SONY Cameras
Sony A7 III Review
Sony A7 III is Sony’s modern entry-level camera and a huge upgrade over the older A7 and A7 II. It introduced a new 24 MP backside-illuminated sensor and many modern features such as dual SD card slots, 10 fps continuous shooting, oversampled 4K video recording, USB Type C connectivity and a new improved autofocus system. It also introduced a new more ergonomic body with a larger grip and space for larger batteries.
SONY E-Mount
Sony introduced the E-mount in 2010 alongside their first mirrorless cameras, giving them a huge head start. Over a decade later, there are over 100 native lenses and more than 200 if you include third-party options. Because the mount hasn’t changed, old lenses still work with newer cameras, creating a huge second-hand market. Compare that to Canon and Nikon, which only introduced new mounts in 2018, Sony users have had years to build and upgrade their kits without starting from scratch. For beginners entering the Sony system that means more options and much better prices.
SONY A7 III Price
Sony A7 III Specifications
General
Sony A7 III uses a new 24.2 MP BSI full-frame sensor paired with Sony’s BIONZ X processor (the processor keeps the same name, but it’s a newer generation than in previous models).
In-body 5-axis image stabilization provides up to approximately 5 stops of shake reduction, benefiting both handheld stills and video.
The body is similar to the A7 II, but with a more ergonomic grip. Despite being a full-frame camera, it remains compact for everyday shooting.
Weather sealing is improved over the older A7 II, but it is still not as well weather sealed as the A7R series.
The A7 III introduces a new menu system, but there is no touch sensitivity when in the menu. The touch screen only works for selecting and moving the focus point.
The addition of dual SD card slots alone makes the A7 III a practical camera for professional photographers and videographers. Both slots are now compatible with UHS-II SD cards (instead of slower UHS-I cards that were used in the A7 and A7 II).
The A7 III also upgrades to larger batteries providing about 2.2x as much battery life as the older A7 and A7 II.
Autofocus
Autofocus system in the Sony A7 III is a huge upgrade over the A7 II. AF performance of the original A7 and the A7 II could not compete with DSLRs or with Sony’s APS-C cameras and even in good lighting conditions, images ware often out of focus.
The A7 III uses a new version of Sony’s ‘Fast Hybrid AF’ system, similar to the ‘flagship’ Sony A9. The camera uses 693 points for phase-detection and 425 points for contrast-detection.
Face detection and eye-detection are available for humans and autofocus tracking works well even when the subject is moving. AF performance degrades when in video mode, but it still offers solid tracking.
Since the A7 III introduces a touch screen, you can select the focus point by tapping the screen. You can also move your finger across the screen while looking through the viewfinder to move the focusing point.
This is also the first camera in the A7 series to include the AF joystick.
Photography
Image quality is excellent, with strong dynamic range and very clean high-ISO performance, making it well-suited for low-light photography. Older Sony cameras had issues with color accuracy and even in the A7 III images still have a slight yellow hue, especially noticeable in skin tones, but this won’t be an issue if you shoot RAW.
The A7 III increases continuous shooting speed to up to 10 fps in RAW. The buffer is also significantly improved allowing from 4 and up to 9 seconds of uninterrupted shooting, depending on the shooting mode: 40 frames for uncompressed RAW, 90 for compressed RAW and even up to 170 shots if you don’t mind shooting just JPEGs.
According to Sony, the A7 III now supports 14-bit RAW output even during silent shooting and continuous shooting (the original A7 and A7 II offered 14-bit RAW only in Single Shot Mode and they didn’t even have the electronic shutter).
Using the electronic shutter when photographing fast-moving objects will result in some rolling shutter distortion, as is expected from all cameras that do not use stacked sensors.
Video
Sony A7 III introduces 4K video recording to the A7 series.
The A7 III can record oversampled 4K at 24 fps without a crop (downsampled from 6K) and oversampled 4K at 30 fps with a 1.2x crop (downsampled from about 5K).
Full HD (1080p) recording is available up to 120 fps.
Picture profiles include S-log 2, S-Log 3 and the new HLG color profile. It’s best to avoid using the S-Log 3 option since the camera does not allow 10-bit recording (only 8-bit).
The A7 III unfortunately retains the strict 30-minute recording limit. Battery life now allows for more than 2 hours of recording.
In summary, internal video quality is well suited for YouTube content or social media creators, but for creators who rely on heavy post-processing, the lack of high-quality RAW video or 10-bit recording limits the A7 III compared to more modern models or alternatives from other brands.
| Feature | Sony A7 III |
|---|---|
| Release Date | February 2018 |
| Megapixels | 24.2 MP |
| Image Resolution | 6000 × 4000 |
| Sensor Size | Full Frame |
| Sensor Type | BSI CMOS |
| Image Processor | BIONZ X |
| IBIS | 5-axis, 5 stops |
| Weather Sealing | Yes |
| Lens Mount | Sony E |
| Body Type | Mirrorless |
| PHOTO | |
| Native ISO | 100 – 51,200 |
| Expandable ISO | 50 – 204,800 |
| Shutter Speed | 1/8000 – 30s |
| Burst Rate (Mechanical) | 10 fps RAW |
| Burst Rate (Electronic) | 10 fps RAW |
| Buffer | 40 - 90 RAW |
| Shutter Types | Mechanical, Electronic, EFCS |
| Silent Shooting | Yes (Electronic Shutter) |
| Exposure Compensation | ±5 EV |
| High-Res (Sensor Shift) | No |
| Pre-Capture Mode | No |
| VIDEO | |
| 4K Video | 4K 24fps (oversampled from 6K) / 4K 30fps (oversampled from 5K, 1.2x crop) |
| Max Frame Rate | 4K 30fps (1.2x crop) / 1080p 120fps |
| Bit Depth | 8-bit |
| Recording Limit | 29m 59s |
| Timelapse Recording | Yes |
| AUTOFOCUS | |
| AF System | 'Fast Hybrid AF' |
| AF Points | 693 |
| AF Coverage | 93% Frame Coverage |
| AF Joystick | Yes |
| DISPLAY / VIEWFINDER | |
| Articulated Screen | Tilting |
| Touch Screen | Limited (focus only) |
| LCD Size | 3.0" |
| LCD Resolution | 921,600 |
| EVF Resolution | 2,359,296 |
| EVF Refresh Rate | 60 fps |
| EVF Coverage | 100% |
| EVF Magnification | 0.78× |
| MORE INFO | |
| Card Slot 1 | SD (UHS-II) |
| Card Slot 2 | SD (UHS-II) |
| Sensor Protection System | No |
| USB | Type C 3.1 Gen 1 |
| USB Charging | Yes |
| HDMI | Type D (Micro HDMI) |
| Microphone Port | 3.5 mm |
| Headphone Port | 3.5 mm |
| Built-in Flash | No |
| Built-in Microphone | Yes |
| Battery | NP-FZ100 |
| Battery Life | ~ 700 frames |
| Wi-Fi / Bluetooth | Yes |
| Dimensions | 127 × 96 × 74 mm |
| Weight | 650 g |
Sony A7 III Alternatives
Sony A7 IV
Sony A7 and Sony A7 II use older 24 MP non-BSI sensors and lack many modern features. Sony A7 III was a huge upgrade over these outdated models. It introduced a new better 24 MP BSI sensor and a vastly improved autofocus system alongside a thon of modern features that were lacking in these two models (dual SD card slots, 10 fps high-speed shooting, oversampled 4K video recording, solid weather sealing, USB Type C connectivity). The original A7 and the A7 II are therefore inferior to any other camera on this list.
Sony A7 IV (2021) is not necessarily an upgrade to the A7 III, but an alternative option with a 33 MP sensor sold alongside the A7 III. It features a newer 33 MP BSI sensor and advanced autofocus, making it a powerful hybrid option for both still photographers and video creators. However, the camera does have some drawbacks. High-speed shooting is limited to just 6 fps in RAW (10 fps compressed RAW) and while video capabilities include 4K 60 fps, rolling shutter can be a serious issue due to the high-megapixel sensor (though dynamic range remains excellent).
Sony A7 IV is also more expensive than the A7 III. Pricing in this segment fluctuates over time, but the A7 IV is currently $500 more expensive than the A7 III.
Nikon Z5 II
Nikon made several competitors to Sony’s A7 series. Nikon Z6, Z6 II and Z5 II all use the same 24 MP BSI sensor. Nikon Z5 II is the most recent model and the only one that uses a faster EXPEED 7 processor. It’s a direct competitor to the Sony A7 III, but offers much more in terms of specs and at a similar price.
Nikon Z5 II (2025) uses a 24 MP BSI sensor and Nikon’s new EXPEED 7 processor resulting in great autofocus performance. It features weather sealing, IBIS and duals UHS-II SD card slots. It can shoot at up to 11 fps in RAW with the mechanical shutter (14 fps JPEG), up to 14 fps RAW with the electronic shutter (30 fps JPEG) and it can record oversampled 4K 30 fps video (internally in 12-bit RAW) and 4K at up to 60 fps with a 1.5x crop.
As of now, the Z5 II is definitely the best entry point into Nikon’s full-frame Z system for anyone interested in photography or video.
Canon R8
Canon EOS R (2018, 30 MP) and EOS RP (2019, 26 MP) are entry-level full-frame cameras with older sensors and outdated autofocus performance. They lack IBIS and offer only low-quality heavily cropped 4K video recording, making either of them a poor alternative to any other camera on this list.
Canon EOS R8 (2023) is Canon’s modern entry-level full-frame model and a competitor to the Sony A7 III. It is essentially a more compact and more affordable version of the very popular Canon EOS R6 Mark II, sharing the same 24 MP sensor and highly advanced autofocus system (likely the best autofocus system out of all the cameras on this list). The R8 offers oversampled 4K 60 fps 10-bit recording without a crop (although rolling shutter distortion is noticeable). It lacks IBIS, has no mechanical shutter and has only one card slot. It can shoot at up to 40 fps in 12-bit RAW with the electronic shutter (with noticeable rolling shutter distortion).
The R8 is an extremely capable camera, but for photographers, similarly priced alternatives such as the Sony A7 III and Nikon Z5 II may offer a more well-rounded feature set.
SONY A7 III Price
Final Verdict
Sony A7 III is a very capable camera and likely the best entry point into Sony’s full-frame mirrorless system. Keep in mind that if you want to buy it new, the price is currently much higher than it was a few years ago due to American tariffs. Out of all camera models on the market, the A7 III has seen one of the largest price increases.
It can still be found at an affordable price on the used market since it has been around for quite some time. Sony is known to have by far the largest used camera gear market in the industry and cameras and lenses can often be found at very approachable prices, which is especially helpful for beginners entering the system for the first time.
If you are looking to buy a new camera and are not yet committed to a specific system, similarly priced alternatives from other camera brands, such as the Nikon Z5 II or maybe Canon EOS R8 may offer more features at a similar price point.
More Affordable APS-C Alternatives
If you are a beginner or don’t yet feel the need for full-frame, Sony also offers excellent cameras in its APS-C lineup (the a6000 series), particularly the a6100 and a6400, with the a6700 available at a higher price point.
Nikon Z50 and Z50 II are also excellent, more affordable APS-C alternatives. Pairing them with the two kit lenses – the 16-50mm and the 50-250mm – gives you a high-quality Nikon setup for a fraction of the price of any full-frame kit.