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- Table of Contents
- Top
- Main Differences
- Design
- Photo General
- Photo Image Quality
- Pictures Sample Gallery
- Video General
- 4k Video
- Full HD Video
- Video Image Quality
- Storage And Connectivity
- Comments
Sony α7 IV vs Sony α7R IIIa
Side-by-Side Comparison
Products
Sony α7 IV
Sony α7R IIIa
Tested using Methodology v0.13
Updated Apr 03, 2025 02:47 PM
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Amazon.comTested using Methodology v0.13
Updated Feb 24, 2025 06:18 PM
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Body TypeSLR-Style
MirrorlessYes
Sensor SizeFull Frame
Body TypeSLR-Style
MirrorlessYes
Sensor SizeFull Frame
Variants
- α7 IV (Black (Body Only))
- α7 IV (Black W/ 24-105mm lens)
- α7R IIIa (Black (Body Only))
- α7R IIIa (Black W/ 24-70mm lens)
Our Verdict
Sony α7 IV
Sony α7R IIIa
The Sony α7 IV and the Sony α7R IIIa are both excellent full-frame cameras, but the α7 IV is a bit better overall. It's of a newer generation of Alpha cameras and has a better processor and a much more reliable autofocus system. It's also a significantly better video option, with better internal and external recording capabilities and more frame rate options. That said, if you're primarily interested in photography, the α7R IIIa still holds its own, with a higher-resolution sensor and higher-resolution screen, as well as a longer battery life.
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Black (Body Only)
α7 IV
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α7R IIIa
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α7 IV
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α7R IIIa
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Finding storeMain Differences forTravel Photography
Travel Photography
Threshold
Travel Photography
7.7
7.3
Photo AF-C Center Point
9.7
6.6
Photo AF-C Tracking
8.7
3.5
Full Comparison
Design
Portability
3.9
4.2
Portability Picture
Height
3.8" (9.6 cm)
3.8" (9.6 cm)
Width
5.6" (14.3 cm)
5.4" (13.8 cm)
Depth
3.2" (8.1 cm)
3.0" (7.5 cm)
Volume
67.9 in³ (1,112.0 cm³)
60.5 in³ (991.4 cm³)
Weight
1.47 lbs (0.67 kg)
1.46 lbs (0.66 kg)
Build Quality
9.0
8.0
Build Quality Picture
Body
Body Picture
Body Type
SLR-Style
SLR-Style
Water Resistance
Weather-Sealed
Weather-Sealed
Mirrorless
Yes
Yes
Rugged
No
No
Hot Shoe
Yes
Yes
Customizable Button
Yes
Yes
Command Dial
4
3
Tripod Mount
Yes
Yes
Lens Mount
E-Mount
E-Mount
Built-In Flash
No
No
Fastest Shutter Speed
1/8,000 s
1/8,000 s
In The Box
In The Box Picture
Ergonomics & Comfort
8.5
8.5
Hand Grip Picture
Hand Grip: Small Hand
Yes
Yes
Hand Grip: Medium Hand
Yes
Yes
Hand Grip: Large Hand
Yes
Yes
Hand Grip: Extra-Large Hand
Yes
No
Viewfinder
EVF Menu Picture
Viewfinder Type
Electronic
Electronic
Advertised Coverage
100%
100%
Advertised Resolution
3.69 million dots
3.69 million dots
Advertised Magnification
0.78
0.78
Screen
9.2
7.4
Screen Picture
Screen Articulation Type
Fully-Articulated
Tilting
Screen Max Brightness
800 cd/m²
929 cd/m²
Advertised Resolution
1.04 million dots
2.35 million dots
Size
3.0" (7.5 cm)
3.0" (7.5 cm)
Touchscreen
Yes
Limited
Menu System
9.0
6.5
Screen Menu Picture
Guide Mode
Yes
Yes
App Name
Creators' App
Imaging Edge Mobile
Built-In Lens
0.0
0.0
Aperture Vs Focal Length
Maximum Aperture
No built-in lens
No built-in lens
Max Aperture (Full-Frame Equivalent)
N/A
N/A
Minimum Focal Length
N/A
N/A
Maximum Focal Length
N/A
N/A
Max Focal Length (Full-Frame Equivalent)
N/A
N/A
Optical Image Stabilization
No
No
Light Falloff Picture
Luminance
N/A
N/A
Light Falloff
N/A
N/A
Sensor
Sensor Type
BSI CMOS
BSI CMOS
Advertised Effective Pixels
33 MP
42.4 MP
Processor
BIONZ XR
BIONZ X
Sensor Size
Full Frame
Full Frame
Extended ISO Minimum
50
50
Native ISO Minimum (Base ISO)
100
100
Native ISO Maximum
51,200
32,000
Tested Firmware
Version 1.10
Ver. 1.00
Battery
8.6
9.7
Battery Type
Sony NP-FZ100
Sony NP-FZ100
USB Charging
Yes
Yes
Power Delivery While Recording
Yes
Yes
Advertised Battery Life In Photo
580 photos
640 photos
Tested Battery Life In Video
105 min
147 min
Photo General
Photo Shooting Speed
7.9
7.1
Low Speed Continuous
4 fps
5 fps
High Speed Continuous
10 fps
10 fps
Silent Shooting Continuous
10 fps
10 fps
Raw Buffer Size
10,000 Photos
32 Photos
JPEG Buffer Size
10,000 Photos
86 Photos
Buffer Empty Time
0 s
15 s
Photo AF-C Tracking
8.7
3.5
Autofocus Tracking Shots
Run 01
AF-C Tracking 01
Run 01
AF-C Tracking 01
Perfect Focus Hit Rate
77%
24%
Usable Focus Hit Rate
94%
38%
Photo AF-C Center Point
9.7
6.6
Autofocus Center Point Shots
Run 01
AF-C Center Point 01
Run 01
AF-C Center Point 01
Perfect Focus Hit Rate
96%
66%
Usable Focus Hit Rate
99%
83%
Photo Image Stabilization
6.6
7.0
Stabilization Slideshow
Minimum Shutter Speed Achieved
1/30 s
1/25 s
In-Body Image Stabilization
Yes
Yes
Photo Image Quality
Photo RAW Dynamic Range
8.7
8.9
Dynamic Range Scene
Dynamic Range At Base ISO
11.0 f-stops
11.2 f-stops
Dynamic Range At 1/500s Exposure Time
9.6 f-stops
9.6 f-stops
Dynamic Range At 1/2000s Exposure Time
7.5 f-stops
7.5 f-stops
Dynamic Range At 1/4000s Exposure Time
6.9 f-stops
6.9 f-stops
Photo RAW Sharpness
9.0
8.9
Sharpness Scene Crop
Vertical Edge MTF50 At Base ISO
2,116 LW/PH
2,199 LW/PH
Horizontal Edge MTF50 At Base ISO
2,630 LW/PH
2,324 LW/PH
Photo RAW Noise
7.7
7.2
Noise Scene Crop
Noise Vs Exposure Time
SNR 18% At 1/8 Exposure Time (125 ms)
34.5 dB
33.5 dB
SNR 18% At 1/30 Exposure Time (33 ms)
32.2 dB
30.9 dB
SNR 18% At 1/125 Exposure Time (8 ms)
27.7 dB
26.3 dB
SNR 18% At 1/500 Exposure Time (2 ms)
22.3 dB
20.9 dB
Pictures Sample Gallery
Video General
Video Features
Full HD Video
Yes
Yes
4k Video
Yes
Yes
6k Video
No
No
Clean HDMI Output
Yes
Yes
Advertised Max Chroma Sampling Over HDMI
4:2:2
4:2:2
Advertised Max Bit Depth Over HDMI
10 bits
8 bits
Log Picture Profile
Yes
Yes
Recording Light
No
No
Audio
Audio Test Sample
Audio Recording
Stereo
Stereo
Microphone Level Display
Yes
Yes
Video File Format And Compression
MP4 H.264 / MPEG-4 AVC
Yes
No
MP4 H.265 / HEVC
Yes
No
MOV H.264 / MPEG-4 AVC
No
No
MOV H.265 / HEVC
No
No
AVCHD H.264 / MPEG-4 AVC
Yes
Yes
All-I Compression
Yes
Yes
4k Video
4k Video Frame Rate
9.0
8.5
240 fps In 4k
No
No
120 fps In 4k
No
No
60 fps In 4k
Yes, with a Crop
No
30 fps In 4k
Yes
Yes
24 fps In 4k
Yes
Yes
4k Crop At Max Available fps
1.5 x
1 x
4k Video Internal Recording
10
7.1
Bitrate Maximum In 4k
567 Mbps
95 Mbps
Bitrate Minimum In 4k
60 Mbps
53 Mbps
Chroma Sampling In 4k
4:2:2
4:2:0
Bit Depth In 4k
10 Bit
8 Bit
Record Time Limit In 4k
N/A
30 min
Overheat Recording Interruptions in 4k
0
1
4k Video Autofocus Performance
9.7
8.1
4k Object Tracking Video
Object Tracking In 4k
9.7
7.5
4k Face Tracking Video
Face Tracking In 4k
9.5
8.0
Face Detection In 4k
Yes
Yes
Eye Detection In 4k
Yes
Yes
4k Video Quality
8.8
8.5
4k Sample Low Light Video
Low Light Capability In 4k
8.5
7.5
4k Test Scene Extract
Test Scene Extract In 4k
9.0
9.5
4k Video Rolling Shutter Effect
5.5
5.7
Rolling Shutter Video in 4k
4k Rolling Shutter
7.3°
7.0°
Full HD Video
FHD Video Frame Rate
9.5
9.5
240 fps In FHD
No
No
120 fps In FHD
Yes
Yes
60 fps In FHD
Yes
Yes
30 fps In FHD
Yes
Yes
24 fps In FHD
Yes
Yes
FHD Crop At Max Available fps
1 x
1 x
FHD Video Internal Recording
10
7.7
Bitrate Maximum In FHD
207 Mbps
92 Mbps
Bitrate Minimum In FHD
14 Mbps
12 Mbps
Chroma Sampling In FHD
4:2:2
4:2:0
Bit Depth In FHD
10 Bit
8 Bit
Record Time Limit in FHD
N/A
30 min
FHD Video Autofocus Performance
9.5
8.3
Object Tracking Video
Object Tracking In FHD
9.0
7.5
FHD Face Tracking Video
Face Tracking In FHD
9.8
8.5
Face Detection In FHD
Yes
Yes
Eye Detection In FHD
Yes
Yes
FHD Video Quality
8.5
8.3
FHD Sample Low Light Video
Low Light Capability In FHD
8.5
7.5
FHD Test Scene Extract In FHD
Test Scene Extract In FHD
8.5
9.0
FHD Video Rolling Shutter Effect
8.2
7.5
Rolling Shutter Video in FHD
FHD Rolling Shutter
2.0°
3.0°
Video Image Quality
Video Dynamic Range
8.9
8.3
Video Dynamic Range Waveform
Video Dynamic Range Slideshow
Strict SNR Max Dynamic Range
10.50 stops
7.04 stops
Lenient SNR Max Dynamic Range
11.51 stops
10.50 stops
Background Floor Max Dynamic Range
13.92 stops
13.92 stops
Luminosity Patch Detection
8.3
8.3
Luminosity Patch Detection Chart
Above Middle Gray
5.17 stops
5.17 stops
Below Middle Gray
9.98 stops
9.98 stops
Storage And Connectivity
Storage
Card Slot Picture
Card 1 Slot
CFexpress Type A and UHS-II
SD Card UHS-II
Card 2 Slot
SD Card UHS-II
SD Card UHS-I
Inputs / Outputs
10
9.5
Input Picture
USB
USB-C
USB-C & Micro USB
HDMI
Full Size (Type A)
Micro (Type D)
Headphones
Yes
Yes
Microphone
Stereo
Stereo
Wi-Fi
Yes
Yes
Bluetooth
Yes
Yes
Check Price
Black (Body Only)
α7 IV
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α7R IIIa
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α7 IV
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Finding storeBlack W/ 24-70mm lens
α7R IIIa
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Sony α7 IV
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Sony α7 IV vs Sony α7R IIIa: Main Discussion
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