Sony has announced the latest addition to its Alpha 7R series full-frame mirrorless camera line-up, the 7R IV, and the megapixel race is on once again.
The camera features a newly developed full-frame, back-illuminated CMOS image sensor with a resolution of 61-megapixels, the world’s first of its kind, says the company. The new sensor’s back-illuminated structure and effective noise reduction techniques are said to combine to deliver extremely low-noise and high-sensitivity performance. The camera also boasts a 15-stop dynamic range at low sensitivities, resulting in smooth natural gradations ranging from deep shadows to highlights, and utilizes algorithms from many of the latest Alpha cameras to maintain outstanding colour reproduction, according to Sony.
This camera is equipped with a 5-axis, optical in-body image stabilization system that has been fine-tuned to support its high-resolution shooting capacity, resulting in a shutter speed advantage of 5.5-steps, notes Sony. Additionally, the shutter unit assembly has been redesigned to further reduce movement that may cause blur.
The 7R IV also includes Sony’s highest resolution viewfinder ever, a 5.76 million dot UXGA OLED Tru-finder EVF. About 1.6x the resolution of the EVF in the 7R III, this new viewfinder provides an extremely accurate, true-to-life depiction of the scene being framed, Sony claims. The display quality can be set to ‘Standard’ or ‘High’ mode, and to either 60 fps or 120 fps refresh rate to best match the subject and shooting conditions.
Additionally, the new camera features an evolved Pixel Shift Multi Shooting mode that composites up to 16 full-resolution images. In this mode, the camera is said to precisely shift the sensor in one pixel or half-pixel increments to capture 16 separate pixel-shifted images containing a total of 963.2 million pixels of data, which are then composited into a 240.8 million pixel (19008 x 12672 pixels) image using Sony’s “Imaging Edge” desktop application.
The camera can shoot full resolution images at up to 10 fps with continuous, accurate AF/AE tracking for up to approximately seven seconds in full-frame, full-resolution mode (JPEG / RAW), and approx. three times as long in APS-C crop mode delivering 26.2-megapixel images.
The upgraded focusing system consists of 567 focal-plane phase-detection AF points that cover approximately 74 percent of the image area. There are also 425 contrast AF points that add extra precision and reliability for low light and other situations best served by contrast AF. The higher AF sensor density and refined tracking algorithms of the new camera produce a notable improvement in tracking performance, says Sony, allowing complex subject motion and sudden subject movements to be reliably tracked with greater precision than ever.
The 7R IV also supports Real-time Eye AF, which employs artificial intelligence to detect and process eye location data in real-time, locking and maintaining focus on the subject’s eye with extreme precision, according to the company. This is available for both animal and human subjects, with either animal or human Eye AF mode selectable depending on the shooting situation. Real-time Tracking is available as well, which utilizes a newly developed subject recognition algorithm to “ensure the ultimate subject tracking and persistence of the focusing system,” Sony claims. There is also an anti-flicker shooting mode, which automatically detects the presence of fluorescent or artificial lighting in a shooting environment.
The new model includes wireless LAN functionality to support the conventional 2.4 GHz band, as well as a high-speed 5 GHz band for faster, more stable data transfer. Wireless PC remote connectivity (wireless tethering shooting) is also available, a first for Sony cameras.
In addition to high-speed Wi-Fi and wireless PC connectivity, the camera is equipped with a SuperSpeed USB (USB 3.2 Gen 1) USB Type-C connector that supports extremely fast wired data transmission, with almost doubled data transfer speed achieved in combination with Sony’s Imaging Edge software (compared to the 7R III). It also supports FTP data transfer with background transfer capability, allowing photographers to send images to a specified FTP remote server while they are still shooting or reviewing images.
To support an efficient, high-speed, connected professional workflow, Sony has announced version 2.0 of its “Imaging Edge” desktop applications (‘Remote’/’Viewer’/’Edit’). The ’Remote’ application allows users to control cameras and monitor live shooting on their PC screen; the ‘Viewer‘ application is used to preview, rate and select photos from large libraries; and the ’Edit‘ application can develop RAW data into high-quality photos for delivery.
To maximize convenience in image transfer, when utilizing the latest version of Sony’s Imaging Edge Mobile app, the camera can transfer images to a connected smartphone even if the camera’s power is set to OFF.
The 7R IV offers 4K (3840×2160 pixels) video recording across the full width of the image sensor, and full pixel readout without pixel binning in Super 35 mm mode. S-Log 2 and S-Log 3 are also available to maximize colour grading flexibility, with S-Log 3 offering a total of 14-stops of dynamic range. Hybrid Log-Gamma (HLG) is also available to support an Instant HDR workflow.
For video autofocus, the camera utilizes a refined Fast Hybrid AF system that achieves faster, smoother, more stable autofocus during video shooting – even if an object temporarily moves in front of the intended subject, says Sony. The camera also includes Touch Tracking functionality during movie shooting, allowing the user to touch the screen on their intended subject for instant acquisition.
The 7R IV debuts Real-time Eye AF for movie shooting, a first in any of Sony’s cameras. When activated, the eye of a subject is automatically tracked, allowing the shooter to focus on the content itself as opposed to what is in focus or not. Touch Tracking functionality will also automatically initiate Eye AF when a human subject is selected.
Another video feature is the addition of a digital audio interface to the camera’s Multi Interface Shoe (MI Shoe), allowing a direct, digital connection from the new ECM-B1M Shotgun Microphone or XLR-K3M XLR Adaptor Kit for clear, low-noise and high-quality audio recording. Interval shooting for creating time-lapse videos is available, as well as full HD recording at up to 120 fps, Slow and Quick Motion functions and more.
The camera features upgraded dust and moisture resistance, with additional sealing provided at all body seams, battery compartment cover and media slots. The camera is built with an extremely lightweight and durable magnesium alloy and also has an upgraded six screw, extra-firm lens mount.
Additional enhancements to the body design include an improved grip for greater comfort and a more sure hold within the hand; an increase in the diameter and feedback for the ‘AF-ON’ button; a new multi-selector joystick design for improvised control; an exposure compensation dial lock button; and a redesigned shape and new position for the rear dial. The camera also includes two UHS-II compatible media slots.
Camera setting registration is expanded. Now, almost all camera settings can be saved to, and read from, an inserted memory card. Up to 10 combinations can be saved to any individual card and loaded into any camera body of the same model.
Battery life has been improved with a CIPA measurement of up to 670 still images per change using LCD monitor, or 530 images with EVF. The new optional VG-C4EM Vertical Grip holds two NP-FZ100 batteries, and the optional Multi Battery Adaptor (NPA-MQZ1K) can hold up to four Z batteries. The body can also be powered via the USB connector.
The Sony Alpha 7R IV will ship in September for approximately $4,500.