Sony a7 III
Release date: 2018
Reviewed by


Key features
Sensor Size: | Full Frame (35.8 x 23.8mm) |
Megapixels: | 24 |
Lens Mount: | Sony E |
LCD Size (inches): | 3 |
ISO Range: | 100 - 51200 |
Frames Per Second: | 9.9 |
Auto Focus Points: | 693 |
Video Resolution: | 3840x2160 (30p/25p/24p) |
Battery Life: | 710 shots |
Weight: | 650 g (1.43 lb / 22.93 oz) |
Size: | 127 x 96 x 74 mm (5 x 3.78 x 2.91″) |
Price: | $$$ |
Great for:




Body Type: Mirrorless Camera
Based on some of the key specifications of the Sony a7 III and our review, we found that this camera is best for the following uses: Sports & Action, Portraits, Video, Vlogging
BestPhotographyGear is a participant in the B&H Photo and Amazon Services LLC Associates Programs, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com and B&H.com.
As an Amazon and B&H Associate I earn from qualifying purchases.
Spec Summary
![]() |
MS PRO Duo / SD / SDHC / SDXC |
![]() |
![]() |
![]() |
9.9 |
![]() |
![]() |
![]() |
693 |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
How the Sony a7 III Compares
Sensor Size Comparison
The Sony a7 III has a Full Frame sensor. The color, contrast, noise, and clarity of your images are dependent on the sensor and pixel quality. So we address these specs in more detail.
Be sure to review the Crop Factor since that is important for the lenses you select.


Sony a7 III Sensor: Full Frame (35.8x23.8mm)
Resolution and Image Print Size
Here's the best resolution you can expect from the Sony a7 III. Image resolution is a reference of the amount of image detail your pictures will hold, here measured as pixel dimensions. Higher resolution images will contain more pixels. As you can see in the comparison image below, to be considered as High Definition (HD) you'd need at least 1920x1080 pixels, or 2.1 megapixels. For images with 4K you'd need at least 4096x2160 pixels, which would be at least 8.3 megapixels.
Best Digital Resolution for Sony a7 III

Largest Recommended Print Size for Sony a7 III

Maximum High Resolution Print Size (300 dpi)
When it comes to printing out your images for clients or family and friends the best printing quality is at least 300 DPI. You can think of DPI, or "dots per inch", as how many ink droplets are contained within a square inch of your print.
Based on the resolution of the Sony a7 III the image below shows the largest recommended print size, in order to preserve the best image quality of your photo. When determining the maximum print size we assume you are starting with an image at the full resolution of the camera. Many factors go into print quality, including whether you've cropped your image, which also reduces the print size based on how much you crop the image.


Sony a7 III Pixel Size
After sensor size, pixel size is an important characteristic related to image quality. For a given sensor size larger size pixels on a camera sensor are generally better at sensing light and contrast.
This generally translates into less noise in your image. It is also a related aspect to a camera’s low light or indoor performance. The Sony a7 III has a calculated pixel size of 5.97 microns.


Sony a7 III Size Comparison
The Sony a7 III measures out to 127 x 96 x 74 mm (5 x 3.78 x 2.91″). Remember to account for any lenses or other accessories you might pair with your camera to figure out an overall size.


Sony a7 III Weight Comparison
This is how the Sony a7 III measures up to other common portable electronics. For portability also take a look at the size in the section above.






Sony a7 III Battery Life Estimates
If you’re wondering how long your camera battery will last, the CIPA rating for the Sony a7 III is 710 shots.
In order to put this into context we’ve provided an hour estimate based on common uses. This is meant to be a general guideline and will fluctuate based on the camera features you’re using, such as video or continuous focus.

How long before next charge?
Everyday Shooting

How long before next charge?

23.67 hours
* This rating is based on an estimate of 30 photos an hour.Photoshoot or Studio Shooting

How long before next charge?

2.84 hours
* This rating is based on an estimate of 250 photos an hour. Many photographers will take less but this will cover even those that are trigger happy.Sony a7 III Specs
Sensor
![]() |
24 |
![]() |
BSI-CMOS |
![]() |
Full Frame |
![]() |
1 |
![]() |
Fixed |
![]() |
Sensor-shift |
![]() |
Bionz X |
![]() |
Sony E |
Image
![]() |
100 - 51200 |
![]() |
50 - 204800 |
![]() |
30 sec |
![]() |
1/8000 sec |
![]() |
Yes |
![]() |
No |
![]() |
1/250 |
Display
![]() |
3 |
![]() |
921600 |
![]() |
Yes |
![]() |
Electronic |
![]() |
0.78× |
![]() |
1 |
![]() |
Yes |
![]() |
Yes |
![]() |
Yes |
Connections & Storage
![]() |
MS PRO Duo / SD / SDHC / SDXC |
![]() |
UHS-II |
![]() |
Yes |
![]() |
Yes |
![]() |
No |
![]() |
Yes |
![]() |
Yes |
![]() |
Yes |
![]() |
USB 3.2 Gen 1 (5 GBit/sec) |
Video
![]() |
3840x2160 (30p/25p/24p) |
![]() |
MPEG-4, AVCHD, XAVC S, H.264 |
Speed
![]() |
9.9 |
![]() |
693 |
![]() |
No |
![]() |
163 |
![]() |
33 |
Body & Battery
Have any Questions?
If you're considering whether to purchase the Sony a7 III and have any questions we're happy to help. We also provide buying advice for Sony a7 III lenses and accessories, so feel free to reach out and ask us if your not quite sure what to get.
Sony a7 III Specifications Table
Megapixels | 24 |
Sensor Type | BSI-CMOS |
Sensor Size | Full Frame |
Crop factor | 1 |
AA Filter | Fixed |
Body Stabilization | Sensor-shift |
Processor | Bionz X |
Lens Mount | Sony E |
ISO Range | 100 - 51200 |
Expanded ISO Range | 50 - 204800 |
Minimum Shutter Speed | 30 sec |
Maximum Shutter Speed | 1/8000 sec |
Bulb Mode | Yes |
Built-in Flash | No |
Flash Sync Speed | 1/250 |
LCD Size (inches) | 3 |
LCD Resolution | 921600 |
Touch Screen | Yes |
Viewfinder Type | Electronic |
Viewfinder Magnification | 0.78× |
Viewfinder Coverage | 1 |
Articulating LCD | Yes |
Top LCD Screen | Yes |
Focus Peaking | Yes |
Memory Card Slot | MS PRO Duo / SD / SDHC / SDXC |
UHS Support | UHS-II |
Wi-Fi | Yes |
NFC | Yes |
GPS | No |
Bluetooth | Yes |
Microphone Jack | Yes |
HDMI | Yes |
USB Type | USB 3.2 Gen 1 (5 GBit/sec) |
Video Resolution | 3840x2160 (30p/25p/24p) |
Video Format | MPEG-4, AVCHD, XAVC S, H.264 |
Frames per Second | 9.9 |
Auto Focus Points | 693 |
Time Lapse | No |
JPEG Buffer | 163 |
RAW Buffer | 33 |
Battery | NP-FZ100 |
Battery Life | 710 shots |
Environmentally Sealed | Yes |
Weight | 650 g (1.43 lb / 22.93 oz) |
Size | 127 x 96 x 74 mm (5 x 3.78 x 2.91″) |
Price | $$$ |
Frequently Asked Questions for the Sony a7 III
-
Does the Sony a7 III have in-body Image Stabilization?
The Sony a7 III includes: Sensor-shift Image Stabilization.
-
Does the Sony a7 III have Environmental Weather Sealing?
This model does have Weather Sealing.
-
Does the Sony a7 III have built-in GPS?
This camera does not feature GPS shot location.
-
What is the Max ISO of the Sony a7 III?
The Max ISO is 100 - 51200. The expanded ISO range will give you 50 - 204800.
-
What is the Sensor Size of Sony a7 III?
The Sony a7 III features a Full Frame sensor.
-
Does the Sony a7 III have a Touch Screen?
This camera model does have a touch screen.
-
How many frames per second (fps) can the Sony a7 III shoot?
This camera is rated for 9.9 fps.
-
What is the Weight of Sony a7 III?
This camera weighs 650 g (1.43 lb / 22.93 oz);
-
What are the Dimensions of Sony a7 III?
This camera's dimensions are 127 x 96 x 74 mm (5 x 3.78 x 2.91″);
-
What kind of memory card slots are on the Sony a7 III?
The Sony a7 III works with MS PRO Duo / SD / SDHC / SDXC memory cards.