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Sony has introduced the a7R IV, which the company calls 'another milestone in mirrorless cameras.
A New Level of Image Quality
The camera has a full-frame 61MP BSI-CMOS sensor with a claimed 15 stops of dynamic range (it's the first new sensor since 2015, according to Sony). It has a hybrid AF system with 567 PDAF and 425 contrast-detect point, and 74% frame coverage. There's also real-time eye, human and animal AF. The camera can shoot at 10 fps with continuous AF for up to 68 photos.
THE KING OF FULL-FRAME SENSORS
The Alpha 7R IV features a newly developed
61 Megapixel back-illuminated image sensor, the first of its kind. This remarkable new sensor delivers 15 stops of dynamic range for the extraordinarily detailed rendition of subtle details, while tweaked & refined algorithms ensure pleasing colours and skin tones.
The body has been redesigned, with upgraded weather-sealing, including foam gaskets around the battery and card doors, and raised lips around all the connectors that, along with rubber port doors prevent water from working its way around the seal. There'an also a significantly deeper grip, a larger joystick and repositioned, 'newly designed' buttons and dials. There's also a 5.76M-dot EVF, dual UHS-II card slots and USB-C. The camera also has 802.11ac Wi-Fi plus Bluetooth and NFC.
The a7R IV uses the NP-FZ100 battery, which can take approximately 670 shots using the LCD and 530 using the EVF, based on CIPA standard testing. A battery grip, which holds two FZ100s.
As with its predecessor, the a7R IV has built-in 5-axis image stabilization, which can reduce shake by up to 5.5 stops, according to Sony. It has the same Bionz X processor and tilting 1.44M-dot touchscreen display as the Mark III.
If you drop down to APS-C crop mode you get 26 Megapixel images, with near-total-frame AF coverage and 325 PDAF points.
The Pixel Shift mode can capture 960 Megapixels worth of data by compositing 16 images, which can be processed via Sony's Imaging Edge software to create 240MP photos. Users have a choice of 16-shot mode that makes 1/2 pixel shifts or a 4-shot mode that makes full pixel shifts. Using the 1/2 shift mode you get twice the spatial resolution and full colour at each pixel, while the full shift mode (which uses 4 images) just cancels out the Bayer filter.
The a7R IV can capture oversampled 4K/30p video with touch tracking and real-time Eye AF, and support for 8-bit S-Log2/3 and HLG. When using the Super 35 crop there is an additional 1.2x crop at 30p and 1.1x at 24p. As with its predecessor, the top bit rate is 100Mbps using XAVC S.
There's also a new digital interface between the microphone and camera, making the a7R IV the first camera to accept digital audio input. To go along with that there's a new microphone and an XLR adapter, both of which have built-in ADCs to provide a digital signal to the camera (but which also have analog output modes to retain compatibility with older cameras).
The camera includes new connectivity options, thanks to the addition of 5GHz Wi-Fi. Wi-Fi can now be used for tethered shooting as well.
SHOOTING AND FOCUSING SPEED
Combining 567 on-sensor phase-detect autofocus points with refined tracking algorithms, the Alpha 7R IV boasts extraordinarily sophisticated autofocus abilities, with real-time tracking and eye autofocus enabled for both still and movie recording. All of this is available for full-
speed 10fps image capture with AF.
UPGRADES & SECONDARY FEATURES
A fast standard zoom favoured for its versatility, the Sony FE 24-70mm f/2.8 GM is a wide-angle to short telephoto lens designed for E-mount mirrorless cameras. Featuring a constant f/2.8 maximum aperture, this lens maintains consistent performance throughout the zoom range and benefits working in low-light conditions and with selective focus techniques. Complementing the apt light-gathering capabilities is an equally impressive optical design, which incorporates three aspherical elements and two extra-low dispersion elements. One of the aspherical elements features an XA (extreme aspherical) designation, ensuring its refined surface precision and notable ability to minimize spherical aberrations throughout the zoom range. Additionally, a Nano AR Coating has been applied to individual elements to significantly minimize lens flare and ghosting for increased contrast and colour neutrality. Pairing a sophisticated optical design and versatile speed, this standard zoom is well-suited for use in a wide array of environments and lighting conditions.
Beyond the attributes of the lens system itself, this 24-70mm is also characterized by a Direct Drive SSM (Super Sonic wave Motor) system that provides fast, quiet AF performance as well as responsive manual focus handling. The lens is also dust- and moisture-sealed, to permit working in inclement weather conditions, and nuanced details, such as a focus hold button and rubberized control dials, further the intuitiveness in handling.
| Lens Mount | Sony E |
| Camera Format | Full-Frame (1x Crop Factor) |
| Pixels | Actual: 62.5 Megapixel Effective: 61 Megapixel |
| Maximum Resolution | 9504 x 6336 |
| Aspect Ratio | 1:1, 3:2, 4:3, 16:9 |
| Sensor Type | CMOS |
| Sensor Size | 35.7 x 23.8 mm |
| Image File Format | JPEG, RAW |
| Bit Depth | 14-Bit |
| Image Stabilization | Sensor-Shift, 5-Axis |
| ISO Sensitivity | Auto, 100 to 32000 (Extended: 50 to 102400) |
| Shutter Speed |
Mechanical Shutter 1/8000 to 30 Second Bulb Mode 1/8000 to 1/4 Second in Movie Mode |
| Metering Method | Center-Weighted Average, Highlight Weighted, Multiple, Spot |
| Exposure Modes | Aperture Priority, Manual, Program, Shutter Priority |
| Exposure Compensation | -5 to +5 EV (1/3, 1/2 EV Steps) |
| Metering Range | -3 to 20 EV |
| White Balance | Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater |
| Continuous Shooting | Up to 10 fps at 61 MP for up to 68 Exposures (JPEG) |
| Interval Recording | Yes |
| Self Timer | 2/5/10-Second Delay |
| Recording Modes |
XAVC S UHD 4K (3840 x 2160) at 23.976p/25p/29.97p [60 to 100 Mb/s] Full HD (1920 x 1080) at 23.976p/24p/25p/29.97p/50p/59.94p/100p/120p [16 to 100 Mb/s] AVCHD Full HD (1920 x 1080) at 50i/59.94i [17 to 24 Mb/s] |
| External Recording Modes |
4:2:2 8-Bit DCI 4K (4096 x 2160) at 23.976p/25p/29.97p Full HD (1920 x 1080) at 23.976p/50i/50p/59.94i/59.94p |
| Recording Limit | Up to 29 Minutes |
| Video Encoding | NTSC/PAL |
| ISO Sensitivity | Auto: 100 to 12800 Manual: 100 to 32000 |
| Audio Recording | Built-In Microphone (Stereo) External Microphone Input (Stereo) |
| Focus Type | Auto and Manual Focus |
| Focus Mode | Automatic (A), Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S) |
| Autofocus Points | Phase Detection: 567 Contrast Detection: 425 |
| Autofocus Sensitivity | -3 to +20 EV |
| Viewfinder Type | Electronic (OLED) |
| Viewfinder Size | 0.5" |
| Viewfinder Resolution | 5,760,000 Dot |
| Viewfinder Eye Point | 23 mm |
| Viewfinder Coverage | 100% |
| Viewfinder Magnification | Approx. 0.78x |
| Diopter Adjustment | -4.0 to +3.0 |
| Monitor Size | 3" |
| Monitor Resolution | 1,440,000 Dot |
| Monitor Type | Tilting Touchscreen LCD |
| Built-in Flash | None |
| Flash Modes | Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync, Wireless |
| Maximum Sync Speed | 1/250 Second |
| Flash Compensation | -3 to +3 EV (1/3, 1/2 EV Steps) |
| Dedicated Flash System | S-TTL |
| External Flash Connection | Hot Shoe, PC Terminal |
| Memory Card Slot | 2 x SD/SDHC/SDXC |
| Connectivity | 3.5mm Headphone, 3.5mm Microphone, HDMI D (Micro), USB 2.0 Micro-B, USB 3.0, USB Type-C |
| Wireless | Wi-Fi Bluetooth |
| GPS | None |
| Operating Temperature | 32 to 104°F / 0 to 40°C |
| Battery | 1 x NP-FZ100 Rechargeable Lithium-Ion, 7.2 VDC, 2280 mAh (Approx. 530 Shots) |
| Dimensions (W x H x D) | 5.07 x 3.8 x 3.05" / 128.9 x 96.4 x 77.5 mm |
| Weight | 1.46 lb / 665 g |
Every effort is made to ensure the information herein is accurate at the time of publication.
| Features | |
|---|---|
| Image Stabilization | No |
| Autofocus | Yes |
| Physical | |
|---|---|
| Filter Thread | Front: 82 mm |
| Dimensions (DxL) | Approx. 3.45 x 5.35" (87.6 x 136 mm) |
| Weight | 1.95 lb (886 g) |
| Packaging Info | |
|---|---|
| Package Weight | 3.15 lb |
| Box Dimensions (LxWxH) | 8.4 x 5.7 x 5.0" |
