New full-frame stacked CMOS sensor with integral memory
a9 is the mirrorless camera that delivers next-generation high-speed performance far exceeding SLRs. Its equipped with the worlds first19 35mm stacked CMOS image sensor with integral memory for 20 times faster overall readout speed20. This 24.2MP21 image sensor achieves high sensitivity of up to ISO 204800 (extended)22 with the design of back-illuminated structure. (1) Pixel area (2) Integral memory (3) Hi-speed signal processing circuit (4) Image processing engine.
Innovative full-frame stacked CMOS sensor with integral memory
α9 liberates you from the limits of conventional SLRs that rely on mechanical systems. First to use high-speed stacked design, its 24.2-megapixel full-frame image sensor temporarily stores large-volume data in the integral memory for overall 20 times faster readout speed. The combination of CMOS sensor and enhanced BIONZ X image-processing engine brings you true digital freedom.
[ Stacked back-illuminated structure with integral memory ]
(1) Pixel area (2) Integral memory (3) Hi-speed signal processing circuit (4) Image processing engine
High-speed continuous shooting at up to 20fps
Groundbreaking full-frame Exmor RS CMOS sensor and BIONZ X processor team up for 20fps continuous shooting with AF/AE tracking. Stunning high-speed performance and ample buffer let you capture the decisive moment.
Non-mechanical electronic shutter eliminates blackout with typical SLR mirror action. An uninterrupted view of the subject is available even during shutter release, with 60fps live-view capability and minimal display lag in continuous shooting.
(A) Blackout-free shooting (B) Shooting with blackout
Note: This camera is equipped with electronic and mechanical shutters. The features described in this section are primarily related to electronic shutter operation.
AF/AE calculations up to 60 times/sec.
Light directly reaches the image sensor without mechanical interruption. An ingenious fusion of mirrorless construction and new speed-enhancing technologies provides AF/AE at the full-frame focal plane.
(1) AF/AE calculations (2) 60times/sec (3) 20 frames/sec.
Electronic shutter speeds up to 1/32000 sec.
Electronic shutter speeds up to 1/32000 sec. far surpass mechanical shutters for a new imaging expression. You can also maintain shallow depth of field without an ND filter, even under bright conditions.
(A mode 1/20000 sec. F8.0 ISO 1000)
No noise distraction
An anti-distortion electronic shutter allows silent shooting without mechanical mirror and shutter noise. It’s ideal for sports and subjects that demand quiet operation, greatly expanding camera versatility.
No unwanted vibration
During SLR shooting, mirror shock and shutter release shock cause subtle vibration. α9, however, has a vibration-free electronic shutter that can keep the camera stable, for razor-sharp images.
4D FOCUS: Stunningly wide coverage
693. Remarkable number of phase-detection AF points
The phase-detection points on the surface of an image sensor — 693 AF points — covers approximately 93% of the image area. High-precision performance assures your focus on subjects.
4D FOCUS: Fast AF speed
Fast Hybrid AF achieves rapid AF for full-frame photos
Capture fast-moving subjects with reliable rapid AF. The speed and accuracy of this Fast Hybrid AF System are further improved in combination with the enhanced BIONZ X image processing engine.
4D FOCUS: Steadfast tracking
Reliable subject tracking in motion
Uninterrupted AF and optimized AF algorithm dramatically enhance AF accuracy and tracking. Even during shutter release, constantly activated AF lets you continue tracking random subject motion.
A-mount lens AF support
Focal-plane phase-detection AF system with 693 AF points functions reliably. Enjoy up to 10fps continuous shooting with AF/AE tracking even when you use A-mount lenses with a mount adapter (LA-EA3).
New CMOS sensor for imaging excellence
High sensitivity, a back-illuminated configuration, gapless on-chip lens architecture, and other Sony innovations deliver stunning images in a wide range of photographic situations. Standard ISO range is ISO 100-51200, expandable to ISO 50-204800 with minimum noise.
Technology for high-quality images
Utilize high-quality imaging that unites all available image sensor technologies — including back-illuminated structure, gapless on-chip lens architecture.
[A] Conventional front-illuminated structure
[B] Stacked back-illuminated structure with integral memory
(1) Gapless OCL (2) Aluminum wiring layer (3) Light receiving surface
(4) Photodiode substrate (5) Copper wiring layer (6) Pixel area
(7) Stacked layer
Beautiful 4K imaging
High-resolution quality of 4K movies
Full-pixel readout with no pixel binning makes it possible to condense approximately 2.4 times the amount of data required for 4K (the equivalent of the amount of data required for 6K) into 3840 x 2160 4K output. This oversampling process plus full-frame pixel readout without binning results in the highest possible 4K movie image quality.
Quad-VGA OLED Tru-Finder™
The new high-resolution 3686k-dot electronic viewfinder (EVF) shows a clear image with fine detail. The legendary ZEISS® T* Coating greatly reduces reflections. Smooth EVF images realized by 120fps frame rate even allow you to easily track a subject in fast motion. Fluorine coating on the outermost lens provides improved protection from dirt.
5-axis image stabilization
New body-integrated 5-axis image stabilization unit offers a 5.0-stop shutter speed advantage. The live-view monitor image is also stabilized, so you can compose images easily even when shooting a fast-moving subject. (1) Yaw (2) Pitch (3) Roll.
FTP file transfer
A new terminal for wired LAN connection lets you transfer still images to an FTP server for viewing and management. Since FTPS (File Transfer Protocol over SSL/TLS) is supported, image files can be encrypted while being transferred.
High-speed continuous shooting at up to 20fps, blackout-free shooting, AF/AE live-view tracking, shutter speed up to 1/32000, silent vibration-free Anti-Distortion shutter, sensitivity up to ISO 204800 (extended), pro-style excellent usability, and advanced 4K movie.