Sony a7R IV A Mirrorless Camera Body
The Sony a7R IV A is the fourth edition of the a7R series and includes an updated 61MP Exmor R BSI CMOS sensor and enhanced BIONZ X image processor. Up to 10 fps shooting is possible along with UHD 4K30 video recording with support for Real-time Eye AF and Tracking AF technologies. The a7R IV also updates with more robust weather sealing, and the OLED electronic viewfinder has been boosted to 5.76m-dot resolution.
Please note; this is the Sony a7R IV “A” edition, which has a 3-inch tilting touchscreen monitor with an increased 2.359.296m-dot resolution (increased from 1.440 000m)
61.0-megapixel full-frame Exmor R™ CMOS sensor
Sony’s newly developed 35mm full-frame back-illuminated CMOS sensor with 61.0 megapixels enables the full-frame mirrorless α7R IV to attain expressive prowess once expected only in conventional medium-format cameras. Thanks to this mirrorless design, absence of mechanical mirror shock can maximise resolution without negative effect on image quality. The α7R IV realises the level of image quality that surpasses the expectation for conventional full-frame cameras especially in the low- to mid-sensitivity range. Sony’s proprietary technology achieves superb high resolution while assuring low noise and high sensitivity.
BIONZ X image processing engine
To match the excellence of the new image sensor, high-speed BIONZ X image processing engine is also further enhanced to faithfully reproduce details and reduce noise significantly. Noise that tends to occur due to heightened pixel count is minimised for high image quality, especially in the standard ISO sensitivity range up to ISO 32000. Wide 15-stop dynamic range at low ISO sensitivity (for stills) delivers smoother reproduction of gradations from shadow to highlight. Moreover, the α7R IV’s inherited colour reproduction in still pictures — acclaimed in the latest α series — captures skin colour in portraits and vivid colour of flowers for natural α7R IV depiction.
ISO 100-32000 range
Regardless of increased pixels, the α7R IV delivers highest standard ISO 320003, and reduces noise in the low- and mid-sensitivity ranges, achieving high-quality imagery.
Wide, fast, and steadfast AF
Thanks to increased coverage and density of AF points and enhanced algorithm for tracking moving subjects, overall AF performance has evolved to provide steadfast, accurate tracking of complex subject motion and speed changes. The α7R IV’s Fast Hybrid AF system combines high-speed, highly trackable phase-detection and high-precision contrast-detection autofocusing, even for shooting venues as dimly lit as EV-319. 567-point phase-detection AF and 425-point contrast-detection AF provide wider image area coverage of 99.7% height and 74.0% width. In addition, this remarkable AF system provides as rapid response as α7R III, despite mass data handling due to the extremely high-resolution CMOS sensor, even in dim shooting venues.
In-body 5-axis image stabilisation
The in-body 5-axis image stabiliser algorithm is optimised to maximise high-resolution 61.0-megapixel image sensor performance. This fully supports your handheld shooting for reliability as effective as 5.5-stop4 higher shutter speed.
Shoot in absolute silence
Silent shooting not only provides a useful advantage in venues where quiet is required but avoids vibration that can cause camera-shake blur. Vibration-free shutter maximises extremely high α7R IV resolution for crisp clear images.
5.76-million-dot UXGA OLED Tru-Finder
Newly featured in the α7R IV, this 5.76-million-dot electronic viewfinder provides high-precision, high-brightness, and high-contrast visibility, reproducing fine detail with 1.6 times higher resolution than α7R III. “High Display Quality” mode draws on the effective 61.0MP (approx.) image sensor to suppress moiré and jaggies for highly precise and natural images on viewfinder; 120/100fps of “High” finder frame rate mode shows smoother motion, so it’s simpler to trace moving subjects. Fluorine coating makes it easier to remove dirt or a fingerprint from the lens, for more comfortable viewing in inclement weather and better concentration on shooting.
High-speed 10fps burst shooting with AF/AE tracking
Despite high resolution of 61.0MP, an ingenious algorithm enables efficient processing for high-speed continuous shooting of up to 10fps with AF/AE tracking through a mechanical shutter. It is also possible to shoot continuously at up to 8fps in live-view mode, with minimal display time lag for capturing fast-moving subjects. After a full-frame image is cropped down to APS-C size or if APS-C shooting mode is chosen, you can still get 26.2MP high-resolution images. This is a great advantage for wild animal photographers who rely on cropping after capturing images of quickly moving animals/birds afar.
High-resolution 4K movies
For high-resolution 4K movies with great detail but minimal moiré and jaggies, Super 35mm mode condenses approximately 2.4 times the data required for 4K movies (QFHD: 3840 x 2160). Advanced α7R IV processing records 4K movies with enhanced reproduction of skin colour and smoother gradations. In addition to S-Log3 and S-Log2 gamma curves, the α7R IV offers HLG (Hybrid Log-Gamma) picture profile for instant HDR workflow, supporting a wide range of HDR movie production needs. The α7R IV incorporates XAVC S recording format for 4K35 and enables high-quality images at high bitrates of up to 100Mbps.
Increased Fast Hybrid AF speed and precision for smoother, more stable movie AF
Faster, more precise Fast Hybrid AF achieves smoother, more stable autofocus in movie recording. This greatly reduces the need for focus operation when the camera is used on a gimbal or in assistance-free movie shooting. New Touch Tracking function is also available in movie recording, allowing you to simply touch an aimed subject on the monitor to initiate tracking. Swift AF-S operation is activated when shutter button is pressed halfway (or AF-ON button is pressed), for simplifying movie-making in “must succeed” situations including weddings and documentaries.
Versatile movie recording functions
The α7R IV newly allows you to change XAVC S movie file names. For example, you can designate a prefix in advance for easy identification when shooting with multiple cameras. Also, interval shooting function is available for producing time lapse movies. A wide array of functions for pro video workflow is also provided, including clean HDMI output, time code / user bits (TC/UB), rec. control, marker display/setting, zebra function, Slow and Quick Motion, simultaneous proxy movie recording, extraction of a still from a movie, and Gamma Display Assist.
New MI Shoe
Digital audio interface is added to Multi Interface Shoe (MI Shoe). Combination with new ECM-B1M Shotgun Microphone or new XLR-K3M XLR Adapter Kit enables clear sound recording with minimised quality deterioration by sending digital audio signal to the camera. Cable-free, battery-free style enhances the flexibility of the α system movie shooting.
Various touch operations
Touch Focus enables you to simply touch the monitor screen to specify a desired subject near frame edges. Touchpad focus point control allows you to drag the focus frame to any point with a fingertip while using the viewfinder. Touch Tracking makes it easy to initiate subject tracking in stills and movies. Double-tap is for magnified view. Also, α7R IV response speed of Touchpad operation is approx. 1.5 times faster than α7R III
Reliable durability and weather resistance
The α7R IV brings you further enhanced body durability, with full use of lightweight, high-rigidity magnesium alloy for covers and internal frame, keeping the camera highly rigid and light. In response to pro opinions, enhanced sealing is applied to battery cover, terminal cover, and all joints in the chassis, and a double-sealed sliding mechanism replaces the hinge to the media compartment lid for better moisture resistance. Routes to dust and moisture entry have been re-examined, and a cushion around the lens mount is added to ensure reliable operation in challenging environments.
Redesigned controls for confident and comfortable operation
A new multi-selector lets you shift point of focus quickly and intuitively to avoid missing moving subjects. The surface texture is changed to enhance button response for easier and more confident operation, in reply to pro users’ requests. In addition, the AF-ON button is enlarged and optimised for easier access, with an adjusted click feeling and location. And, the new Exposure Compensation Dial Lock Button locks or unlocks alternately at each press, and prevents accidental turning when set to lock position. These improvements enhance your concentration on shutter release to “capture the moment” instantly.
Smart collaboration with mobile devices and accessories
Even after the camera power is off, still and movie files stored in an SD memory card inserted in the camera can be transferred via Wi-Fi connection if you set it up in advance. You can operate Imaging Edge Mobile app installed in your mobile that is paired with the camera to select necessary images.
Sony a7R IV A Key Features
- 61MP Full-Frame Exmor R BSI CMOS sensor
- BIONZ X image processor
- 567-Point phase-detection AF system
- UHD 4K 30p video recording with HLG & S-Log3 Gammas
- 5.76m-dot Tru-Finder OLED EVF
- 3.0″ tilting touchscreen LCD
- Up to 10 fps burst shooting
- ISO: 100-32000
- 5-axis SteadyShot in-body image stabilisation
- 240MP pixel shift multi shooting
- Dual UHS-II SD slots