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Canon

RF 24mm F1.8 Macro IS STM

Canon RF Mount

RF 24mm F1.8 Macro IS STM — 24mm f/1.8 for Canon RF, a popular choice in the canon lineup.

$499

Launch price

Released Sep 2020

vs
RF 50mm F1.2L USM

Canon

RF 50mm F1.2L USM

Canon RF Mount

Flagship RF 50mm f/1.2 L prime with Ring USM, 15-element design, and weather-sealed L-series build.

$2,299

Launch price

Released Dec 2018

RF 24mm F1.8 Macro IS STM is 1.8 years newer.

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Wins

5categories

RF 24mm F1.8 Macro IS STM

Sports & ActionMacro & Close-up

Wins

2categories

RF 50mm F1.2L USM

PortraitSports & Action

1 categories tied

Which would you choose?

TL;DR — Key differences

RF 24mm F1.8 Macro IS STM wins 4 categories·RF 50mm F1.2L USM wins 1 categories
  • ARF 24mm F1.8 Macro IS STM has lower Weight (270 g vs 950 g)
  • ARF 24mm F1.8 Macro IS STM has lower Min focus distance (14 cm vs 40 cm)
  • ARF 24mm F1.8 Macro IS STM has higher Max magnification (0.5 × vs 0.19 ×)
  • ARF 24mm F1.8 Macro IS STM has lower Length (63.1 mm vs 108 mm)
  • BRF 50mm F1.2L USM has lower Max aperture (Wide) (f/1.2 vs f/1.8)

Key specs at a glance

RF 24mm F1.8 Macro IS STMRF 50mm F1.2L USM
Focal Length24 mm50 mm
Max Aperturef/1.8f/1.2
MountCanon RFCanon RF
CoverageFull FrameFull Frame
StabilizationNoNo
Weight270 g950 g
Min Focus14 cm40 cm
Filter Size52 mm77 mm

Size and weight, to scale

RF 24mm F1.8 Macro IS STM

74 × 63 mm

270 g (0.60 lb / 9.52 oz)

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

for scale

RF 50mm F1.2L USM shown to scale

RF 50mm F1.2L USM

90 × 108 mm

950 g (2.09 lb / 33.51 oz)

RF 24mm F1.8 Macro IS STM is 45mm shorter and 15mm narrower than RF 50mm F1.2L USM.

RF 24mm F1.8 Macro IS STM is 680 g lighter than RF 50mm F1.2L USM.

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

Use caseRF 24mm F1.8 Macro IS STMRF 50mm F1.2L USM
Portrait
6.0Good
9.0Excellent
Sports & Action
6.5Good
6.5Good
Video & Hybrid
3.5Limited
4.5Fair
Landscape
5.0Fair
4.0Fair
Travel
5.0Fair
2.0Limited
Wildlife
0.0Limited
3.0Limited
Macro & Close-up
6.5Good
0.0Limited

Why pick one over the other

Reasons to choose the RF 24mm F1.8 Macro IS STM

  • Weight

    270 g vs 950 g — lower is better

  • Min focus distance

    14 cm vs 40 cm — lower is better

  • Length

    63.1 mm vs 108 mm — lower is better

  • Max magnification

    0.5 × vs 0.19 × — higher is better

  • Diameter

    74.4 mm vs 89.8 mm — lower is better

Reasons to choose the RF 50mm F1.2L USM

  • Weather sealing

    Only RF 50mm F1.2L USM supports it

  • Control ring

    Only RF 50mm F1.2L USM supports it

  • Max aperture (Wide)

    f/1.2 vs f/1.8 — lower is better

  • Max aperture (Tele)

    f/1.2 vs f/1.8 — lower is better

Shared specifications

Internal focus

Both support internal focus

Pros & cons at a glance

Editorially curated highlights and trade-offs.

RF 24mm F1.8 Macro IS STM

Pros

  • Lightweight design easy to carry all day
  • Solid optical performance for the price tier
  • Native Canon RF mount compatibility

Cons

  • Third-party or older alternatives may offer better value

RF 50mm F1.2L USM

Pros

  • Stunning sharpness even wide open at f/1.2
  • Beautiful, smooth bokeh with 10 rounded aperture blades
  • Fast and accurate Dual Pixel AF with Ring USM
  • Weather-sealed L-series construction

Cons

  • Heavy for a 50mm prime (950g)
  • Premium price for a single focal length
  • No optical image stabilization

Decided which one is right for you?

Compare live prices for the RF 24mm F1.8 Macro IS STM and RF 50mm F1.2L USM at major authorized retailers.

Canon RF 24mm F1.8 Macro IS STM

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Full specifications

= category winner

RF 24mm F1.8 Macro IS STM
RF 50mm F1.2L USM
Focal length (Min)
24 mm
50 mm
Focal length (Max)
24 mm
50 mm
Max aperture (Wide)
f/1.8
f/1.2+1.2 stops wider
Max aperture (Tele)
f/1.8
f/1.2+1.2 stops wider
Elements
11
15
Groups
9
9
Special elements
1 Aspherical, 1 UD
1 UD, 1 Aspherical
RF 24mm F1.8 Macro IS STM
RF 50mm F1.2L USM
Min focus distance
14 cm−26 cm less
40 cm
Max magnification
0.5 ×2.6× more
0.19 ×
Autofocus motor
STM
Ring USM
Internal focus
Yes
Yes
RF 24mm F1.8 Macro IS STM
RF 50mm F1.2L USM
Optical stabilization
No
No
OIS effectiveness
0 stops
0 stops
RF 24mm F1.8 Macro IS STM
RF 50mm F1.2L USM
Weight
270 g−680 g less
950 g
Length
63.1 mm−45 mm less
108 mm
Diameter
74.4 mm−15 mm less
89.8 mm
Filter thread size
52 mm
77 mm
Weather sealing
No
Yes
Diaphragm blades
9
10
RF 24mm F1.8 Macro IS STM
RF 50mm F1.2L USM
Lens mount
Canon RF
Canon RF
Format coverage
Full Frame
Full Frame

Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.