Canon
EOS C400
RF-mount Super 35 cinema camera with 6K 60p, Cinema RAW Light, and built-in 9-stop ND.
$7,999
Launch priceReleased Sep 2024
Sony
FX3
Compact full-frame cinema line camera with S-Cinetone and pro video ergonomics.
$3,899
Launch priceReleased Feb 2021
EOS C400 is 3.5 years newer.
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Wins
EOS C400
Wins
FX3
3 categories tied
Which would you choose?
TL;DR — Key differences
- BFX3 has higher ISO max (native) (102,400 vs 25,600)
- BFX3 has higher Max video bit rate (600 Mbps vs 200 Mbps)
- BFX3 has lower Weight (715 g vs 1450 g)
- AEOS C400 has higher Burst (electronic) (20 fps vs 10 fps)
- BFX3 has higher Resolution (12.1 MP vs 6.2 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS C400
162 × 138 × 130 mm
1450 g (3.20 lb / 51.15 oz)
Credit card
85.6 × 54 mm
for scale
FX3
130 × 78 × 85 mm
715 g (1.58 lb / 25.22 oz)
EOS C400 is 32mm wider, 60mm taller, and 46mm thicker than FX3.
EOS C400 is 735 g heavier than FX3.
Depth (front-to-back): 130mm EOS C400 · 85mm FX3
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS C400
162 × 138 mm
Credit card
85.6 × 54 mm
FX3
130 × 78 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS C400
162 × 130 mm
Credit card
85.6 × 54 mm
FX3
130 × 85 mm
Sensor size, to scale
EOS C400
26.1 × 13.8 mm · APS-C
360 mm² area
FX3
35.6 × 23.8 mm · Full Frame
847 mm² area
2.4× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS C400
Canon RF
105+
native lenses available
FX3
✓ more lensesSony E
350+
native lenses available
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
Why pick one over the other
Reasons to choose
EOS C400
Codecs
Adds Cinema RAW Light, XF-AVC, Apple ProRes
Dimensions (W×H×D mm)
Adds 162, 138, 130
AF low-light limit
-6.5 EV vs -6 EV — lower is better
Subject recognition
Adds Bird, Vehicle
Burst (electronic)
20 fps vs 10 fps — higher is better
Pre-Capture / Pre-Release
Only EOS C400 supports it
AF points / zones
1053 vs 627 — higher is better
IBIS effectiveness
7 stops vs 5.5 stops — higher is better
Reasons to choose
FX3
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 129.7, 77.8, 84.5
ISO max (native)
102,400 vs 25,600 — higher is better
Max video bit rate
600 Mbps vs 200 Mbps — higher is better
Weight
715 g vs 1450 g — lower is better
AA filter
Only FX3 supports it
Card types
Adds CFexpress Type A
Resolution
12.1 MP vs 6.2 MP — higher is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓RAW buffer depth — Both 120 frames
- ✓4K max frame rate — Both 120 fps
- ✓Internal RAW video — Both support internal raw video
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
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
FX3
Pros
- ✓Cinema form factor
- ✓S-Log3 / S-Cinetone
- ✓Compact for gimbals
- ✓Full-frame sensor
Cons
- –No EVF
- –Still photo ergonomics limited
- –Single card slot
Decided which one is right for you?
Compare live prices for the EOS C400 and FX3 at major authorized retailers.
Canon EOS C400
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS C400 or FX3?
EOS C400 scores 9.5/10 versus 5.5/10 for FX3 — 20fps burst — fast action ready.
What's the resolution difference between the EOS C400 and FX3?
EOS C400 is 6.2 MP and FX3 is 12.1 MP, so the FX3 captures more detail for cropping and large prints.
Do the EOS C400 and FX3 have in-body image stabilization?
EOS C400 has 7-stop in-body image stabilization, while FX3 has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS C400 or the FX3?
EOS C400 reaches 20 fps electronic. FX3 reaches 10 fps electronic.
What's the weight difference between the EOS C400 and FX3?
EOS C400 weighs 1450 g and FX3 weighs 715 g, so the FX3 is 735 g lighter.
Do the EOS C400 and FX3 record 4K video?
EOS C400: 6K 60p (max), 4K up to 120p. FX3: 4K up to 120p.
Are the EOS C400 and FX3 weather sealed?
EOS C400: Yes. FX3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS C400 and 580 shots for the FX3, giving the EOS C400 the edge.
How much does each cost?
EOS C400 launched at $7,999 and FX3 at $3,899. The FX3 is $4,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS C400 vs FX3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Canon and Sony press materials.