Is Upgrading from the Sony Alpha 7 III to the Alpha 7 IV the Right Move?

When Sony released the Sony Alpha 7 III back in 2018, it quickly redefined expectations for full-frame mirrorless cameras. With impressive image quality, dependable autofocus, and solid video features — all at a competitive price — it became a favorite among both enthusiasts and professionals.

Enter the Sony Alpha 7 IV, launched in late 2021. Positioned as a true hybrid camera, it introduces a range of upgrades built on the strong foundation of the A7 III. But if you already own the A7 III, is moving to the A7 IV a smart decision?

Let’s explore the most significant differences and who will benefit most from the switch.

1. Image Sensor and Performance Enhancements

• A7 III: 24.2MP full-frame BSI sensor
• A7 IV: 33MP full-frame BSI sensor with BIONZ XR processor

The A7 IV’s 33-megapixel sensor offers a noticeable boost in resolution, allowing for greater cropping flexibility and finer detail — especially useful in landscape, portrait, or commercial photography. Alongside that, the upgraded BIONZ XR processor delivers faster performance, more accurate color reproduction, and a broader dynamic range. Skin tones, in particular, look more natural and refined — a notable improvement over the A7 III’s sometimes inconsistent rendering.

For professionals or anyone demanding extra detail and dynamic control, this upgrade can be a game-changer.

2. Autofocus: Smarter and More Versatile

• A7 III: Eye AF for humans (limited in video)
• A7 IV: Real-time Eye AF for humans, animals, and birds (in both photo and video)

One of the A7 IV’s standout features is its advanced autofocus system. Borrowed from Sony’s flagship models, it now offers real-time tracking for a wider range of subjects — including pets and wildlife — and works seamlessly in video modes as well.

If you regularly shoot fast-moving subjects or unpredictable environments, this alone might make the upgrade worthwhile.

3. Significant Video Improvements

• A7 III: 4K30p, 8-bit, no 4K60
• A7 IV: 4K60p (Super 35), 10-bit 4:2:2, S-Cinetone, no record limit

For creators who rely heavily on video, the A7 IV is a big leap forward. With internal 10-bit 4:2:2 recording, improved color profiles like S-Cinetone, and support for 4K at 60fps (albeit in a Super 35 crop), it brings far more flexibility and higher-end quality.

Sony has also added features like focus breathing compensation and removed the video time limit — clear signs the A7 IV was designed with content creators in mind.

4. User Experience and Design Enhancements

While the A7 IV maintains a similar body design, it introduces several usability improvements:

• Fully articulating touchscreen — ideal for vloggers and solo shooters
• More ergonomic grip for extended sessions
• Dedicated mode dial for Photo/Video/S&Q — enabling quick mode switching

These small tweaks significantly improve handling, especially for hybrid shooters who frequently jump between video and still photography.

5. Overhauled Menu System

One of the most common complaints about the A7 III was its menu system. The A7 IV addresses this with a refreshed UI that includes:

• A more intuitive structure
• Touchscreen navigation throughout
• Better menu flow, reducing time spent searching for settings

This streamlined interface makes the camera feel more modern and efficient, especially during fast-paced shoots.

6. Connectivity and Storage Advancements

Future-facing features give the A7 IV a clear edge:

• Dual card slots, now supporting CFexpress Type A for faster write speeds
• Faster USB-C 3.2 port for tethering and transfers
• Native USB streaming support — no capture card needed

These additions make the A7 IV better suited for professional workflows, studio setups, and live content production.

7. The Cost Factor: Worth the Price Jump?

• A7 III (mid-2025): ~$1,500 (used/discounted)
• A7 IV: ~$2,400 (new)

The price difference is substantial. If your A7 III is still delivering great results and you primarily shoot stills, you may not feel a strong need to upgrade. But for professionals, hybrid creators, or anyone needing cutting-edge autofocus and video tools, the added investment delivers measurable returns.

Final Verdict: Who Should Consider Upgrading?

You’ll benefit from the A7 IV if you:

• Shoot video professionally or frequently
• Need advanced autofocus for fast-moving or unpredictable subjects
• Want higher resolution and better color science
• Value improved interface and future-proof features

You might stick with the A7 III if:

• You mainly shoot stills and are satisfied with the current results
• You’re on a tighter budget
• You prefer to wait for the next-gen A7 V

In Summary

The Sony Alpha 7 IV isn’t just a refinement — it’s a serious evolution of the A7 III’s legacy. With a higher-res sensor, smarter autofocus, major video upgrades, and a vastly improved user experience, it’s designed for the demands of today’s hybrid shooters.

Still, the Sony Alpha 7 III holds its ground well, even years after release. But if your creative ambitions are growing — or you need more flexibility and power — the A7 IV is a compelling, future-ready choice.