Compare Sony A7S III vs Sony A7R IV
Connectivity
Ports
HDMI + Headphone + Microphone + Remote Control + USB 3.2 Gen 1
HDMI + Headphone + Microphone + Remote Control + USB 3.2 Gen 1
Wireless Connectivity
802.11ac (dual band) + Bluetooth
802.11ac + Bluetooth 4.1 + NFC
Construction
Adjustment | Tilt
Open to 176 deg, Rotate 270 deg
Adjustable up 107 deg, down 41 deg
Form Factor
Mirrorless camera
Mirrorless camera
Image Size
Full frame (35.6 x 23.8 mm)
Full frame (35.7 x 23.8 mm)
Lens Mount
Sony E-mount
Sony E-mount
Material
Magnesium alloy
Magnesium alloy
Microphone
Stereo
Stereo
Sensor | Resolution
12 MP (4240 x 2832)
61 MP (9504 x 6336)
Sensor | Type
BSI-CMOS
BSI-CMOS
Speakers
Mono
Mono
Dimensions
Size | Depth
81 mm / 3.19 in
78 mm / 3.07 in
Size | Height
97 mm / 3.82 in
96 mm / 3.78 in
Size | Width
129 mm / 5.08 in
129 mm / 5.08 in
Weight
699 g / 24.70 oz
665 g / 23.50 oz
Display
Display Diagonal
3 inch
3 inch
Display Type
Fully articulated TFT LCD
Tilting TFT LCD
Resolution
1,440,000 dots
1,440,000 dots
Viewfinder | Coverage
100%
100%
Viewfinder | Magnification
0.91x
0.78x
Viewfinder | Resolution
9,440,000 dots
5,760,000 dots
Viewfinder | Type
Electronic
Electronic
Function
AE Bracketing
±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
Autofocus
759 focus points
567 focus points
Crop Factor
1.0
1.0
Exposure Compensation
±5 (at 1/3 EV, 1/2 EV steps)
±5 (at 1/3 EV, 1/2 EV steps)
Exposure Mode
Auto / Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
Flash Sync Speed
1/250 s
1/250 s
GPS
No
No
ISO Range
80 ~ 102400 (expands to 40 ~ 409600)
ISO 100 ~ 32000 (expands to 50 ~ 102800)
Image Stabilization
5-axis (5.5 stops)
5.5 stops
Intervalometer
Yes
Processor
Bionz XR
Bionz X
Touch Screen
Yes
Yes
Video Codecs
MPEG-4, XAVC S, XAVC HS, XAVC S-I, H.264, H.265
MPEG-4, XAVC S, H.264
Video Recording
Up to 4K 120p 10bit 4:2:2, up to FHD 240p
Weather Resistance
Yes
Yes
Performance
Battery Life
600 shots
670 shots
Battery Life | Stills
510 shots (Viewfinder) / 600 shots (LCD)
530 shots (Viewfinder) / 670 shots (LCD)
Battery Life | Video
80 min (Viewfinder) / 95 min (LCD)
90 min (Viewfinder) / 105 min (LCD)
Dynamic Range
15 stops
15 stops
Max Burst Rate
10.0 fps
10.0 fps
Shutter Speed
1/8000 to 30 s
1/8000 to 30 s
Storage
Dual SD/CFexpress Type A slots
Dual SD/SDHC/SDXC (UHS-II compatible)
Production
Availability
2020-09
Battery
NP-FZ100 lithium-ion battery charger
NP-FZ100 lithium-ion battery & charger
Debut
2020-07-28
2019-07-16
Made In
Thailand
Model Name
ILCE-7SM3
ILCE-7RM4
Reviews
Neofiliac score
84%
85%
Pros
- Fully articulated LCD
- Long battery life
- 80 base ISO
- 5.5 stops of IBIS
- Good 10.0 fps burst rate
- Rather compact
- Weather-sealed
- Supports CFExpress Type A card
- Very high resolution EVF
- Supports both WiFi and Bluetooth
- Long battery life
- 5.5 stops of IBIS
- Good 10.0 fps burst rate
- Rather compact
- Exceptionally high 61 MP resolution
- Weather-sealed
- High resolution EVF
- Supports both WiFi and Bluetooth
Cons
- Very low 12 MP resolution
- Viewfinder with low 0.78x magnification
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