Canon
EOS C70
Super 35 cinema box with RF mount, 4K 120p, Canon Log 2/3, and built-in ND for documentary crews.
$5,499
Released Sep 2020
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
Alpha 7 IV is 1.1 years newer.
Wins
EOS C70
Wins
Alpha 7 IV
5 categories tied
TL;DR — Key differences
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 120 frames)
- BAlpha 7 IV has higher Resolution (33 MP vs 8.85 MP)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 200 Mbps)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 25,600)
- AEOS C70 has higher Burst (electronic) (20 fps vs 10 fps)
Key specs at a glance
Size and weight, to scale
EOS C70
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
EOS C70 is 7mm wider, 2mm taller, and 8mm thicker than Alpha 7 IV.
EOS C70 is 62 g heavier than Alpha 7 IV.
Depth (front-to-back): 88mm EOS C70 · 80mm Alpha 7 IV
Sensor size, to scale
EOS C70
36 × 24 mm · Full Frame
864 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
EOS C70
Canon RF
105+
native lenses available
Alpha 7 IV
✓ 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 C70
AF low-light limit
-6.5 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 138, 98, 88
Burst (electronic)
20 fps vs 10 fps — higher is better
Pre-Capture / Pre-Release
Only EOS C70 supports it
Codecs
Adds ProRes
AF points / zones
1053 vs 759 — higher is better
Subject recognition
Adds Vehicle
IBIS effectiveness
7 stops vs 5.5 stops — higher is better
Reasons to choose
Alpha 7 IV
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 120 frames — higher is better
Resolution
33 MP vs 8.85 MP — higher is better
Max video bit rate
600 Mbps vs 200 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
ISO max (native)
51,200 vs 25,600 — higher is better
Subject recognition
Adds Insect, Car/Train, Airplane
Card types
Adds CFexpress Type A
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 60 fps
- ✓Internal RAW video — Both support internal raw video
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS C70
Pros
- ✓4K 120p internal
- ✓Built-in ND filters
- ✓Dual pixel AF in cinema form
- ✓RF mount flexibility
Cons
- –Super 35 not full-frame
- –No stills-first ergonomics
- –Large for gimbal work
Alpha 7 IV
Pros
- ✓33MP — more detail for cropping and print
- ✓10-bit 4K 60p (Super35 crop) / 4K 30p full-frame
- ✓Full-size HDMI port
- ✓759 phase-detect AF points
Cons
- –4K 60p requires Super35 crop
- –10fps burst lags behind R6 II at 40fps
- –Complex menu system
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, EOS C70 or Alpha 7 IV?
Alpha 7 IV scores 9.0/10 versus 6.5/10 for EOS C70 — 33MP — ample resolution for portraits.
What's the resolution difference between the EOS C70 and Alpha 7 IV?
EOS C70 is 8.85 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the EOS C70 and Alpha 7 IV have in-body image stabilization?
EOS C70 has 7-stop in-body image stabilization, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS C70 or the Alpha 7 IV?
EOS C70 reaches 20 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the EOS C70 and Alpha 7 IV?
EOS C70 weighs 720 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 62 g lighter.
Do the EOS C70 and Alpha 7 IV record 4K video?
EOS C70: 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the EOS C70 and Alpha 7 IV weather sealed?
EOS C70: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS C70 and 580 shots for the Alpha 7 IV, giving the EOS C70 the edge.
How much does each cost?
EOS C70 launched at $5,499 and Alpha 7 IV at $2,499. The Alpha 7 IV is $3,000 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.