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Canon

EOS C400

RF-mount Super 35 cinema camera with 6K 60p, Cinema RAW Light, and built-in 9-stop ND.

$7,999

Launch price

Released Sep 2024

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vs

Xtra

Atto

Ultra-compact 54g wearable action camera with 1/1.3-inch sensor, 4K/60fps, 143° FOV, 128GB internal storage, and 220-min battery with Vision Dock.

$299

Launch price

Released Jan 2026

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Atto is 1.4 years newer.

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Wins

5categories

EOS C400

★ Sports & Action★ Video & Hybrid

Wins

1categories

Atto

★ Travel

2 categories tied

Which would you choose?

TL;DR — Key differences

EOS C400 wins 4 categories·Atto wins 1 categories
  • AEOS C400 has higher AF points / zones (1053 vs 0)
  • AEOS C400 has higher Card slots (2 vs 0)
  • BAtto has lower Weight (54 g vs 1450 g)
  • AEOS C400 has higher ISO max (native) (25,600 vs 6,400)
  • AEOS C400 has higher 4K max frame rate (120 fps vs 60 fps)

Key specs at a glance

EOS C400Atto
Resolution6.2 MP—
Sensor26.1 × 13.8 mm9.6 × 7.2 mm
ISO max25,6006,400
Burst20 fps—
4K120 fps60 fps
IBIS7-stopNo
Weight1450 g54 g
Battery640 shots640 shots

Size and weight, to scale

EOS C400

162 × 138 × 130 mm

1450 g (3.20 lb / 51.15 oz)

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

Credit card

85.6 × 54 mm

for scale

EOS C400 is 1396 g heavier than Atto.

Depth (front-to-back): 130mm EOS C400

Sensor size, to scale

EOS C400

26.1 × 13.8 mm · APS-C

360 mm² area

Atto

9.6 × 7.2 mm · Compact

69 mm² area

5.2× larger sensor area = shallower depth of field and better low-light performance.

Lens ecosystem

Native lens selection

EOS C400

✓ more lenses

Canon RF

105+

native lenses available

45 first-party60 third-party

Atto: mount data unavailable

Counts include current first-party and major third-party native autofocus lenses.

Use-case scoring

Which one for what?

Algorithmic scores from verified specs · 10 = best in class

Use caseEOS C400Atto
Portrait
4.0Fair✓ wins
1.0Limited
Sports & Action
9.5Excellent✓ wins
5.0Fair
Video & Hybrid
9.0Excellent✓ wins
4.0Fair
Landscape
3.5Limited✓ wins
1.5Limited
Travel
5.5Fair
8.0Excellent✓ wins
Wildlife
9.0Excellent✓ wins
3.0Limited
Vlogging
5.5Fair✓ wins
4.0Fair

Why pick one over the other

Reasons to choose

EOS C400

  • AF points / zones

    1053 vs 0 — higher is better

  • Subject recognition

    Adds Human, Animal, Bird…

  • Codecs

    Adds Cinema RAW Light, XF-AVC, Apple ProRes

  • Dimensions (W×H×D mm)

    Adds 162, 138, 130

  • Card slots

    2 vs 0 — higher is better

  • Card types

    Adds SD UHS-II

  • ISO max (native)

    25,600 vs 6,400 — higher is better

  • Eye AF

    Only EOS C400 supports it

Reasons to choose

Atto

  • Codecs

    Adds H.264, H.265

  • Stabilization modes

    Adds MotionMaster, TiltGuard

  • Card types

    Adds microSD (via Vision Dock)

  • Weight

    54 g vs 1450 g — lower is better

Both cameras share

  • ✓ISO min (native) — Both 100
  • ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
  • ✓Weather sealing — Both support weather sealing
  • ✓Battery life (CIPA) — Both 640 shots
  • ✓Wi-Fi — Both support wi-fi
  • ✓Bluetooth — Both support bluetooth

Pros & cons at a glance

Editorially curated highlights and trade-offs.

EOS C400

Pros

  • ✓6K 60p internal
  • ✓Built-in 9-stop ND
  • ✓Dual gain sensor
  • ✓RF mount

Cons

  • –Super 35 only
  • –Premium price
  • –Large media needs

Atto

Pros

  • ✓54g lightest in class
  • ✓220 min with Vision Dock
  • ✓128GB built-in + 600MB/s transfer
  • ✓5-min pre-recording

Cons

  • –No built-in screen
  • –4K/60fps 16:9 only
  • –10m waterproof (no case)

Decided which one is right for you?

Compare live prices for the EOS C400 and Atto at major authorized retailers.

Canon EOS C400

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Xtra Atto

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Full specifications

✓ = category winner

EOS C400
Atto
Resolution
6.2 MP
—
Sensor type
Super 35 Dual Gain CMOS
1/1.3" CMOS
Sensor size
26.1 × 13.8 mm
9.6 × 7.2 mm
AA filter
No
—
EOS C400
Atto
Field of view
—
143 °
EOS C400
Atto
Processor
DIGIC X
Xtra AI processor
EOS C400
Atto
ISO min (native)
100
100
ISO max (native)
25,600✓+2 stops
6,400
ISO max (expanded)
102,400
6,400
EOS C400
Atto
Shutter type
Mechanical + Electronic
Electronic shutter
Max mechanical speed
1/8000 sec
1/8000 sec
Max electronic speed
1/16000 sec
1/8000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for wildlife, EOS C400 or Atto?

EOS C400 scores 9.0/10 versus 3.0/10 for Atto — 20fps burst captures fleeting moments.

Do the EOS C400 and Atto have in-body image stabilization?

EOS C400 has 7-stop in-body image stabilization, while Atto uses Electronic stabilization (MotionMaster + TiltGuard) (electronic).

What's the weight difference between the EOS C400 and Atto?

EOS C400 weighs 1450 g and Atto weighs 54 g, so the Atto is 1396 g lighter.

Do the EOS C400 and Atto record 4K video?

EOS C400: 6K 60p (max), 4K up to 120p. Atto: 4K up to 60p.

Are the EOS C400 and Atto weather sealed?

EOS C400: Yes. Atto: Yes.

Which has better battery life?

Rated battery life is 640 shots (CIPA) for the EOS C400 and 640 shots for the Atto, giving the Atto the edge.

How much does each cost?

EOS C400 launched at $7,999 and Atto at $299. The Atto is $7,700 less.

Can't decide between two? Compare a third camera.

Add any camera to get a three-way EOS C400 vs Atto vs X comparison.

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