Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
Sony
FX6
Full-frame cinema camcorder with dual base ISO and pro broadcast features.
$5,999
Released Nov 2020
Alpha 7 IV is 11 months newer.
Wins
Alpha 7 IV
Wins
FX6
5 categories tied
TL;DR — Key differences
- AAlpha 7 IV has higher Burst (mechanical) (10 fps vs 0 fps)
- AAlpha 7 IV has higher Burst (electronic) (10 fps vs 0 fps)
- AAlpha 7 IV has higher IBIS effectiveness (5.5 stops vs 0 stops)
- AAlpha 7 IV has lower ISO min (native) (100 vs 800)
- AAlpha 7 IV has higher ISO max (native) (51,200 vs 12,800)
Key specs at a glance
Size and weight, to scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
FX6
114 × 116 × 153 mm
890 g (1.96 lb / 31.39 oz)
Alpha 7 IV is 20mm shorter and 73mm thinner than FX6 but it is also 17mm wider.
Alpha 7 IV is 232 g lighter than FX6.
Depth (front-to-back): 80mm Alpha 7 IV · 153mm FX6
Sensor size, to scale
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
FX6
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
Alpha 7 IV
✓ more lensesSony E
350+
native lenses available
FX6
✓ 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
Alpha 7 IV
Burst (mechanical)
10 fps vs 0 fps — higher is better
Burst (electronic)
10 fps vs 0 fps — higher is better
IBIS effectiveness
5.5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
ISO min (native)
100 vs 800 — lower is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
ISO max (native)
51,200 vs 12,800 — higher is better
Resolution
33 MP vs 10.2 MP — higher is better
Reasons to choose
FX6
AF low-light limit
-6 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 114, 116, 153
Codecs
Adds XAVC-I, XAVC-L
4K max frame rate
120 fps vs 60 fps — higher is better
EVF resolution
5,760,000 vs 3,686,400 — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Max video bit rate — Both 600 Mbps
- ✓Weather sealing — Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
FX6
Pros
- ✓Dual base ISO
- ✓Pro cinema workflow
- ✓Internal XAVC
- ✓ND filters
Cons
- –Fixed lens mount needs adapters
- –Large for solo travel
- –Premium price
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Alpha 7 IV or FX6?
Alpha 7 IV scores 8.0/10 versus 3.0/10 for FX6 — Bird AF subject recognition.
What's the resolution difference between the Alpha 7 IV and FX6?
Alpha 7 IV is 33 MP and FX6 is 10.2 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the Alpha 7 IV and FX6 have in-body image stabilization?
Alpha 7 IV has 5.5-stop in-body image stabilization, while fX6 does not have IBIS.
What's the weight difference between the Alpha 7 IV and FX6?
Alpha 7 IV weighs 658 g and FX6 weighs 890 g, so the Alpha 7 IV is 232 g lighter.
Do the Alpha 7 IV and FX6 record 4K video?
Alpha 7 IV: 4K up to 60p. FX6: 4K up to 120p.
Are the Alpha 7 IV and FX6 weather sealed?
Alpha 7 IV: Yes. FX6: Yes.
Which has better battery life?
Rated battery life is 580 shots (CIPA) for the Alpha 7 IV and 520 shots for the FX6, giving the Alpha 7 IV the edge.
How much does each cost?
Alpha 7 IV launched at $2,499 and FX6 at $5,999. The Alpha 7 IV is $3,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Sony press materials.