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Sony Alpha a7S III Full-Frame Mirrorless Camera Body Black | Exmor R BSI CMOS Sensor
| Compatible Mountings | Sony E |
| Aspect Ratio | 16:9, 3:2, 4:3 |
| Photo Sensor Technology | CMOS |
| Supported File Format | HEIF, JPEG, Raw |
| Image Stabilization | Sensor-shift |
| Maximum Focal Length | 24 millimeters |
| Optical Zoom | 1 |
| Maximum Aperture | 4 millimeters |
| Expanded ISO Minimum | 40 |
| Metering Description | Average, Center-Weighted Average, Highlight Weighted, Multiple, Spot |
About this item
- 12.1MP1 Exmor R sensor, optimized for 4K, sensitivity and speed.Bluetooth : version 5.0
- New BIONZ XR processing engine delivers 8x more processing power2
- Low noise images with ISO up to 409,6003 and 15 plus stop dynamic range4
- Up to 4K 120p5 10-bit 4:2:2 and full pixel readout in all rec. modes
- Up to 4K 120p5 in XAVC S (AVC), XAVC HS (HEVC) and XAVC S-I (All-I)
- Video capture resolution: 4K UHD 2160p. Operating Temperature- 32 - 104 degrees F / 0 - 40 degrees C
- First time ever in an Alpha camera - S-Cinetone picture profile for cinematic look tone and color in video
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Product Description
Introducing the Alpha 7S III – a new milestone in sensitivity, speed and image supremacy. Featuring an all-new 12.1MP backside illuminated full-frame sensor with twice the readout speed for ultra-clean low-light images up to ISO 409,600, 15+ stops dynamic range and 3x reduction in rolling shutter, plus Sony’s acclaimed fast hybrid autofocus with 759 phase detection AF points. A new BIONZ XR processing engine deliver 8x more processing power for up to 120p 4K 10-bit 4:2:2 and full pixel readout in all recording modes.
From the manufacturer
Sony α7SIII Full-frame Mirrorless Camera
Imagination in Motion
Taking the S series to a whole new level of full-frame movie expression, spectacular new speed combines with supreme sensitivity and ultra-low noise to put previously impossible 4K movie shoots on the menu, with high dynamic range, breathtaking focusing, and extra-strong image stabilization.
For visual trailblazers
With extreme full-frame movie performance including high sensitivity (expanded ISO up to 409600), 15-stop wide dynamic range, 4K 120p1, fast and dependable autofocusing, and extra-strong image stabilization, the α7S III again raises the bar for movie makers
Feature Gallery
-
Fast Hybrid AF for accuracy and tenacity
AF uses intelligent tracking and on-sensor phase-detection covering most of the frame. Every bit of supremely accurate AF performance is extracted in combination with high-quality E-mount lenses.
-
Still-image quality through new sensor and engine
The newly-developed image sensor and image processing engine deliver improvements in color reproduction, particularly of skin tones, and texture depiction in still images.
-
Highly-sensitive AF for low-light focusing
AF algorithm advances have allowed the α7S III to achieve autofocus in lighting conditions as dim as EV-615, where subjects are barely even visible with the naked eye.
-
10-bit 4:2:2 recording
Record right on the camera with the amazing richness of 10-bit depth and 4:2:2 color sampling, for far greater flexibility in image grading, post-processing and compositing.
-
New HEIF format and HLG image capture modes16
HEIF image file format is supported, offering better image quality and greater compression efficiency than JPEG, plus 10-bit color. High Dynamic Range still images can also be captured in HLG mode.
-
Powerful focus control for solo shooters
With AF Transition Speed selectable over 7 levels, and AF Subject Shift Sensitivity over 5 levels, you can better convey your creative intentions when switching subjects or, for example, rack focusing
Features
Two CFexpress media slots
Both card slots support both CFexpress Type A cards and SDXC UHS-II cards. Parallel and Relay recording are also available.
Advanced operability
Menu structure has been redesigned to reflect feedback from pro photographers & videographers. Camera is more responsive, settings are more intuitive.
Vari-angle LCD monitor
The variable-angle 1.44 million-dot17 3.0-type touch screen features side-open design, for flexible positioning and improved visibility when mounting.
Unique heat dissipation
A unique Σ shaped graphite heatsink is built into the image-stabilization unit. This dissipates heat 5x more effectively12 for extended recording time
Sony CFexpress Type A memory cards
CEAG80T (80GB) & CEAG160T (160GB) type A cards are ideally suited for high-speed continuous shooting of more than 1,000 uncompressed RAW still images, as well as 4K 120p movie recording at high bit rates with the Slow & Quick Motion function when paired with cameras like the A7S III. Sold separately
Footnotes
1 With 10% image crop; 12 Sony test conditions ;15 In AF-S mode, at F2.0, ISO 100.
16 A corresponding environment is required for playback of still images recorded in HEIF.
17 Approximate; 19 50-mm lens, infinity, -1m⁻¹ dioptre.
Features and specifications are subject to change without notice.
Product information
| Compatible Mountings | Sony E |
|---|---|
| Aspect Ratio | 16:9, 3:2, 4:3 |
| Sensor Type | CMOS |
| File Format | HEIF, JPEG, Raw |
| Image stabilization | Sensor-shift |
| Maximum Aperture | 4 millimeters |
| Expanded ISO Minimum | 40 |
| Photo Sensor Resolution | 12 mp |
| Photo Sensor Size | Full Frame (35mm) |
| Maximum Shutter Speed | 1/8000 seconds |
| Minimum Shutter Speed | 1/8000 seconds |
| Exposure Control | Manual |
| Form Factor | Mirrorless |
| Effective Still Resolution | 12.1 |
| Special Feature | BIONZ XR Image Processor; 759-Point Fast Hybrid AF; 5-Axis SteadyShot INSIDE Image Stabilization |
| Color | Black |
| Screen Size | 3 inches |
| Shooting Modes | Auto, Manual, Programmed AE, Aperture priority, Shutter-speed priority, Slow /amp; Quick Motion |
| Item Weight | 612 g |
| Video Resolution | 4K UHD 2160p |
| Viewfinder | Electronic |
| Flash Modes | Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync |
| Camera Flash | No Flash |
| Skill Level | Professional |
| Specific Uses For Product | Photography, Videography |
| Compatible Devices | Smartphone |
| Continuous Shooting | 10 frames_per_second |
| Aperture modes | Manual, Aperture priority, Shutter-speed priority |
| Viewfinder Magnification | 0.9x |
| Flash Sync Speed | 1/250 Second |
| Connectivity Technology | Wi-Fi |
|---|---|
| Wireless Technology | Bluetooth, Wi-Fi |
| Video Output | HDMI |
| Total USB Ports | 1 |
| Total USB 2.0 Ports | 1 |
| Hardware Interface | USB Type C |
| HDMI Type | Type A Standard HDMI |
| Screen Size | 3 inches |
|---|---|
| Display Type | LCD |
| Dots Per Screen | 1,440,000 Dots |
| Display Fixture Type | Articulating |
| Display Maximum Resolution | 4240 x 2832 |
| Display Resolution Maximum | 4240 x 2832 |
| Flash Memory Type | Dual Slot: CFexpress Type A / SD (UHS-II) |
|---|---|
| Memory Slots Available | 2 |
| Recording Capacity | 24 minutes |
| Write Speed | Up to 10 fps |
| Flash Memory Speed Class | 70 |
| Flash Memory UHS Speed Class | UHS Speed Class 3 (U3) |
| Flash Memory Video Speed Class | 300 |
| Flash Memory Bus Interface Type | PCIe |
| Compatible Flash Memory Type | CFexpress Type A, SDXC |
Warranty & Support
Feedback
| Aspect Ratio | 16:9, 3:2, 4:3 |
|---|---|
| File Format | HEIF, JPEG, Raw |
| Effective Still Resolution | 12.1 |
| JPEG Quality Level | Fine |
| Supported Image Format | JPEG, RAW |
| Bit Depth | 14 Bit |
| Total Still Resolution | 12.1 mp |
| Maximum Image Size | 3464 pixels |
| Maximum Focal Length | 24 millimeters |
|---|---|
| Optical Zoom | 1 |
| Lens Type | Zoom |
| Zoom | Optical Zoom |
| Camera Lens | 10 |
| Minimum Focal Length | 28 centimeters |
| Real Angle Of View | 0.53 radians |
| Focal Length Description | 12 to 24mm |
| Number of Diaphragm Blades | 9 |
| Metering Methods | Average, Center-Weighted Average, Highlight Weighted, Multiple, Spot |
|---|---|
| Exposure Control | Manual |
| White Balance Settings | Auto, Cloudy, Color Temperature, Custom, Daylight, Fluorescent, Incandescent, Shade, Underwater |
| Self Timer | 10 seconds, 2 seconds, 5 seconds |
| Crop Mode | Full-Frame |
| Brand | Sony |
|---|---|
| Model Name | ILCE7SM3/B |
| Built-In Media | Camera Body & Accessories |
| Model Number | ILCE7SM3/B |
| Model Series | a7S III |
| Series Number | 7 |
| Global Trade Identification Number | 00027242920569 |
| Generation | III |
| UPC | 027242920569 |
| Unit Count | 1 Count |
| Manufacturer | Sony |
| Manufacturer Part Number | ILCE7SM3/BQ |
| Warranty Description | 1-year limited manufacturer’s |
| Best Sellers Rank |
|
| ASIN | B08DP4NKGN |
| Customer Reviews |
4.8 out of 5 stars |
| Shooting Modes | Auto, Manual, Programmed AE, Aperture priority, Shutter-speed priority, Slow /amp; Quick Motion |
|---|---|
| Image Capture Type | Stills & Video |
| Auto Focus Technology | Contrast Detection, Phase Detection |
|---|---|
| Focus Features | Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S) |
| Autofocus Points | 759 |
| Focus Type | manual-and-auto |
| Focus Mode | Continuous-Servo AF (AF-C), Direct Manual Focus (DMF), Manual Focus (MF), Single-Servo AF (AF-S) |
Product guides and documents
Safety and product resources
Safety documents
What's in the box
Top Brand: Sony
Customer reviews
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Reviews with images
very happy with my cheaper deal from amazon
Top reviews from the United States
- 5 out of 5 stars
BEST HYBRID MIRRORLESS for all kinds of photo and video work… Nothing Compares IMO
Reviewed in the United States on June 17, 2024Versatile, Best in-its-class hybrid camera. High Quality, Sharp Footage, Auto Focus is amazing AF (pun intended), Low light performance of the Gods, Anazing viewfinder which i use every single day to pixel peep in broad sunlight- and with S-Log3 (PP8), a dream to color grade in post. I enjoy using this camera so much for all my client work, it has become an extension of myself and my creativity. This kind of camera makes you more creative just by the way it handles everything so well- you worry less about the technical side. I’ve had many cameras, and have sold most of them in favor of this one. I will get another soon as a B-cam. The more you learn to use it, and utilize its features to the max, the more you’ll fall in love with it. To any creator seeking to go pro, or just take their craft to the next level, this is the one stop shop for mostly everything you’ll need. Until you’ve got $$$ for a crazy cinema camera like the fx6, an ursa mini, or an ARRI, get this one first. It has what every one-man/woman-band needs to do their work with confidence. If you’re already a pro, you will love it, and it will make you a lot of money if you know how to use it. 😎
15 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
MaeWood Photography’s Professional A7siii Review
Reviewed in the United States on December 17, 2020There is a likely reason why they are heavily bragging about the A7siii, and that is all of the other things that come with this impressive camera. I imagine that the first thing most of us will notice is the ergonomics and build quality. Both of which are outstanding. Sony users will feel right at home and with some improvements to quickly adjust your ISO, Aperture, and shutter speed.
The menu system is improved and nicely customizable to put whatever you need to adjust the most, right onto the first page. Let’s not fool ourselves; none of the cameras out there have really figured out how to do menus that make us happy. The A7siii has not figured out the magic formula, but it is getting close. I am yet to find a complaint, but I am holding back praise.
Once you start shooting, only the most curmudgeon photographer could not express satisfaction at the industry-leading autofocus. Whether using human eye focus, traditional focuses, or the even further improved animal eye focus, the latest Sony technology is an impressive bit of technological magic. The lock on subject settings allows me to track the bride coming down the aisle as she passes the guest and others who jump into the frame. The A7siii sticks with her and does not jump to the new and closer object. Sure this is rather easy during staged shoots on manual, but for the unpredictable one take video situations… highly advantageous.
Some other standout advantageous aspects are in the memory cards, batteries, heat management, and 10 bit 4:2:2. Memory cards are getting expensive! Many new cameras only allow expensive memory options. You do need a certified v90 SD card ($100 or so for 128GB) for the 120fps at the highest settings, but 60fps with excellent 4k and 10-bit quality has been working flawlessly with a bargain-basement v60 SD card. That means for most applications, the A7siii is the best option for keeping storage cost manageable and reasonable.
Battery Life has been unremarkable, but this is an improvement because more technology and demand are being placed on the camera. Therefore the battery life is lasting as long as typical but getting more out of each drop and with no heat issues. Yes, no heat issues on the A7siii. Personally, most of my video shooting is highspeed and in the desert of Phoenix. August weddings are in brutal heat. The A7siii has no care or concern. One heat warning has been observed, but that was it, just a warning, and this is in the hottest of conditions faced but 99.99% of videographers.
The only area where the A7siii does not shine is in the same area all of these mirrorless cameras fall short (in comparison to DSLRs), photos. Maybe it is me, but DSLRs take better quality pictures. Though the DSLR pictures are much harder to obtain because of focus and shooting speeds when you nail a DSLR photo is better than a mirrorless. Still, the A7siii is nearly guaranteed to capture multiple in-focus action shots.
The A7siii will be my primary camera for the foreseeable future which is likely to be for many years into the future.
64 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
I bought the 2199.99 one. It surprisingly was in fantastic condition.
Reviewed in the United States on March 7, 2025I purchased a used Sony A7S III, and I have to say, it still holds up as an incredible camera. The low-light performance is top-tier, the autofocus is fast and reliable, and the 4K 120fps recording is a game-changer for video work. Even though it was pre-owned, it arrived in excellent condition, and everything functions perfectly.
If you're into video or need a camera that excels in low-light situations, this is a solid investment—even used. Highly recommend!
5 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Best Camera You'll Ever Own
Reviewed in the United States on July 25, 2023There's nothing to dislike, except maybe the cost of the memory card that you'll need to buy for 4k Video... but once you see the video quality you'll forget you spent all that hard earned money.
Image quality is out of this world, video quality is the closest I've ever come to broadcast grade and to be honest, I would even say it's just as good. With the right lens you'll be capturing amazing photos in the sun or in low light. It works super well for indoor and outdoor sports, portraits etc.
Sony's included software is terrible compared to what you get for free from Canon so you'll need something to go over your images with, Capture One works very well for me. The video format may come out incompatible with your video editor, so you'll want to download an app like HandBrake to convert the files. I use PowerDirector 21 to edit video (won't pay Adobe a subscription).
19 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
very happy with my cheaper deal from amazon
Reviewed in the United States on June 19, 2026Received a used Sony A7S III exactly as described. The camera looks almost brand new with very little to no visible signs of use. Everything works perfectly, shutter count is low, and the condition exceeded my expectations. The seller was honest about the item and packaged it very well. Very satisfied with this purchase and would definitely buy from this seller again. Highly recommended!

5 out of 5 starsvery happy with my cheaper deal from amazon
Reviewed in the United States on June 19, 2026Received a used Sony A7S III exactly as described. The camera looks almost brand new with very little to no visible signs of use. Everything works perfectly, shutter count is low, and the condition exceeded my expectations. The seller was honest about the item and packaged it very well. Very satisfied with this purchase and would definitely buy from this seller again. Highly recommended!
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Amazing for real estate videos!
Reviewed in the United States on August 20, 2022I bought the aS7 III this week mainly for the 4K 60fps capability, which is great. But the overall image quality improvement over my A7 III is unbelievable! I work in ambient light and even here in sunny Florida, house interiors can be dark in the middle of the day, even with lights on. I shot a test video in my own home at midday and the improvement in color, brightness and detail was amazing. Really no need to use noise reduction on darker clips, and no noise even at higher ISOs. But what blew me away most was I shot in 4K-60 but exported it in 1080p and didn't realize it. I thought I was looking at 4K. Just stunning results. Best photographic equipment buy EVER!
27 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Switched from Canon to this camera and absolutely love it!
Reviewed in the United States on August 27, 2021I am a true hybrid shooter. Many of the events I shoot go back and forth between video and stills in an instant. Though I loved my Canon gear I always wondered if something else might be better. Well, I took a chance and bought the A7Siii and the GM 24-105 f4, and I am not sorry one bit. For photos, everyone complains it only has 12 mp, but truthfully I haven’t had any issues. I love the stills I get out of this camera. No I can’t crop much in post or print billboards, good thing I don’t do either in my work. And this camera blows my Canon out of the water when it comes to video. I went from cropped 4K and 60fps maxed at 1080p, to amazing 4.2.2 10 bit full frame 4K up to 120fps. So if your like me and looking for an amazing hybrid shooter camera that doesn’t overheat (I was shooting in 100+ degree weather in Florida and never had an issue), this is the camera for you.
20 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Wonderful camera for professional use
Reviewed in the United States on January 18, 2025This camera is worth every cent, excellent build and quality. I've been using it for the last several months and haven't had any issues, very happy with the purchase.
2 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Top reviews from other countries
OMAR5 out of 5 starsExcelente servicio 👌🏼
Reviewed in Mexico on June 13, 2023Llegó muy bien empacada, antes del día previsto y nueva.
Estoy encantado, muchas gracias.
5 out of 5 starsExcelente servicio 👌🏼
Reviewed in Mexico on June 13, 2023Llegó muy bien empacada, antes del día previsto y nueva.
Estoy encantado, muchas gracias.
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Roger Alfred5 out of 5 starsFantasic camera for low light videos
Reviewed in Canada on July 25, 2022If you're a real estate videographer/photographer, its a no brainer. This is first and foremost a video camera and photos are secondary. Keep that in mind when deciding to purchase.
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Kevin Chaves4 out of 5 starsExpensive, but the video quality is incredible!
Reviewed in Canada on May 28, 2021I used to shoot Canon for so long, but after trying the A7Si I was hooked. Then went to the A7Sii, and now the A7Siii. Definitely a big Sony fan now. This camera paired with the Sony 24-105 and the Weebill S and you have a really great setup!
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