Canon
RF 100mm F2.8L Macro IS USM
Canon RF Mount
Canon's first RF macro with 1.4x magnification and spherical aberration control for stunning close-up detail.
$1,399
Launch priceReleased Apr 2021
OM System
M.Zuiko Digital ED 90mm F3.5 Macro IS PRO
Micro Four Thirds Mount
World-first 2:1 macro telephoto with 5-axis Sync IS and IP53 weather sealing.
$1,499
Launch priceReleased Feb 2023
M.Zuiko Digital ED 90mm F3.5 Macro IS PRO is 1.8 years newer.
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Wins
RF 100mm F2.8L Macro IS USM
Wins
M.Zuiko Digital ED 90mm F3.5 Macro IS PRO
TL;DR — Key differences
- BM.Zuiko Digital ED 90mm F3.5 Macro IS PRO has lower Weight (453 g vs 730 g)
- BM.Zuiko Digital ED 90mm F3.5 Macro IS PRO has higher Max magnification (2 × vs 1.4 ×)
- BM.Zuiko Digital ED 90mm F3.5 Macro IS PRO has higher OIS effectiveness (7 stops vs 5 stops)
- ARF 100mm F2.8L Macro IS USM has lower Max aperture (Wide) (f/2.8 vs f/3.5)
- ARF 100mm F2.8L Macro IS USM has lower Max aperture (Tele) (f/2.8 vs f/3.5)
Key specs at a glance
Size and weight, to scale
RF 100mm F2.8L Macro IS USM
⌀82 × 148 mm
730 g (1.61 lb / 25.75 oz)
Credit card
85.6 × 54 mm
for scale
M.Zuiko Digital ED 90mm F3.5 Macro IS PRO
⌀69 × 136 mm
453 g (1.00 lb / 15.98 oz)
RF 100mm F2.8L Macro IS USM is 12mm longer and 13mm wider than M.Zuiko Digital ED 90mm F3.5 Macro IS PRO.
RF 100mm F2.8L Macro IS USM is 277 g heavier than M.Zuiko Digital ED 90mm F3.5 Macro IS 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 100mm F2.8L Macro IS USM
- ✓
Special elements
Adds 1 UD
- ✓
Max aperture (Wide)
f/2.8 vs f/3.5 — lower is better
- ✓
Max aperture (Tele)
f/2.8 vs f/3.5 — lower is better
Reasons to choose the M.Zuiko Digital ED 90mm F3.5 Macro IS PRO
- ✓
Special elements
Adds 2 Super ED, 2 ED, 1 Aspherical
- ✓
Custom function button
Only M.Zuiko Digital ED 90mm F3.5 Macro IS PRO supports it
- ✓
Weight
453 g vs 730 g — lower is better
- ✓
Max magnification
2 × vs 1.4 × — higher is better
- ✓
OIS effectiveness
7 stops vs 5 stops — higher is better
- ✓
Diameter
69 mm vs 82 mm — lower is better
- ✓
Min focus distance
22.4 cm vs 26 cm — lower is better
- ✓
Length
136 mm vs 148 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
Weather sealing
Both support weather sealing
Control ring
Both support control ring
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 100mm F2.8L Macro IS USM
Pros
- ✓1.4x maximum magnification (industry-leading for macro)
- ✓Spherical Aberration Control for adjustable bokeh
- ✓5-stop Hybrid IS for handheld macro
- ✓Doubles as a sharp 100mm portrait lens
Cons
- –Complex SA control ring adds learning curve
- –Heavy for macro work (730g)
- –Premium macro pricing
M.Zuiko Digital ED 90mm F3.5 Macro IS PRO
Pros
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
- ✓Native Micro Four Thirds mount compatibility
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the RF 100mm F2.8L Macro IS USM and M.Zuiko Digital ED 90mm F3.5 Macro IS PRO at major authorized retailers.
Canon RF 100mm F2.8L Macro IS USM
OM System M.Zuiko Digital ED 90mm F3.5 Macro IS PRO
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.