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Sony a7 IV Mirrorless Digital Camera vs Sony a7III Full Frame Mirrorless Camera with FE 28-

Updated August 2026 — Sony a7 IV Mirrorless Digital Camera wins on video quality and resolution, Sony a7III Full Frame Mirrorless Camera with FE 28- wins on price and battery life.

The Sony a7 IV offers superior features and performance, making it the better choice for advanced users. However, the a7III remains a strong contender for those on a budget.

Why Sony a7 IV Mirrorless Digital Camera is better

Higher Resolution

33MP vs 24.2MP

Better Video

4K 60p vs 4K 30p

More Accessories

Includes extensive bundle

Why Sony a7III Full Frame Mirrorless Camera with FE 28- is better

Lower Price

$1,898 vs $2,298

Proven Battery Life

610 shots vs unspecified

Good Value

Excellent performance for the cost

Overall score

Sony a7 IV Mirrorless Digital Camera
88
Sony a7III Full Frame Mirrorless Camera with FE 28-
80

Specifications

SpecSony a7 IV Mirrorless Digital CameraSony a7III Full Frame Mirrorless Camera with FE 28-
Sensor33MP Exmor R24.2MP BSI
AF Points759693
Video FPS6030
ISO Range100-5120050-204800
Weight650g650g

Dimension comparison

Sony a7 IV Mirrorless Digital CameraSony a7III Full Frame Mirrorless Camera with FE 28-

Overview of the Cameras

The Sony a7 IV Mirrorless Digital Camera is priced at $2,298.00, while the Sony a7III Full Frame Mirrorless Camera is available for $1,898.00, making the a7III about 17% cheaper. Both cameras are excellent choices for photography enthusiasts and professionals alike, but they cater to slightly different audiences with their unique features and capabilities.

Image Quality and Performance

The Sony a7 IV boasts a 33MP full-frame Exmor R CMOS sensor, providing enhanced clarity and vibrant color rendering. This advanced sensor is designed for both still photography and video, supporting 4K 60p recording. In comparison, the Sony a7III features a 24.2MP BSI full-frame image sensor with a remarkable 15-stop dynamic range. While both cameras deliver high-quality images, the a7 IV offers superior resolution, making it more suitable for those who prioritize detail in their images.

Autofocus and Shooting Speed

When it comes to autofocus, the Sony a7 IV excels with its 759-point Fast Hybrid AF system, ensuring rapid and accurate focusing. It can shoot up to 10 frames per second, a speed that is also matched by the Sony a7III. However, the a7III's autofocus system includes 693 phase detection points and 425 contrast AF points, providing a robust performance. While both cameras perform well in fast-paced shooting situations, the a7 IV's superior autofocus capabilities give it an edge for capturing fast-moving subjects.

Video Capabilities

The Sony a7 IV is specifically built to cater to filmmakers, offering robust 4K video recording at 60 frames per second. It supports 10-bit color depth and features like S-Cinetone, making it a strong candidate for content creators. The a7III, while still capable of impressive video quality, lags behind with its 4K recording limited to 30 frames per second. Therefore, for those focused on video production, the a7 IV is the clear choice.

Lens and Accessories

Both cameras come bundled with the Sony FE 28-70mm f/3.5-5.6 OSS lens, which is versatile for various shooting scenarios. The a7 IV package includes not just the lens but also an extensive array of additional accessories such as a spare battery, multiple filters, and a comprehensive software kit for editing. The a7III also comes with a solid accessory bundle, including two 64GB memory cards and a cleaning kit. While both bundles are generous, the a7 IV’s offering is superior for those who want a complete package right out of the box.

Usability and Design

Design-wise, both cameras maintain a similar aesthetic typical of Sony's mirrorless range, with ergonomic grips and well-placed controls. The a7 IV features a 3.68m-dot EVF with a 120 fps refresh rate and a 3-inch vari-angle touchscreen LCD, enhancing usability for both photography and videography. The a7III, while equipped with a reliable 3-inch LCD, does not offer a vari-angle display, which can be limiting for certain shooting angles. Therefore, for users who value flexibility in their shooting angles, the a7 IV's design is more advantageous.

Battery Life

Battery life is an essential factor for photographers, and the Sony a7III offers impressive performance with approximately 610 shots via the viewfinder and 710 shots on the LCD monitor. The a7 IV does not specify its battery life but includes a similar NP-FZ100 battery, suggesting comparable longevity. However, the a7III’s proven battery performance is a reliable aspect for those who shoot extensively without immediate access to charging.

Price and Value for Money

The Sony a7III is priced at $1,898.00, ensuring it remains competitive in the market as a full-frame mirrorless camera. In contrast, the a7 IV, priced at $2,298.00, offers advanced features justifying its higher cost. For budget-conscious buyers, the a7III provides excellent value while still delivering professional-grade performance. However, for those who need the latest technology and superior features, the a7 IV presents a compelling case for the extra investment.

Which should you buy?

Choosing between the Sony a7 IV and the a7III ultimately depends on your specific needs and budget. The a7 IV is ideal for those who prioritize advanced video capabilities, higher resolution, and a more extensive accessory bundle. On the other hand, the a7III is a more affordable option that still offers excellent image quality and performance, making it a fantastic choice for photographers who want great results without breaking the bank. If you require cutting-edge features, go for the a7 IV; if value for money is your primary concern, the a7III is the way to go.