Tech / Filmmaking / Photography

The New Sony A7 IV vs Sony A7 III Comparison

Published 29 October 2021

Sony has long been in the business of producing fantastic cameras for their customers, offering an extensive range of models that can accommodate all photographers, regardless of their skill level.

In fact, they are set to launch a new model in their lineup of entry-level full-frame mirrorless cameras – the new Sony A7 IV. Serving as the successor to Sony’s highly popular A7 III, the A7 IV comes with many of its predecessor’s features but only newer and better.

However, considering that the A7 III was already an excellent camera for all-around use, what can the new Sony A7 IV offer?

Well, as it turns out, it can offer a lot more, especially with camera technologies being more advanced than ever. So, if you’re interested to learn more about Sony’s new model, read on below.

Sony a7iv above

What’s New? Sony A7 IV vs. Sony A7III

So, what’s new with the Sony A7 IV? What improvements does it have over the A7 III? Let’s find out.

Updated BSI-CMOS Sensor

Perhaps one of the most notable updates in the A7 IV is its new 33MP BSI-CMOS camera sensor, a definite upgrade from the A7 III’s 24MP sensor. This allows it to capture images with a higher resolution and possibly even image quality, even at a rate of 10 frames per second.

It’s also attached to a newer and improved built-in stabilization unit, so you can expect better photos with less distortion, even with moving subjects. However, the higher resolution only applies to images, with the camera’s maximum video resolution staying at 4K.

The A7 IV is also designed to have a bigger buffer capacity than its predecessor. In this case, Sony states that the new model can capture up to 828 RAW and JPEG images at 10fps before slowing down, a significant improvement over the A7 III’s 79 RAW+JPEG capacity.

New sony a7iv

Improved Autofocus

Better focusing

The A7 III’s autofocus technology was already considered incredible, so the improvements in the A7 IV were just built on that. The new model features 759 AF points, a slight increase from its predecessor’s 693 AF points.

However, one of the notable changes in its autofocus system was its shift from the “Lock-On” feature to the newer “Real-Time Tracking.” This allows you to seamlessly and easily switch your camera’s focus from one part to another, even as your subject moves or walks away.

It also comes with additional modes that enable it to better track and capture images of moving subjects, particularly of animals like birds and household pets.

Better Videos, Not Just Images

4K 60p

Another improvement on the A7 IV over its predecessor is its enhanced capacity for taking high-quality videos. Although the resolution remains steady at 4K, the newer model can now capture videos at a rate of 60p.

10-bit 4:2:2 Up to 600Mbps

Besides this, the A7 IV also offers higher quality and processing flexibility for captured videos at 10-bit/4:2:2 600Mbps compared to the A7 III’s 8-bit/4:2:0, especially when using the camera’s high-dynamic-range (HDR) mode. Recording in the XAVC HS (H265) codec.

It also features the S-Log3 and S-Cinetone profiles for more stunning videos.

You can also carry over your preferred image settings to your videos when shooting, so you can seamlessly switch from stills to videos without adjusting the settings every time.

Mbps video sony a7iv

Low noise rendering imagery

The standard sensitivity range of ISO 100-51200 is expandable to ISO 50-204800 for stills and ISO 100-102400 for movies.

Autofocus tracking for Animals

New capability of tracking animals eyes to maintain sharp imagery.

Sony a7iv auto

Live Stream USB Streaming

Live 4K video streaming directly through USB.

Live streaming sony a7iv

Touch operations

Featuring better touch operations to fine-tune focus and zoom in on images.

Touch example

Multi-axis Movement Monitor

View better with more angles on your monitor. Using the 3.0-type 1.03-million-dot LCD touch-panel monitor has never been better. Upgrading from the old single-direction monitor on the A7III.

More movement on monitor

Sony A7 IV vs. Sony A7 III Table Comparison

Of course, aside from what was already mentioned, the Sony A7 IV has undergone other improvements from the previous model, as shown in the table below.

FeatureSony A7 IIISony A7 IV
SensorFull-frame 24MPFull-frame 33MP
Maximum ISOISO 204800 (stills and videos)ISO 204800 (stills), ISO 102400 (videos)
Autofocus693 AF points, Human/Animal, Lock-On759 AF points, Human/Animal/Bird, AF Assist, Real-Time Tracking, Breathing Compensation, Focus Map
VideoUp to 4K at 30fps, 8-bit/4:2:0Up to 4K at 60fps, 10-bit/ 4:2:2
Viewfinderup to 60 fps, 2.35m dot XGAup to 120 fps, 3.68m dot Quad-VGA
DisplayTiltingMultiple Angles
Storage CompatibilityUHS-II x2CFexpress Type A or UHS-II x1, UHS-II x1
MonitorSingle axis rotationMulti-axis rotation
View here for full Sony A7IV Specs

While some of the changes are subtle, the Sony A7 IV is undeniably an improvement from its predecessor, building on what was already good and improving on what could be improved. However, is it worth the higher price? The answer is ultimately up to you and which camera better suits your needs. After all, the A7 III remains one of the best mirrorless cameras available for all-around use, so it can still be an excellent choice.

Here’s a look at the new camera in detail:

Learn more about other cameras on the market

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My name is April and I love writing about my passions in the Tech world.

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