Sony a6700 Alpha APS-C Mirrorless Camera vs Sony a7III Full Frame Mirrorless Camera with FE 28-
Updated August 2026 — Sony a6700 Alpha APS-C Mirrorless Camera wins on video and size, Sony a7III Full Frame Mirrorless Camera with FE 28- wins on battery and weight.
The Sony a6700 excels in video capabilities and advanced autofocus, while the a7III offers superior low-light performance and battery life. Choose based on your specific needs.
Why Sony a6700 Alpha APS-C Mirrorless Camera is better
Video Quality
a6700 supports 4K/120p recording
Autofocus
a6700 has advanced AI-based tracking
Weight
a6700 is lighter and more portable
Why Sony a7III Full Frame Mirrorless Camera with FE 28- is better
Low-Light
a7III has better performance in low-light conditions
Battery Life
a7III lasts longer on a single charge
Dynamic Range
a7III offers 15 stops of dynamic range
Overall score
Specifications
| Spec | Sony a6700 Alpha APS-C Mirrorless Camera | Sony a7III Full Frame Mirrorless Camera with FE 28- |
|---|---|---|
| Sensor | 26MP APS-C | 24.2MP Full Frame |
| ISO Range | 100-32000 | 50-204800 |
| AF Points | 759 | 693 + 425 |
| Video FPS | 4K/120p | 4K/30p |
| Dynamic Range | 14 stops | 15 stops |
Dimension comparison
Introduction to the Cameras
The Sony a6700 Alpha APS-C Mirrorless Camera and the Sony a7III Full Frame Mirrorless Camera are both excellent options for photographers, but they cater to different needs and preferences. Priced identically at $1,898.00, each camera offers unique features that can significantly impact your photography experience.
Design and Build Quality
Both cameras exhibit robust design and build quality, but they differ in size and weight. The Sony a6700 features a compact design typical of APS-C cameras, making it lightweight and easy to carry for travel and street photography. On the other hand, the Sony a7III, being a full-frame camera, is slightly bulkier, which may be less convenient for on-the-go shoots. However, the a7III's body provides a more substantial grip, which many photographers appreciate during extended use.
Image Sensor and Quality
The Sony a6700 boasts a 26MP APS-C format Exmor R back-illuminated CMOS sensor, while the a7III features a 24.2MP full-frame sensor. While the a6700 has a higher megapixel count, the full-frame sensor of the a7III allows for better performance in low-light conditions and offers a wider dynamic range with 15 stops. This difference can be crucial for photographers who often work in diverse lighting environments.
Autofocus Performance
Autofocus is a key feature for modern cameras, and both models excel in this area. The Sony a6700 employs 759 phase-detection AF points, covering 93% of the frame, which allows for fast and accurate focusing. In comparison, the a7III features 693 phase-detection and 425 contrast-detection points, also covering 93% of the frame. While the autofocus systems are comparable, the a6700's advanced AI-based Real-time Tracking may provide an edge for dynamic subjects, making it ideal for action photography.
Video Capabilities
When it comes to video recording, the Sony a6700 shines with its 4K/60p recording and high frame rate options, including 4K/120p. This model supports 6K oversampling, allowing for high-quality video output. The a7III also supports 4K recording but is capped at 30p for full-frame shooting. For videographers seeking advanced features, the a6700 offers more versatility, particularly in high-frame-rate scenarios.
Battery Life
Battery life is an essential factor for any photographer, and here the a7III has the upper hand. It boasts a battery life of approximately 610 shots with the viewfinder and 710 shots on the LCD monitor, which is significant for long shooting days. In contrast, the battery performance of the a6700 is not specified in this data, but generally, APS-C cameras tend to have shorter battery life. For users who prioritize extended shooting sessions, the a7III is the better option.
Bundled Accessories
Both cameras come with appealing bundles that enhance their value. The Sony a6700 includes a comprehensive kit with a Deco Gear Photography Bag, an extra battery, a dual charger, and a bounce zoom flash, making it suitable for those who want to start shooting immediately. The a7III package offers a similar level of support, including a Deco Gear Bag and a lens kit with additional telephoto and wide-angle lenses. Both bundles provide great added value, but the a6700's extra battery and charger may be particularly beneficial for users who require more shooting time.
Price and Value
Both the Sony a6700 and the a7III are priced at $1,898.00, making them equally accessible in terms of cost. However, if you look at the average prices over the past 90 days, the a7III averages around $1,894.49, making it slightly cheaper by about $3.51. Given that both cameras serve different user needs, your choice may depend on whether you value the latest features of the a6700 or the full-frame capabilities of the a7III.
Which should you buy?
Choosing between the Sony a6700 and the Sony a7III ultimately depends on your specific photography needs. If you prioritize video capabilities, a lightweight design, and advanced autofocus features, the a6700 may be the better choice. Conversely, if you seek superior low-light performance, longer battery life, and a more substantial feel in hand, the a7III would likely serve you better. Both models are strong contenders in the mirrorless camera market, ensuring that photographers of all levels can find a suitable option that fits their style and requirements.

