Camera faceoff

EOS C400 vs EOS C300 Mark III

Canon

Specs at a glance

Spec

Summary

For filmmakers embracing modern full-frame aesthetics and the RF lens ecosystem, the new EOS C400 is the clear choice, offering 6K resolution and advanced Dual Pixel CMOS AF II at a significantly more accessible price point. However, productions heavily invested in Canon's vast EF lens library will find the C300 Mark III a familiar and capable Super35 option, albeit with a lower maximum resolution and older AF system.

Which would you pick?

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Highlights

EOS C400

Sensor & Image Science: Full-Frame BSI Stacked CMOS sensor delivers superior low-light performance and a shallower depth of field.
Resolution & Codec: Internal 6K (6000x3164) recording with Cinema RAW Light and H.265 for high-quality, flexible post-production.
Autofocus: Next-generation Dual Pixel CMOS AF II provides faster, more accurate subject tracking and detection.
Lens Mount: Native Canon RF mount opens up access to cutting-edge RF lenses and adapters for EF/PL.
Form Factor: Lighter (1500g) and more compact design, ideal for gimbal work and smaller crews.

EOS C300 Mark III

Sensor & Image Science: Super35 DGO (Dual Gain Output) sensor excels in dynamic range, capturing 16 stops with exceptional detail in highlights and shadows.
Lens Mount: Canon EF mount offers compatibility with an enormous existing library of professional cinema and stills lenses.
Codec Versatility: Robust internal Cinema RAW Light and XF-AVC recording options provide excellent flexibility for various workflows.
Established Ecosystem: A proven and widely adopted camera in the industry, with extensive accessory support and rental availability.

The trade-off

Choosing the EOS C400 means giving up native EF lens compatibility and the established Super35 DGO sensor. Choosing the EOS C300 Mark III means giving up full-frame sensor benefits, 6K resolution, and the advanced Dual Pixel CMOS AF II.

Best for…

Future-Proofing & Modern Lenses

EOS C400

native RF mount and full-frame sensor for cutting-edge optics.

Existing EF Lens Owners

EOS C300 Mark III

seamless integration with a vast, established EF lens collection.

High-Resolution Deliverables

EOS C400

internal 6K recording provides more flexibility for reframing and VFX.

Run-and-Gun / Documentary

EOS C400

lighter body and superior Dual Pixel CMOS AF II for fast-paced shoots.

Value & Performance

EOS C400

delivers full-frame 6K at a lower MSRP than the C300 Mark III.

What to pair it with

EOS C400

Canon RF 24-70mm f/2.8L IS USM (Canon) — versatile zoom for full-frame coverage and excellent image quality.
SmallRig V-Mount Battery Plate (SmallRig) — powers camera and accessories for extended shooting times.
Atomos Ninja V+ (Atomos) — external monitor/recorder for ProRes RAW monitoring and backup.
Tilta Full Camera Cage (Tilta) — adds mounting points and protection for a robust rig setup.