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Canon - RF 24-70mm f/2.8L IS USM vs Sony - FE 135mm f/1.8 GM

Last updated · How Mars Score works
RF 24-70mm f/2.8L IS USMCANONRENDER
Probe A
Canon
RF 24-70mm f/2.8L IS USM
55.3/ 100D
Optics55· 55%
Build—· 35%
Mount—· 10%
FE 135mm f/1.8 GMSONYRENDER
Probe B
Sony
FE 135mm f/1.8 GM
72.4/ 100B
Optics72· 55%
Build—· 35%
Mount—· 10%
Quick verdict

Between the RF 24-70mm f/2.8L IS USM and FE 135mm f/1.8 GM, the RF 24-70mm f/2.8L IS USM comes out ahead in weight / optical stabilization, while the FE 135mm f/1.8 GM wins on min focal / max focal. Overall, the RF 24-70mm f/2.8L IS USM scores 55.3 and the FE 135mm f/1.8 GM scores 72.4 on our Mars Score.

Buying advice

Which should you buy?

The FE 135mm f/1.8 GM is the clear pick on raw spec strength, leading by 17.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the RF 24-70mm f/2.8L IS USM if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, optical stabilization.

Pick the FE 135mm f/1.8 GM if you care most about min focal / max focal. Its strongest claims are min focal, max focal.

Both ship with comparable weather sealed, so those specs do not separate the two — focus on the differences below.

Bottom line: the FE 135mm f/1.8 GM is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Canon - RF 24-70mm f/2.8L IS USM wins

  • ▲Weight — 50.00 g less. 900 vs 950.
  • ▲Has Optical stabilization.

Why Sony - FE 135mm f/1.8 GM wins

  • ▲Min focal: 135 (vs 24).
  • ▲Max focal: 135 (vs 70).
Full readout

Spec comparison

Optics

SpecCanon - RF 24-70mm f/2.8L IS USMSony - FE 135mm f/1.8 GM
Min focal24 mm135 mmlead
Max focal70 mm135 mmlead
Max aperturef/2.8f/1.8
Min aperturef/22f/22

Build

SpecCanon - RF 24-70mm f/2.8L IS USMSony - FE 135mm f/1.8 GM
Weight900 glead950 g
Weather sealedⓘtruetrue
Optical stabilizationⓘtrueleadfalse

Mount

SpecCanon - RF 24-70mm f/2.8L IS USMSony - FE 135mm f/1.8 GM
Lens mountCanon RFleadSony E
Drill down

Spec-level deep dives

Min focal→Max focal→Max aperture→Min aperture→Weight→Weather sealed→Optical stabilization→Lens mount→
By manufacturer

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