ED 17mm F1.2 PRO
Pros
- ✓Bright f/1.2 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
- ✓Lightweight design easy to carry all day
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the RF 24-70mm F2.8L IS USM and M.Zuiko Digital ED 17mm F1.2 PRO at major authorized retailers.
Canon RF 24-70mm F2.8L IS USM
OM System M.Zuiko Digital ED 17mm F1.2 PRO
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed August 2026.