The Sony Alpha a9 is a premium, full-frame mirrorless camera that offers extremely fast performance. Key features include:
24.2MP full-frame RS stacked CMOS sensor
693-point phase-detection autofocus system
Five-Axis SteadyShot INSIDE image stabilization
Uncompressed 4:2:2 UHD 4K video output
What’s New? The Sony Alpha a9’s extremely fast performance makes it ideal for sports shooters. It boasts several improvements over the a7-series cameras, most notably continuous shooting with full-time live view, an expanded ISO range, an updated in-body image-stabilization system, faster autofocus performance, UHD 4K video capture, and streamlined ergonomics and controls.
24.2MP Full-Frame RS Stacked CMOS Sensor. This fast sensor gives you quick readout speeds, and lets you record uncompressed 14-bit Raw files for accurate color reproduction and post-production flexibility. Its back-illuminated design keeps image quality clean in a wide range of lighting conditions.
BIONZ X Image Processor. This processor works with the CMOS sensor to keep up with fast-paced shooting applications. You can shoot up to 20 fps for up to 362 consecutive JPEGs or 241 Raw frames, while the quick 1/32,000 sec. top electronic shutter speed lets you capture fast-moving subjects and work in bright light. The shutter and electronic viewfinder make blackout-free monitoring possible.
693-Point Phase-Detection Autofocus. The updated 693-point phase-detection/25-point contrast-detection autofocus system covers 93% of the image area and gives you faster, more precise autofocusing than the a7 series. There’s the option of flexible spot focus, which uses neighboring focus points to stay focused on fast-moving subjects even if the original point loses focus. The Eye AF feature lets you base focusing on a familiar subject’s eyes, making this camera great for portraiture, while Focus Magnification emphasizes minute details. At long last, the a9 sees the addition of an AF Point joystick and dedicated AF On button.
Five-Axis SteadyShot INSIDE Image Stabilization. The updated SteadyShot INSIDE image-stabilization system offers up to five stops of correction on to any lens mounted. This system compensates for five types of camera shake, including angular shake (pitch and yaw), shift shake (X and Y axes), and rotational shake (roll). All five stabilization axes are constantly engaged, even when using third-party lenses, adapters, or lenses with their own built-in image stabilization.
High-Res EVF and Tilting Rear Touchscreen LCD. The built-in 3.686M-dot quad-VGA OLED Tru-Finder gives you a clear and bright live preview of what the sensor sees with 100% frame coverage. You can also use the tilting 3.0" 1.44M-dot rear touchscreen LCD for image composition and review when shooting at arm’s length. You read that right, Sony touchscreen!
UHD 4K Video Capture. The a9 can capture UHD 4K video in multiple frame rates up to 30 fps, which is oversampled 2.4-fold from 6K footage to ensure that there’s no pixel-binning or line skipping. It can also capture Full HD 1080p at up to 120 fps. Both 4K and Full HD resolutions use 100 Mbps XAVC S format in an MP4 wrapper with 4:2:0 sampling. In addition to these high-resolution internal-recording options, the a9 offers uncompressed 4:2:2 video output via an HDMI connection. You can store a frame grab from a 4K recording as an 8MP still.
Improved Body Design. The a9’s durable magnesium-alloy body is similar to the a7 cameras’, but it feels more substantial and features improved dust and moisture sealing for shooting in less-than-ideal conditions. This camera features a slightly deeper grip than the a7s, which makes it easier to use with larger, heavier lenses. You also get reconfigured, more direct controls for ease of use, and dual SD card slots for flexible file-storage options. The lower slot supports UHS-II cards, and you can configure the slots for in-camera backup, overflow saving, or segregated Raw/JPEG recording.
Other Notable Features. There’s an NTSC/PAL-switchable Slow and Quick Motion mode, an enhanced Zebra function to help you monitor exposure values in high-contrast scenes, a Time Code feature that makes editing easier, hot-shoe and PC-terminal external-flash connections, and built-in Wi-Fi and Bluetooth capabilities for wireless image sharing and camera control. And rounding all this out is the new, higher-capacity NP-FZ100 Battery that’s rated for about 650 shots per charge.
If you haven’t at least tried out the Sony a9, you’re missing out. It might be overkill for some types of work, but this camera is capable of just about anything. While it’s built to compete with ...
If you haven’t at least tried out the Sony a9, you’re missing out. It might be overkill for some types of work, but this camera is capable of just about anything. While it’s built to compete with flagship action/sports cameras like the Canon 1DX Mark II and the Nikon D5, I have yet to find anything it’s not good for, and I’ve found it to be superior to the competition in quite a few ways. It’s smaller, lighter, faster, and cheaper, but that statement alone really doesn’t do it justice.
Using the a9 is like flying a spaceship. Shooting silently at 20 fps with full AF (693 Phase Detection AF points), zero buffer blackout, all on a 24MP full frame sensor is really an out-of-this-world experience. The dual memory slots are a nice improvement over the a7 cameras—just be sure and carry enough memory…20 fps is pretty addictive. The a9 handles low light exceptionally well, making tracking and eye-focus detection a breeze in any condition. The OLED viewfinder is fantastic as you adjust exposure on the go and the addition of the thumb joystick on the rear makes adjusting focus points while shooting really simple. Sony also added layercake dials to control Drive and Focus Modes, so that it’s much simpler to make adjustments while working. The rear flip screen returns to this model with the added bonus of touch sensitivity, making the a9 even more versatile. The silent electronic shutter is really impressive (and actually silent). There’s no need to worry about frightening wildlife or disturbing solemn occasions with a loud clacking shutter; 20 fps goes unnoticed on the a9 when the electronic shutter is engaged (and it’s still a lot quieter than the competition when the mechanical shutter is used as well).
Sports and action/wildlife photographers might drool over the specs, but wedding photographers should take notice as well. “Spray and Pray” is a thing of the past, because now you can spray and just pick your favorites.
1/8" Headphone, 1/8" Microphone, HDMI D (Micro), Micro-USB, X-Sync Socket
Up to 20 fps at 24.2 MP for up to 362 frames in JPEG format; Up to 20 fps at 24.2 MP for up to 241 frames in Raw format; Up to 10 fps at 24.2 MP; Up to 5 fps at 24.2 MP; Up to 2.5 fps at 24.2 MP
|Dedicated Flash System||
5″ × 3.8″ × 2.5″
3" Rear Touchscreen Tilting LCD (1,440,000)
Aperture Priority, Auto, Manual, Program, Shutter Priority
|External Flash Connection||
Hot Shoe, PC Terminal
Still Images: JPEG, RAW; Movies: AVCHD Ver. 2.0, MP4, MPEG-4 AVC/H.264, XAVC S; Audio: AAC LC, AC3, Dolby Digital 2ch, Linear PCM
-3 EV to +3 EV (in 1/3 or 1/2 EV steps)
Auto and manual
Auto: 100-51,200; Extended Mode: 50-204,800
24 MP: 6000 × 4000
|Maximum Sync Speed||
Center-Weighted Average Metering, Multi-Zone Metering, Spot Metering, Highlight Weighted
Actual: 28.3MP; Effective: 24.2MP
(1) NP-FZ100 Rechargeable Lithium-Ion Battery Pack, 7.2 VDC, 2280 mAh
Type: Mechanical, Speed: 30 – 1/8000 seconds in Bulb Mode; Type: Electronic, Speed: 30 – 1/32000 seconds in Bulb Mode
3840 × 2160p at 24, 25, 30 fps (100 Mbps XAVC S); 3840 × 2160p at 24, 25, 30 fps (60 Mbps XAVC S); 1920 × 1080p at 100, 120 fps (100 Mbps XAVC S); 1920 × 1080p at 100, 120 fps (60 Mbps XAVC S); 1920 × 1080p at 24, 25, 30, 50, 60 fps (50 Mbps XAVC S); 1920 × 1080p at 50, 60 fps (28 Mbps AVCHD); 1920 × 1080i at 50, 60 fps (24 Mbps AVCHD); 1920 × 1080i at 50, 60 fps (17 Mbps AVCHD); 1920 × 1080p at 24, 25 fps (24 Mbps AVCHD); 1920 × 1080p at 24, 25 fps (17 Mbps AVCHD); 1920 × 1080p at 50, 60 fps (28 Mbps MP4); 1920 × 1080p at 25, 30 fps (16 Mbps MP4); 1280 × 720p at 25, 30 fps (6 Mbps MP4)
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