Comparison of the Sony Alpha 7R IIIA and the Sony Alpha 9 III
Sony Alpha 7R IIIA
94 points
Sony Alpha 9 III
88 points
Sony Alpha 7R IIIA
96 mm
127 mm
BODY
Sony Alpha 9 III
97 mm
136 mm
2021
YEARYear of announcement
2023
Magnesium alloy
BODY MATERIAL
Magnesium alloy
Weather
sealed
sealed
WEATHER SEALING
Weather
sealed
sealed
Sony E
LENS MOUNT
Sony E
500 000 cycles
SHUTTER LIFEThe shutter durability as rated by the manufacturer.
n/a
657 g
1.45 lb
1.45 lb
127 x 96 x 74 mm
5 x 3.8 x 2.9 in.
5 x 3.8 x 2.9 in.
DIMENSIONS
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
DIMENS.
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
136 x 97 x 83 mm
5.4 x 3.8 x 3.3 in.
5.4 x 3.8 x 3.3 in.
702 g
1.55 lb
1.55 lb
Sony Alpha 7R IIIA
Sony Alpha 9 III
42.4 MP
Sony IMX251 Exmor R CMOS Full Frame Sensor
SENSOR The number of effective megapixels (MP). Sensor manufacturer (if known) and sensor type.
SENSOR Sensor manufacturer (if known) and sensor type.
24.6 MP
Sony Exmor RS CMOS Full Frame Sensor
42.4 MP
EFFECTIVE MEGAPIX The number of effective megapixels (MP).
24.6 MP
35.9 x 24.0 mm
SENSOR SIZE
35.6 x 23.8 mm
7952 x 5304 pixels
MAX. RESOLUTIONMaximum still image resolution
MAX. RESOLUT.Maximum still image resolution
6000 x 4000 pixels
1x
CROP FACTORA 50mm lens on a camera with a crop factor of 1.5x would behave like a 75mm lens on a full-frame camera with a crop factor of 1x (50mm x 1.5 = 75mm)
1x
Bayer array
COLOR FILTER
Bayer array
4.5 μm
PIXEL PITCHThe center-to-center distance between two pixels (photosites) on a sensor. The larger the photosites, the more light they can capture and the lower is the level of visible "noise" in captured images.
5.9 μm
None
LOW-PASS FILTERA low-pass filter blurs fine details of an image to eliminate the moiré and the color artifacts of finely patterned structures. Without a low-pass filter images will appear sharper, but there is also a risk of moiré occurring in certain scenes.
Fixed
3:2
NATIVE
ASPECT RATIOThe width to height ratio of the "straight out of the camera" images. However, most modern digital cameras are capable of producing images in various aspect ratios.
ASPECT RATIOThe width to height ratio of the "straight out of the camera" images. However, most modern digital cameras are capable of producing images in various aspect ratios.
ASPECT RATIOThe width to height ratio of the "straight out of the camera" images. However, most modern digital cameras are capable of producing images in various aspect ratios.
3:2
Sony Alpha 7R IIIA
DXOMARK
SENSOR
SCOREAnalysis of the camera image quality by dxomark.comSony Alpha 9 III
100
OVERALL SCOREDXOMARK Sensor Overall Score shows a camera's sensor quality in terms of noise, ability to render high contrast, formation of colored noise, ability to shoot in low light.
Not tested
14.7
DYNAMIC RANGEThe maximum dynamic range performance (DXOMARK Landscape Score) in exposure value (EV)
Not tested
3523
LOW-LIGHT ISOThe low-light sensitivity performance (DXOMARK Sports Score) in ISO sensitivity value
Not tested
Sony Alpha 7R IIIA
Sony Alpha 9 III
COVERAGE:
100 %
100 %
REAL SIZE:
0.78
0.78
VIEWFINDERThe viewfinder frame COVERAGE in percent and the real viewfinder SIZE (VF magnification corrected by the crop factor of a camera — this way cameras with different sensor sizes can be compared).
COVERAGE:
100 %
100 %
REAL SIZE:
0.90
0.90
Electronic
(3 686 400 dot OLED)
(3 686 400 dot OLED)
VF TYPE
Electronic
(9 437 184 dot OLED)
(9 437 184 dot OLED)
Articulated
2 359 296 dot LCD
2 359 296 dot LCD
REAR SCREEN
Articulated
2 095 104 dot LCD
2 095 104 dot LCD
3 inch
SCREEN SIZE
3.2 inch
LIVE VIEW & TOUCH SCREEN
No top LCD panel
TOP LCD PANELLCD panel on top of the camera which provides information about the current camera settings.
No top LCD panel
Sony Alpha 7R IIIA
Sony Alpha 9 III
Hybrid detection
AUTOFOCUS SYSTEM
AF SYSTEM
Hybrid detection
Fast Hybrid AF
AUTOFOCUS MODULE
AF MODULE
Fast Hybrid AF
399 (phase)
425 (contrast)
399
(phase) 425
(contrast)
FOCUS POINTSAutofocus points
as shown in the figures below:
° linear sensors
° cross-type sensors
° dual cross-type sensors
contrast autofocus areas
as shown in the figures below:
° linear sensors
° cross-type sensors
° dual cross-type sensors
contrast autofocus areas
759 (phase)
425 (contrast)
759
(phase) 425
(contrast)0
CROSS-TYPE FOCUS POINTS
CROSS-TYPE FP
0
-3
EV
100
The minimum exposure value of the AF working range (at 23°C and ISO 100). The smaller this value, the less light is needed for normal autofocus operation.-5
66 %
AF COVERAGEFrame coverage by AF sensors in percent.
96 %
None
IN-BODY
AF MOTORAn in-body AF motor gives the ability to auto-focus with older lenses which don't have their own motors.
AF MOTORAn in-body AF motor gives the ability to auto-focus with older lenses which don't have their own motors.
None
5-axis sensor shift
IN-BODY IMAGE STABILIZATION
IMAGE STABILIZ.
5-axis sensor shift
Sony Alpha 7R IIIA
Sony Alpha 9 III
Dual BIONZ X CXD4236-1
IMAGE
PROCESSOR
PROCESSOR
Dual BIONZ XR
14 bit RAW, JPEG
OUTPUT FORMATS
14 bit RAW, 10 bit HEIF, JPEG
Auto, 100 - 32000
(can be extended to ISO 50, 102400)
(can be extended to ISO 50, 102400)
ISO SENSITIVITY
Auto, 250 - 25600
(can be extended to ISO 125, 51200)
(can be extended to ISO 125, 51200)
10
fps
fps
CONTINUOUS DRIVEMaximum frames per second (fps) in continuous drive mode when using the mechanical shutter.
CONT. DRIVEMaximum frames per second (fps) in continuous drive mode when using the mechanical shutter.
120
fps
fps
76 JPEG shots
76 RAW shots
76 RAW shots
MAX. BURSTMaximum number of shots in high-speed continuous drive mode until the buffer is full.
192 JPEG shots
96 RAW shots
96 RAW shots
2160p @ 30 fps (4K)
MAX. VIDEO RESOLUTION
VIDEO
2160p @ 120 fps (4K)
-5/+5 EV (in 1/3 or 1/2 EV steps)
EXPOSURE COMPENSATION
EXPOSURE COMPENS.
-5/+5 EV (in 1/3 or 1/2 EV steps)
Bulb,
30 sec → 1/8000 sec
30 sec → 1/8000 sec
SHUTTER SPEED Maximum and minimum possible exposure time in seconds.
Bulb,
30 sec → 1/80000 sec
30 sec → 1/80000 sec
Sony Alpha 7R IIIA
Sony Alpha 9 III
X-SYNC:
1/250
No
built-in
flash
built-in
flash
No
flash
BUILT-IN FLASH
No
built-in
flash
built-in
flash
No
flash
X-SYNC:
1/500
Yes
HOT SHOE
Yes
USB 3.2 (5 Gbit/sec)
USB
USB 3.2 (10 Gbit/sec)
Microphone port, Headphone port, HDMI
CONNECTIONS
CONNECT.
Microphone port, Headphone port, HDMI
BUILT-IN
DEVICES
DEVICES
SD, SDHC, SDXC (UHS-I/II compatible), Sony Memory Sticks
STORAGE TYPES
CFexpress Type A, SD, SDHC, SDXC (UHS-I/II compatible)
2
CARD SLOTS
2
530
shots
shots
BATTERY LIFEMaximum number of images that can be shot per single battery charge (according to CIPA).
400
shots
shots