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.
Beyond just updates to the imaging system, the a7 III's body design has also been revised to include a rear 3.0" 922k-dot touchscreen LCD, which has a tilting design to better support working from high and low angles. A 2.36m-dot Tru-Finder OLED EVF is also featured for bright and clear eye-level monitoring. For greater shooting flexibility, dual SD memory card slots are now featured, and a larger NP-FZ100 battery is also employed to achieve up to approximately 710 shots per charge. Suiting the camera's use in trying conditions, the magnesium-alloy chassis and weather-sealing also render the a7 III dust- and moisture-resistant.
24.2MP Exmor R BSI CMOS Sensor and BIONZ X Image Processor
Featuring a back-illuminated design, the full-frame 24.2-megapixel Exmor R CMOS sensor works with the BIONZ X image processor to offer high-resolution stills and video while minimizing noise and improving speed. This sensor structure works with a gapless on-chip lens design and an anti-reflection coating to improve light collection and enhance detail. Also, the copper wiring layer dramatically improves data transmission speed for creating 14-bit, high-resolution stills with a native sensitivity range from ISO 100-51200, which can be further expanded to ISO 50-204800. Also, it enables internal UHD 4K video recording with a wide dynamic range using the full width of the full-frame sensor. The BIONZ X processor also works in conjunction with a high-speed front-end LSI to realize faster processing times along with the ability to capture an impressive 15-stop dynamic range at low sensitivity values.
The sensor and processor combination also avails fast continuous shooting at up to 10 fps at full resolution, for up to 177 consecutive frames, and with full-time AF/AE when working with either a mechanical shutter or an electronic shutter. If shooting in live view mode, a continuous shooting rate of up to 8 fps is also possible.
Fast Hybrid AF System
An evolved 4D FOCUS system now employs a combination of 693 phase-detection points, which cover approximately 93% of the frame, along with 425 contrast-detection areas for reliable and quick autofocus and subject tracking performance. This Fast Hybrid AF System now achieves twice the focusing speed and more reliable tracking compared to previous a7 models, as well as improved low-light focusing. The use of phase-detection points also enables the use of A-mount lenses via the optional LA-EA3 or LA-EA1 lens mount adapters with full continuous AF/AE tracking compatibility.
The apt focus system also lends itself to a variety of focusing functions for refined accuracy, including Lock-on AF, which maintains focus on moving subjects throughout the use of a configurable frame that is set over the desired moving subject, and Expand Flexible Spot, which employs neighboring focus points to retain focus on moving subjects even if the originally selected point loses focus. Additionally, Eye AF can be used to base focus on recognized subjects' eyes for portraits and is available in both AF-S and AF-C modes. Autofocus can also be used in conjunction with the Focus Magnifier function for critical focus when homing in on minute subject details. The rear touchscreen can also be used for Touch Focus control, and a Touchpad Focus Control mode lets you use the rear screen intuitively while keeping your eye to the viewfinder.
Sony Alpha a7 III Mirrorless Digital Camera (Body Only)
Sony A7 III specs
Imaging Lens Mount Sony E-Mount Camera Format Full-Frame Pixels Actual: 25.3 Megapixel
Effective: 24.2 Megapixel
Max Resolution 24 MP: 6000 x 4000 Aspect Ratio 3:2, 16:9 Sensor Type / Size CMOS, 35.6 x 23.8 mm File Formats Still Images: JPEG, RAW
Movies: AVCHD 2.0, XAVC S
Audio: AC3, Dolby Digital 2ch, Linear PCM (Stereo)
Bit Depth 14-Bit Dust Reduction System Yes Memory Card Type SD
Memory Stick Pro Duo
Memory Stick PRO HG-Duo
Image Stabilization Sensor-Shift, 5-Way AV Recording Video Recording Yes, NTSC/PAL Video Format 3840 x 2160p at 23.98/25/29.97 fps (100 Mb/s XAVC S via H.264)
3840 x 2160p at 23.98/25/29.97 fps (60 Mb/s XAVC S via H.264)
1920 x 1080p at 100/120 fps (100 Mb/s XAVC S via H.264)
1920 x 1080p at 100/120 fps (60 Mb/s XAVC S via H.264)
1920 x 1080p at 23.98/25/29.97/50/59.94 fps (50 Mb/s XAVC S via H.264)
1920 x 1080p at 50/59.94 fps (25 Mb/s XAVC S via H.264)
1920 x 1080p at 25/29.97 fps (16 Mb/s XAVC S via H.264)
1920 x 1080i at 50/59.94 fps (24 Mb/s AVCHD via H.264)
1920 x 1080i at 50/59.94 fps (17 Mb/s AVCHD via H.264)
Aspect Ratio 16:9 Video Clip Length Up to 29 Min Audio Recording Built-In Mic: With Video (Stereo)
Optional External Mic: With Video (Stereo)
Focus Control Focus Type Auto & Manual Focus Focus Mode Automatic (A), Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-servo AF (S) Autofocus Points Phase Detection: 693
Contrast Detection: 425
Viewfinder/Display Viewfinder Type Electronic Viewfinder Size 0.5" Viewfinder Pixel Count 2,359,000 Viewfinder Eye Point 23.00 mm Viewfinder Coverage 100% Viewfinder Magnification Approx. 0.78x Diopter Adjustment -4 to +3 m Display Screen 3" Rear Touchscreen Tilting LCD (921,600) Screen Coverage 100% Exposure Control ISO Sensitivity Auto, 100-51200 (Extended Mode: 50-204800) Shutter 30 - 1/8000 Second , Bulb Mode Remote Control RM-VPR1, VCT-XPR10, VCT-VPR1, RM-SPR1, RMT-VP1K (Optional) Metering Method Center-Weighted Average Metering, Multi-Zone Metering, Spot Metering, Highlight Weighted Exposure Modes Modes: Aperture Priority, Auto, Manual, Movie, Program, Shutter Priority
Metering Range: EV -3.0 - EV 20.0
Compensation: -5 EV to +5 EV (in 1/3 or 1/2 EV Steps)
White Balance Modes Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater Buffer/Continuous Shooting Up to 10 fps at 24.2 MP for up to 89 Frames in Raw Format
Up to 10 fps at 24.2 MP for up to 177 Frames in JPEG Format
Up to 8 fps at 24.2 MP
Up to 6 fps at 24.2 MP
Up to 3 fps at 24.2 MP
Flash Flash Modes Auto
Built-in Flash No Max Sync Speed 1 / 250 Second Flash Compensation -3 EV to +3 EV (in 1/3 or 1/2 EV steps) Dedicated Flash System TTL External Flash Connection Hot Shoe Performance Self Timer 10 Seconds, 5 Seconds, 2 Seconds Connectivity 1/8" Headphone, 1/8" Microphone, HDMI D (Micro), USB 2.0 Micro-B, USB 3.0, USB Type-C Wi-Fi Capable Yes Power Battery 1 x NP-FZ100 Rechargeable Lithium-Ion Battery Pack, 7.2 VDC, 2280 mAh Operating/Storage Temperature Operating
32 to 104°F (0 to 40°C)
Physical Dimensions (W x H x D) 5.0 x 3.8 x 2.9" / 126.9 x 95.6 x 73.7 mm Weight 1.43 lb / 650 g Packaging Info Package Weight 2.5 lb Box Dimensions (LxWxH) 8.1 x 6.0 x 5.4"