Distinguished by its updated sensor design, the Alpha a7 III Mirrorless Digital Camera from Sony is a well-rounded camera suitable for both photo and video applications in a variety of working situations. Refined for improved speed and low-light performance, the full-frame 24.2MP Exmor R BSI CMOS sensor and BIONZ X image processor pair to realize an impressive 10 fps continuous shooting rate and improved autofocus performance for faster, more reliable subject tracking along with wide frame coverage. This updated Fast Hybrid AF System employs a combination of 693 phase-detection points and 425 contrast-detection areas for quicker acquirement of focus in a variety of lighting conditions, and also maintains focus on subjects more effectively. In addition to speed and AF, the processing improvements also help to realize greater image clarity and reduced noise throughout the sensitivity range from ISO 100-51200, which can further be expanded to ISO 50-204800. Video recording capabilities have also been extended for enhanced quality when recording UHD 4K video with the full width of the full-frame sensor to minimize moiré and aliasing. Additionally, benefitting both stills and video operation, the a7 III utilizes a 5-axis SteadyShot INSIDE sensor-shift image stabilization, which is now effective to minimize the appearance of camera shake by up to 5 stops.
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Specifications
24.2MP44 35mm full-frame CMOS sensor with back-illuminated design
Sensitivity range up to ISO 51200 (expandable to ISO 50-204800 for stills)
Fast Hybrid AF with 693 phase-detection and 425 contrast-detection AF points
High-speed continuous shooting of up to 10 fps45 with AF/AE tracking
4K HDR46 47 movie recording capability
Lens Compatibility
Sony E-mount lenses
Sensor Type
35mm full frame (35.6×23.8mm), Exmor R CMOS sensor
Number Of Pixels (Effective)
Approx. 24.2 megapixels
ISO Sensitivity
Still images: ISO 100-51200 (ISO numbers up from ISO 50 to ISO 204800 can be set as expanded ISO range.), AUTO (ISO 100-12800, selectable lower limit and upper limit), Movies: ISO 100-51200 equivalent(ISO numbers up ISO 102400 can be set as expanded ISO range.), AUTO (ISO 100-12800, selectable lower limit and upper limit)
Battery Life (Still Images)
Approx. 610 shots (Viewfinder) / approx. 710 shots (LCD monitor) (CIPA standard)43
Viewfinder Type
1.3 cm (0.5 type) electronic viewfinder (color), XGA OLED
Monitor Type
7.5cm (3.0-type) type TFT
Rechargeable Battery NP-FZ100, AC Adaptor AC-UUD12, Shoulder strap, Body cap, Accessory shoe cap, Eyepiece cup, Micro USB cable
1 Approximate number of effective pixels.
2 Up to 10 fps in continuous “Hi ” mode and up to 8 fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
3 Up to 10 fps in continuous “Hi ” mode and up to 8 fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
4 A Class 10 or higher SDHC/SDXC card is required for XAVC S format movie recording. UHS Speed Class 3 or higher card is required for 100 Mbps recording.
5 Approximate number of effective pixels.
6 Approximate number of effective pixels.
7 Compared to the α7 II. Sony test conditions.
8 Compared to the α7 II. Sony test conditions.
9 Sony test conditions.
10 Limited to 12 bits during compressed RAW continuous shooting, BULB exposure, or when Long Exposure NR is ON.
11 When uncompressed RAW is selected.
12 Compared to the α7 II in dim light. Sony test conditions.
13 ISO 100 equivalent, F2.0 lens, in the AF-S mode.
14 With SSM or SAM lenses only. With the LA-EA3 mount adapter. Focal-plane phase-detection AF not supported for movie recording. AF-C can only be used when the “Phase detection” AF system is selected, but focus is fixed at the first frame during continuous shooting in any mode other than “Continuous: Lo” (Hi , Hi, Mid).
15 With SSM or SAM lenses only. With the LA-EA3 mount adapter. Focal-plane phase-detection AF not supported for movie recording. AF-C can only be used when the “Phase detection” AF system is selected, but focus is fixed at the first frame during continuous shooting in any mode other than “Continuous: Lo” (Hi , Hi, Mid).
16 With SSM or SAM lenses only. With the LA-EA3 mount adapter. Eye AF not supported for movie recording. AF-C can only be used when the “Phase detection” AF system is selected, but focus is fixed at the first frame during continuous shooting in any mode other than “Continuous: Lo” (Hi , Hi, Mid).
17 Up to 10fps in continuous “Hi ” mode and up to 8fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
18 Up to 10fps in continuous “Hi ” mode and up to 8fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
19 Up to 10fps in continuous “Hi ” mode and up to 8fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
20 In continuous “Hi ” mode with UHS-II compatible SDXC memory card. Sony test conditions.
21 Not all menu parameters can be edited while data is being written to the memory card.
22 Only 100 Hz and 120 Hz flicker is detected. Continuous shooting speed may decrease. Anti-flicker shooting is not available during silent shooting, BULB exposure, or movie recording.
23 A Class 10 or higher SDHC/SDXC card is required for XAVC S format movie recording. UHS Speed Class 3 or higher card is required for 100 Mbps recording.
24 A Class 10 or higher SDHC/SDXC card is required for XAVC S format movie recording. UHS Speed Class 3 or higher card is required for 100 Mbps recording.
25 24p recording. Approx. 1.6 times for 30p recording.
26 Connect this product to an HDR (HLG) compatible Sony TV via a USB cable when displaying HDR (HLG) movies.
27 Sound not recorded. Class 10 or higher SDHC/SDXC card required.
28 CIPA standards. Pitch/yaw shake only. Planar T* FE 50 mm F1.4 ZA lens. Long exposure NR off.
29 CIPA standards. Pitch/yaw shake only. Planar T* FE 50 mm F1.4 ZA lens. Long exposure NR off.
30 Can be connected via Bluetooth with smartphones featuring (as of the date of release): • Android (Android 5.0 or later, Bluetooth 4.0 or later) • iOS (Bluetooth 4.0 or later)
31 A successor application of PlayMemories Mobile™. Existing PlayMemories Mobile users can use this by updating PlayMemories Mobile.
32 USB Type-C™ compatible USB cable not supplied.
33 When using LCD monitor. Up to approximately 610 photos when using electronic viewfinder.
34 Not guaranteed to be 100% dust and moisture proof.
35 A successor application of PlayMemories Mobile™. Existing PlayMemories Mobile users can use this by updating PlayMemories Mobile.
37 Final Cut Pro, iMovie, and Mac are trademarks of Apple Inc., registered in the U.S. and other countries. The Mac logo is a trademark of Apple Inc.
38 Please contact Phase One regarding all inquiries as to usage and support including functional compatibility of Capture One Express (for Sony) and Capture One Pro (for Sony).
39 Approximate number of effective pixels.
40 Up to 10fps in continuous “Hi ” mode and up to 8fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
41 A Class 10 or higher SDHC/SDXC card is required for XAVC S format movie recording. UHS Speed Class 3 or higher card is required for 100 Mbps recording.
42 Connect this product to an HDR (HLG) compatible Sony TV via a USB cable when displaying HDR (HLG) movies.
43 The LCD screen is turned on, shot once every 30 seconds, operate zoom alternately between W and T ends, flash strobe once every two times, turn power off and on once every ten times.
44 Approximate number of effective pixels.
45 Up to 10fps in continuous “Hi ” mode and up to 8fps in continuous “Hi” mode. Maximum fps will depend on camera settings.
46 A Class 10 or higher SDHC/SDXC card is required for XAVC S format movie recording. UHS Speed Class 3 or higher card is required for 100 Mbps recording.
47 Connect this product to an HDR (HLG) compatible Sony TV via a USB cable when displaying HDR (HLG) movies.
48 Phase-detection AF may not work with certain lenses or may require lens software update. See Sony support page for details.
49 With compatible Sony external flash.
50 With compatible external flash.
51 With compatible external flash.
52 Varies according to shooting conditions or memory card used.
53 Varies according to shooting conditions or memory card used.
54 Supports Micro USB compatible device.
55 Sony accessories for the Accessory Shoe can be attached.
56 The LCD screen is turned on, shot once every 30 seconds, operate zoom alternately between W and T ends, flash strobe once every two times, turn power off and on once every ten times.
57 Continuous movie recording is possible for approximately 29 minutes (limited by product specifications).
58 Indication recording time, which is defined by repeating the cycle: Power on, start recording, zoom , stand-by and power off.
59 Continuous movie recording is possible for approximately 29 minutes (limited by product specifications).
60 The total movie recording time. When the limit of the continuous movie recording time (29 minutes) is reached, let the camera continue movie recording by pressing the MOVIE button again. No other operation such as zoom are performed.
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