challenger A
Sony
α7 III
2018
VS
challenger B
Sony
α7 IV
2021
Sony α7 III vs Sony α7 IV — full comparison
Visual summary
— Reads in 5 seconds
7,6/ 10
PhotoTrès bon
5,0/ 10
VideoCorrect
Sony
α7 III
8,0/ 10
PhotoExcellent
6,4/ 10
VideoBon
Sony
α7 IV
Sony α7 IIISony α7 IV
Where to buy
— Live merchant price comparator
Sony α7 III
SONY a7 III Mirrorless Camera - Black, Body Only, Black
1 120 GBP · Back Market UK
Sony α7 IV
SONY a7 IV Mirrorless Camera - Black, Body Only, Black
1 799 GBP · Sony UK
You'll find the best prices on the market here, updated daily — and by going through these partner links, you support Camera Duel without paying a cent more.
Standout strengths
— Where each camera shines
Sony
α7 III
Top advantages
- 710 clichésBattery life (CIPA)+22 % vs Sony α7 IV
- 30 minRecording limitAbsent sur Sony α7 IV
- 650 gWeight+1 % vs Sony α7 IV
Sony
α7 IV
Top advantages
- 33 MPMegapixels+36 % vs Sony α7 III
- 828RAW buffer9,3× vs Sony α7 III
- 600 Mb/sMax bitrate6× vs Sony α7 III
- 60 fpsMax video fps2× vs Sony α7 III
Video reviews
— Long-form reviews
Sony α7 III
—
Sony α7 IV
Sony a7 IV First Impressions Review
DPReview TV · 20 min
Detailed spec-by-spec
— Round by round, the eight categories
Round 1
Sensor
SpecSony α7 IIISony α7 IV
Sensor format
Full Frame
Full Frame
Sensor type
BSI-CMOS
BSI-CMOS
Megapixels
24.2 MP
33 MP
Sensor size
35.8 × 23.8 mm
35.6 × 23.8 mm
Native ISO min
100
100
Native ISO max
51 200
51 200
Extended ISO max
204 800
204 800
Dynamic range (EV)
11.6 EV
11.7 EV
Round 2
Autofocus
SpecSony α7 IIISony α7 IV
AF points
693
759
AF coverage
93 %
94 %
Eye AF (human)
Oui
Oui
Eye AF (animal)
Oui
Oui
AF low light (EV)
-3 EV
-4 EV
Round 3
Speed & burst
SpecSony α7 IIISony α7 IV
Mechanical burst
10 fps
10 fps
Electronic burst
10 fps
10 fps
RAW buffer
89
828
Max shutter speed
1/8000
1/8000
Round 4
Video
SpecSony α7 IIISony α7 IV
Max video resolution
4K
4K
Max video fps
30 fps
60 fps
Max bitrate
100 Mb/s
600 Mb/s
Video codecs
XAVC S, AVCHD, H.264
XAVC HS, XAVC S, XAVC S-I, H.265, H.264
Recording modes
Long-GOP
Long-GOP
Chroma subsampling
4:2:0
4:2:0, 4:2:2
Bit depth
8-bit
10-bit
Log profile
Oui
Oui
Log profiles
S-Log3, S-Log2, HLG
S-Log3, S-Cinetone, HLG
Internal RAW
Non
Non
External RAW
—
—
4K crop
1×
1×
Oversampling
Oui
Oui
Open Gate
Non
Non
Anamorphic desqueeze
—
—
LUT support
—
user LUTs, in-camera LUT preview
Monitoring tools
zebras, histogram
waveform, histogram, zebras
Active cooling
Non
Non
Recording limit
30 min
Illimité
Unlimited recording
Non
Oui
Dual Native ISO
Non
Non
Proxy recording
Non
Non
XLR input
Non
Non
32-bit float audio
Non
Non
Genlock + Time Code
Non
Non
Round 5
Stabilisation
SpecSony α7 IIISony α7 IV
In-body stabilisation
Oui
Oui
IBIS rating
5 stops
5.5 stops
Round 6
Build
SpecSony α7 IIISony α7 IV
Weather sealing
Oui
Oui
Dual card slots
Oui
Oui
Card types
SD UHS-II, SD UHS-I
CFexpress Type A, SD UHS-II
Round 7
Ergonomics & screen
SpecSony α7 IIISony α7 IV
Weight
650 g
658 g
Dimensions
126.9 x 95.6 x 73.7
131.3 x 96.4 x 79.8
Viewfinder type
EVF
EVF
Viewfinder resolution
2.36 M dots
3.69 M dots
Viewfinder magnification
0.78×
0.78×
Screen size
3″
3″
Screen resolution
921 600
1.04 M dots
Screen articulation
tilt
vari-angle
Touchscreen
Oui
Oui
Round 8
Connectivity & battery
SpecSony α7 IIISony α7 IV
Battery life (CIPA)
710 clichés
580 clichés
USB type
USB-C 3.1 Gen1 + Micro USB
USB-C 3.2 Gen2 (10 Gbps)
HDMI type
Micro (Type D)
Full (Type A)
Wi-Fi
Oui
Oui
Bluetooth
Oui
Oui