Canon
RF-S 10-18mm F4.5-6.3 IS STM
Canon RF Mount
RF-S 10-18mm F4.5-6.3 IS STM — 10–18mm f/4.5-6.3 for Canon RF, a popular choice in the canon lineup.
$329
Launch priceReleased Apr 2024
Sony
FE 70-200mm F2.8 GM OSS II
Sony E Mount
The standard telephoto zoom, completely redesigned to be 29% lighter and significantly sharper.
$2,799
Launch priceReleased Oct 2021
RF-S 10-18mm F4.5-6.3 IS STM is 2.5 years newer.
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Wins
RF-S 10-18mm F4.5-6.3 IS STM
Wins
FE 70-200mm F2.8 GM OSS II
TL;DR — Key differences
- ARF-S 10-18mm F4.5-6.3 IS STM has lower Weight (165 g vs 1045 g)
- ARF-S 10-18mm F4.5-6.3 IS STM has lower Length (44.6 mm vs 200 mm)
- ARF-S 10-18mm F4.5-6.3 IS STM has lower Min focus distance (15 cm vs 40 cm)
- BFE 70-200mm F2.8 GM OSS II has lower Max aperture (Tele) (f/2.8 vs f/6.3)
- BFE 70-200mm F2.8 GM OSS II has higher Max magnification (0.3 × vs 0.17 ×)
Key specs at a glance
Size and weight, to scale
RF-S 10-18mm F4.5-6.3 IS STM
⌀69 × 45 mm
165 g (0.36 lb / 5.82 oz)
Credit card
85.6 × 54 mm
for scale
FE 70-200mm F2.8 GM OSS II
⌀88 × 200 mm
1045 g (2.30 lb / 36.86 oz)
RF-S 10-18mm F4.5-6.3 IS STM is 155mm shorter and 19mm narrower than FE 70-200mm F2.8 GM OSS II.
RF-S 10-18mm F4.5-6.3 IS STM is 880 g lighter than FE 70-200mm F2.8 GM OSS II.
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-S 10-18mm F4.5-6.3 IS STM
- ✓
Weight
165 g vs 1045 g — lower is better
- ✓
Length
44.6 mm vs 200 mm — lower is better
- ✓
Min focus distance
15 cm vs 40 cm — lower is better
- ✓
Special elements
Adds 1 UD
- ✓
Diameter
69.2 mm vs 88 mm — lower is better
Reasons to choose the FE 70-200mm F2.8 GM OSS II
- ✓
Special elements
Adds 1 XA, 1 Super ED, 2 ED
- ✓
Max aperture (Tele)
f/2.8 vs f/6.3 — lower is better
- ✓
Weather sealing
Only FE 70-200mm F2.8 GM OSS II supports it
- ✓
Custom function button
Only FE 70-200mm F2.8 GM OSS II supports it
- ✓
Max aperture (Wide)
f/2.8 vs f/4.5 — lower is better
- ✓
Max magnification
0.3 × vs 0.17 × — higher is better
- ✓
OIS effectiveness
4.5 stops vs 4 stops — higher is better
Shared specifications
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF-S 10-18mm F4.5-6.3 IS STM
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Built-in optical image stabilization
- ✓Lightweight design easy to carry all day
Cons
- –Slower maximum aperture limits low-light performance
- –Third-party or older alternatives may offer better value
FE 70-200mm F2.8 GM OSS II
Pros
- ✓Extremely lightweight for an f/2.8 telephoto zoom (only 1045g)
- ✓Virtually instantaneous and silent autofocus with 4 XD Linear motors
- ✓Stunning optical performance and contrast across entire range
- ✓Outstanding built-in Optical SteadyShot stabilization
- ✓Dedicated physical aperture ring with click and lock switches
Cons
- –Very high price tag
- –Lens hood is bulky and can block storage space easily
Decided which one is right for you?
Compare live prices for the RF-S 10-18mm F4.5-6.3 IS STM and FE 70-200mm F2.8 GM OSS II at major authorized retailers.
Canon RF-S 10-18mm F4.5-6.3 IS STM
Sony FE 70-200mm F2.8 GM OSS II
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.