Sony A7S III vs A7c
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Sony A7c vs Sony A7S III - Which one to choose and why?
Why choose the Sony A7S III?
Higher ISO sensitivity
102 400 vs. 51 200
More cards available
2 vs. 1
Better processor
BIONZ XR vs. BIONZ X
Higher max speed (mech.)
1/8 000s vs. 1/4 000s
Larger buffer
1000 images vs. 45 images
Better viewfinder resolution
9.44 M-dot vs. 2.36 M-dot
Better screen resolution
1.44 M-dot vs. 0.92 M-dot
Larger screen
3.15" / 8 cm vs. 2.95" / 7.5 cm
More Focus points
759 vs. 693
Higher max video resolution
4K UHD 120 fps vs. 4K UHD 30 fps
Why choose the Sony A7c?
Newer camera
September 2020 vs. August 2020
More megapixels
24.2Mp vs. 12.2Mp
Cheaper body
0$ / 1359£ / 1 599€ vs. 3 998$ / 3569£ / 4 199€
Camera 191g lighter
1.12 lb / 508 g vs. 1.54 lb / 699 g
More compact
124×71×60 mm vs. 129×97×70 mm
40% smaller body
32.22 in3 / 528 cm3 vs. 53.4 in3 / 875 cm3
33% longer battery life
680 images vs. 510 images
More sensitive low-light sensor
-4 EV vs. -3 EV
In September 2023, Sony decided to release the Sony A7C II, a lightweight evolution of this camera, especially in terms of video (60i/s).
Technical specifications - Sony A7S III vs Sony A7c
General
| Sony A7S III | Sony A7c | ||
Release Date | August 2020 | VS | September 2020 |
Mount | FE | VS | FE |
Definition | 12.2 Mp | VS | 24.2 Mp |
Sensor Size | Full Frame | VS | Full Frame |
Image Stabilization | Yes | VS | Yes |
ISO Sensitivity | 100 - 102 400 | VS | 100 - 51 200 |
ISO étendus | 40 - 409 600 | VS | 50 - 204 800 |
Card Slots | 2 | VS | 1 |
Card Type | 1 x SD (UHS-II) 1 x CF Express Type A | VS | 1 x SD (UHS-II) |
Processor | BIONZ XR | VS | BIONZ X |
Prix recommandé | 3 998$ / 3569£ / 4 199€ | VS | 0$ / 1359£ / 1 599€ |
Viewfinder Features
| Sony A7S III | Sony A7c | ||
Resolution | 9.44 M-dot | VS | 2.36 M-dot |
Magnification | 0.91x | VS | 0.59x |
Autofocus Features
| Sony A7S III | Sony A7c | ||
Sensibilité AF | -3 / 20 EV | VS | -4 / 20 EV |
Number of Focus Points | 759 | VS | 693 |
Video
| Sony A7S III | Sony A7c | ||
Maximum Resolution | 4K UHD 120 i/s 1080p 240 i/s | VS | 4K UHD 30 i/s 1080p 120 i/s |
Format d'enregistrement | VS | ||
Recording Time Limit | - | VS | 780 min |
DxO Score
| Sony A7S III | Sony A7c | ||
Général | 86 | VS | 95 |
Portrait | 23.7 | VS | 25.0 |
Paysage | 13.9 | VS | 14.7 |
Sports | 2 520 | VS | 3 407 |
Physical Characteristics
| Sony A7S III | Sony A7c | ||
Weather-Sealed | Yes | VS | Yes |
Type de batterie | NP-FZ100 | VS | NP-FZ100 |
Weight | 1.54 lb / 699 g | VS | 1.12 lb / 508 g |
Dimensions (W×H×D)
| 5.1 × 3.8 × 2.8" 129 × 97 × 70 mm | VS | 4.9 × 2.8 × 2.4" 124 × 71 × 60 mm |
Volume | 53.4 in3 / 875 cm3 | VS | 32.22 in3 / 528 cm3 |
Viewfinder Battery Life
| 510 images | VS | 680 images |
LCD Battery Life | 600 images | VS | 740 images |
Built-in Flash
| No | VS | No |
Maximum Flash Sync Speed | 1/250s | VS | 1/160s |
Vitesse min. | 30s | VS | 30s |
Vitesse max. (méca.) | 1/8 000s | VS | 1/4 000s |
Vitesse max. (élect.) | 1/8 000s | VS | 1/8 000s |
Rafale max. (méca.) | 10 fps | VS | 10 fps |
Rafale max. (élect.) | 10 fps | VS | 10 fps |
RAW Buffer | 1 000 images | VS | 45 images |
Screen Features
| Sony A7S III | Sony A7c | ||
Type | Fully-articulating | VS | Fully-articulating |
Resolution | 1.44 M-dot | VS | 0.92 M-dot |
Diagonal | 3.15" / 8 cm | VS | 2.95" / 7.5 cm |
Touchscreen | Yes | VS | Yes |
Optional Features
| Sony A7S III | Sony A7c | ||
Wi-Fi / Bluetooth | Yes / Yes | VS | Yes / Yes |
Headphone Jack | Yes | VS | Yes |
USB Version | USB-C 3.2 | VS | USB-C 3.2 |
GPS | No | VS | No |
Time Lapse | Yes | VS | Yes |
Recommended lenses
Check recommended lenses for these cameras
Suggested Accessories
For Sony A7S III
For Sony A7c
Others VS to check
Sony A7S III
Detailed comparison by Sylvain PONS
As a photography enthusiast, I've spent a lot of time exploring, comparing and analysing these cameras' features to help you make the right choice!
This comparison may contain affiliate links, and we may earn a commission if you decide to buy your camera through our links. Of course, the price doesn't change for you. If you've enjoyed this page, it's your way of supporting our work. Thanks!
Sources: Sony A7S III, Sony A7c


Release Date
Mount
Definition
Sensor Size
Image Stabilization
ISO Sensitivity
Card Slots
Processor
Prix recommandé
Magnification
Sensibilité AF
Number of Focus Points
Maximum Resolution
Format d'enregistrement
Recording Time Limit
Général
Portrait
Paysage
Sports
Weather-Sealed
Type de batterie
Weight
Dimensions (W×H×D)
Volume
Viewfinder Battery Life
Built-in Flash
Maximum Flash Sync Speed
Vitesse min.
Rafale max. (méca.)
RAW Buffer
Diagonal
Touchscreen
Wi-Fi / Bluetooth
Headphone Jack
USB Version
GPS
Time Lapse










