Sony
Alpha a7R III Mirrorless Digital Camera (Body Only) is a versatile,
high-performance camera characterized by not only its resolution, but by its
multimedia versatility. Revolving around a full-frame 42.4MP Exmor R BSI CMOS
sensor and updated BIONZ X image processor, the a7R III affords an impressive
10 fps continuous shooting rate along with improved autofocus performance for faster,
more reliable subject tracking along with wide frame coverage. This updated
Fast Hybrid AF System employs a combination of 399 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 throughout the sensitivity range from ISO 100-32000,
which can further be expanded to ISO 50-102400. Video recording capabilities
have also been extended for enhanced quality when recording UHD 4K video with
the full width of the full-frame sensor, or when using a Super35 area and 5K
oversampling to minimize moiré and aliasing. Additionally, benefitting both
stills and video operation, the a7R III retains the 5-axis SteadyShot INSIDE
sensor-shift image stabilization, which is now effective to minimize the
appearance of camera shake by up to 5.5 stops.
In
addition to imaging updates, the a7R III also sports a revised body design,
which includes a 3.69m-dot Tru-Finder OLED electronic viewfinder for bright,
clear, and realistic eye-level monitoring. A rear 3.0" 1.44m-dot tilting
touchscreen LCD is also available for intuitive settings control and to better support
working from high and low angles. 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 530 shots per charge when using the
viewfinder. Suiting the camera's use in trying conditions, the magnesium alloy
chassis and extensive weather-sealing also render the a7R III dust- and
moisture-resistance
42.4
MP Exmor R BSI CMOS Sensor and BIONZ X Image Processor
Featuring a back-illuminated design, the full-frame 42.4-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 gapless on-chip lens design and an anti-reflection coating, as well
as eliminating the optical low-pass filter, to improve light collection and
enhance detail. Also, the copper wiring layer dramatically improves data
transmission speed for creating 14-bit, high-resolution 42.4-megapixel stills
with a native sensitivity range from ISO 100-32000, which can be further
expanded to ISO 50-102400. 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 76 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 399 phase-detection
points, which cover approximately 68% 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 a7R models, as well as improved
low-light focusing response down to -3 EV. 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.
5-Axis
SteadyShot INSIDE Image Stabilization
Packed into the robust a7R III is a 5.5-stop effective 5-axis SteadyShot INSIDE
image stabilization system that compensates for five different types of camera
shake encountered during handheld shooting of stills and video. This allows
users to confidently use any lens, even adapted lenses, for critical imaging
without encountering blur from camera shake.
For
long focal lengths, the system will correct for pitch and yaw adjustments.
Macro and high-magnification imagery, on the other hand, will benefit from the
inclusion of horizontal and vertical shift compensation. All shooting styles
will get usage out of the roll compensation. All 5 axes of stabilization will
function at all times, even when used with third-party lenses and adapters or
lenses with built-in optical stabilization.