The Sony a7S III is a relatively new edition to the Sony family. It came out in the middle of the pandemic mayhem last year, though, so I feel it hasn’t really gotten its fair dues.
The Sony a7S III is marketed towards videographers. It also makes low light shooting an absolute breeze.
While the Sony a7S III doesn’t feature any crazy video specs that top of the line professional videographers expect, like 6K or 8K footage, its autofocus system works incredibly well, meaning that the Sony a7S III works best for videographers who are shooting in the field. The real world video this camera produces is out of this world.
Unfortunately, the Sony a7S III may only appeal to videographers. The camera only features a 12MP sensor, so its resolution is far less than many other comparable cameras. If you want to be able print enormous photos, this might not be the camera for you.
However, if video is important, this is a great option.
Sony a7S III Specs
The Sony A7S III specs include a 12MP BSI CMOS sensor, an impressive ISO range of 80-102,400, and some of the best video specs around.
These video specs include 4K video at up to 120p, or 60p for an hour long shoot. When you’re shooting 4K at 120p you can expect a small 1.1x crop, but there is no crop in 60p. Conversely, you can shoot up to 240fps in Full HD. The Sony A7S III features 16-bit Raw video output at up to 60p, as well.
Some of the specs on this camera are important for both stills and video shooters. For instance, the camera comes with a fully articulating touchscreen and 5-axis in-body image stabilization. The EVF also features an impressive 9.44m-dot resolution.
Other Sony a7S III Specs Include:
- 12MP BSI CMOS sensor
- Bionz XR processor
- ISO range of 80-102,400
- 4K video at up to 120p with a small crop, or up to 60p with no crop
- Full HD video at up to 240p
- 9.44m-dot EVF
- 3” fully articulating LCD with 1.44m-dots
- 5-axis in-body image stabilization
- Built-in Wi-Fi and Bluetooth
- 1.35 lbs
- 600-shot or 90-min battery life
Sony a7S III Body & Design
The Sony a7S III body features dual card slots that will work with either SD or CFexpress Type A cards.
It also features a microphone jack and a full-size HDMI port that will be helpful if you’re hoping to get the best video quality you can out of this camera.
Other than this, there are not that many physical changes on this camera. The REC button is a bit larger and is now located on the top plate. Speaking of, the top plate is also larger because Sony needed room to house the very impressive EVF.
You should also expect to use the touchscreen more often than you ever have before because you can use the touchscreen to adjust the Fn menu and the main menu.
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Sony a7S III Build & Handling
The Sony a7S III build is sturdy. The camera measures 5.07” x 3.81” x 2.74” and weighs 1.35 lbs. As compared with the Sony A7R IV, the Sony a7S III features a larger grip, which helps with the handle of the camera. It is weather-sealed and comes with some upgraded buttons. For instance, the AF-ON button is very prominent and easy to find. The thumb indent comes with a great grip.
The Sony a7S III handling is also much improved by the fully articulating LCD. The one problem I have with the LCD is that it is of such a low resolution. It is clear that Sony is expecting shooters to use the EVF more often than not. However, the low resolution of the screen doesn’t affect your shooting capabilities at all.
One other thing I should mention about the Sony a7S III design is that the menu has completely changed. If you were happy with the new Sony color coding in newer models, you will likely find this menu even better.
The menu lines up each of its features vertically, so that you can click on any of them to see all of the sub-features in that section. The whole menu is broken down into three sections, so that you can see individual modes while browsing. I’ll admit it’s a bit tricky to explain without the option to play around with it. However, I think it is the best modern menu Sony has come up with.
Sony a7S III Video Performance
The Sony a7S III video performance is likely the most important section in this review because, well, it's essentially a video camera.
I chose Benn TK’s video test above because it showcases all of the best parts of this camera. It showcases its shooting in the real world.
As aforementioned, this camera shoots 4K video at up to 120p, or 60p for up to an hour. The 120p 4K footage comes with a 1.1x crop, while the 60p doesn’t come with a crop at all.
If you’re planning on shooting in Full HD, you can do so at up to 240p.
For internal recording, this camera records at 10-bit 4:2:2, but you can also use the full-sized HDMI port in order to get 16-bit raw output at up to 60p.
The camera also offers a brand new XAVC-HS H.265 HEVC format, which offers literally double the compression efficiency as the older XAVC-S H.264 MP4 format.
The regular in-body image stabilization works really well while shooting video, however if you do want to use the more advanced in-body image stabilization, it should be noted that each of your recording settings will get a 1.1x crop.
While you likely won’t use it very often, the Sony a7S III does feature really good audio with its built-in speakers.
Sony a7S III Price
Given the wildly impressive video specs on the Sony a7S III, it makes sense that the Sony a7S III price isn’t within reach for most.
The Sony a7S III costs $3,500 if you’re planning on purchasing it brand new.
Now, since $3,500 is a ton of money to spend on a camera, even one as impressive as the Sony a7S III, I recommend purchasing this camera used to save some money. This way you can invest any cash you save in some new glass.
While you can mess around with websites like Ebay or Craigslist, after a few years of doing this myself I have realized that it is always safer and cheaper to strictly work with reputable used camera retailers. Not only are websites like Ebay and Craigslist crawling with scams, but they are also crawling with people who are only there to waste your time. When you’re investing this much money in a camera, it makes the most sense to work directly with someone who actually knows what they’re talking about.
Thankfully, we have just the used camera site for you: MPB. MPB currently has used Sony A7S III bodies for sale starting at $1,609. That’s right. You can save $2,000 simply by buying a camera that has been used for a few months.
MPB also has a Sony a7S III that is in like new condition for $1,689.
You can then turn around and spend that $2,000 you saved on new lenses that you can use alongside your new camera.
We have done a full review of MPB because we were so impressed with their level of customer service and knowledge. You can read that in the learn more link below.