Home News New Sony a7R Mark IV with 61MP backlit sensor

New Sony a7R Mark IV with 61MP backlit sensor


The new Mark IV version of the Sony a7R features the world’s first 35mm full-frame 61MP back-illuminated sensor. The Exmor CMOS sensor is complemented by the latest-generation Bionz X image processor.

The camera offers 15-stops of dynamic range at low sensitivity, resulting in smooth natural graduations from deep shadow to highlight. The focal-plane phase-detect AF points over 74% of the image area and enables 425 contrast AF points.

The IV introduces real-time Eye AF for and advanced real-time tracking for video with real-time Eye AF for still images. When used with APS-C lenses, the camera provides an impressive 26.2MP image.

A new 5.76 million dot Ultra-XGA OLED finder is said to provide outstanding detail, brightness and contrast.

The Sony a7R IV body will arrive in dealers next month and will retail in the UK for approximately £3,500.


  • Sony Introduces High-Resolution Alpha 7R IV Camera with World’s First 61.0 MP Back-illuminated Full-frame Image Sensor
  • Unprecedented highest resolution and widest dynamic range for αTM (AlphaTM) system combined with high speed performance, in a lightweight compact body
  • World’s firsti 35mm full-frame 61.0 MPii back-illuminated Exmor R™ CMOS image sensor with latest-generation BIONZ X™ image processor
  • 15-stopiii dynamic range at low sensitivities, resulting in smooth natural gradations ranging from deep shadows to highlights
  • High-speed continuous shooting at up to 10 fpsiv with full AF / AE tracking for approx. 7 secondsv in full-frame mode with an increased buffer memory, and approximately three times more in APS-C mode
  • 567 focal-plane phase-detection AF points covering 74% of image area and 425 contrast AF points
  • Debut of Real-time Eye AF for movie recordingvi and advanced Real-time Trackingvii plus Real-time Eye AF for still image recording
  • MFeatures an APS-C crop mode delivering stunning high resolution of 26.2MPii
  • M5.76 million dot UXGA (Ultra-XGA) OLED Tru-Finder™ electric viewfinder with outstanding detail, brightness and contrast
  • Upgraded connectivity and operability including high-speed Wi-Fi support, wireless PC remote connectivityviii, FTP wireless transfer, faster data transfer via USB and more
  • Professional 4K movie recording functionality including full pixel readout with no pixel binning in Super 35mm mode,ix S-Log3, HDR workflow support
  • Multi Interface Shoe™ with digital audio interface deliver the high-quality sound recording with new Sony’s microphones and XLR adaptor
  • Additional enhancements to the body design include an improved grip and button for improvised control with compact, lightweight body

Sony today announced the latest addition to its acclaimed Alpha™ 7R series full-frame mirrorless camera line-up; the extremely versatile, powerful Alpha 7R IV (model ILCE-7RM4).

Sony’s highest resolution full-frame camera ever, the new Alpha 7R IV delivers stunning image quality with high resolution and wide dynamic range while maintaining outstanding focusing performance, high-speed continuous shooting and much, much more.

“We are continuing to drive innovation, break boundaries and redefine the expectations of digital camera performance,” said Yann Salmon Legagneur, Director of Product Marketing, Digital Imaging, Sony Europe. “The new Alpha 7R IV combines medium format level image quality with high-speed shooting, extremely fast focusing and a long list of upgrades to design, connectivity and usability. This will allow professional photographers, videographers and all other types of creators to capture content in ways that were simply not possible before.”

A New Level of Image Quality

The new Alpha 7R IV features a newly developed 35mm full-frame back illuminated CMOS image sensor with a resolution of 61.0 MP,ii the world’s firsti of its kind. The new sensor’s back-illuminated structure and effective noise reduction techniques combine to deliver extremely low-noise, high sensitivity performance ensuring the absolute maximum image quality. The camera also boasts an impressive 15-stopiii dynamic range at low sensitivities, resulting in smooth natural gradations ranging from deep shadows to highlights, and utilises algorithms from many of the latest Alpha™ cameras to maintain outstanding colour reproduction.

This new full-frame model is equipped with an innovative 5-axis optical in-body image stabilisation system that has been fine-tuned to support its high-resolution shooting capacity, resulting in a shutter speed advantage of 5.5-steps.x Additionally, the shutter unit assembly has been carefully re-designed to reduce even the slightest movement that may cause blur.

The Alpha 7R IV also includes Sony’s highest resolution viewfinder in any camera, a 5.76 million dot UXGA OLED Tru-finder EVF. About 1.6x the resolution of the EVF in the Alpha 7R III, this new viewfinder provides an extremely accurate, true-to-life depiction of the scene being framed. 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 Shootingxi mode that composites up to 16 full-resolution images. In this mode, the camera precisely shifts the sensor in 1 or 0.5-pixel increments to capture 16 separate pixel-shifted images containing a total of 963.2 million pixels worth of data then composited into a 240.8 million pixels (19008 x 12672 pixels) image using the “Imaging Edge™” desktop application.xii Ideal for photographing architecture, art or any other still life photography subject, this enhanced mode produces photographs with a level of detail and colour accuracy that is simply stunning.

Shooting and Focusing Speed

The innovative new Alpha 7R IV full-frame mirrorless camera can shoot full resolution images at up to 10 fpsiv with continuous, accurate AF/AE tracking for up to approximately 7 secondsv in full-frame, full-resolution mode (JPEG / RAW), and approx. 3x seconds in APS-C crop mode delivering 26.2MPii images. These high-speed options ensure that fast moving subjects can be captured with extreme accuracy and incredible image detail.

The upgraded focusing system of the Alpha 7R IV is comprised of 567 focal-plane phase-detection AF points that cover approximately 74% of the image area. There are also 425 contrast AF points that add extra precision and reliability for low light and other situations that are 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, allowing complex subject motion and sudden subject movements to be reliably tracked with greater precision than ever.

The Alpha 7R IV also supports Real-time Eye AF, which employs artificial intelligence to detect and process eye location data in real-time, stay locked onto the subject’s eye with extreme precision. This is available for both animal and human subjects, with an option to select either animal or human Eye AF mode depending on the shooting situation. Additionally, the Real-time Trackingvii feature is available which utilises a newly developed subject recognition algorithm to ensure the ultimate subject tracking and persistence of the focusing system. There is also an anti-flicker shootingxiii mode, which automatically detects the presence of fluorescent or artificial lighting in a shooting environment to minimise any impact on the final image.

Enhanced Connectivity for Professional Workflow

Sony’s new Alpha 7R IV full-frame camera is equipped with a variety of advanced connectivity features designed to enhance professional workflow. The new model includes wireless LAN functionality to support the conventional 2.4 GHz band as well as a high-speed 5 GHzxiv band for faster, more stable data transfer. Wireless PC remote connectivity (wireless tethering shooting)viii is also available on the new Alpha 7R IV, a first for Sony cameras. Requested by many working professionals, this will allow for much more freedom in studio and location shoots, where the photographer can move around freely without restriction.

In addition to high-speed Wi-Fi® and wireless PC connectivity,viii the new full-frame 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 Imaging Edge software compared to the Alpha 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 “Imaging Edge” desktop applications (‘Remote’/’Viewer’/’Edit’).xiii The ’Remote’ application allows users to control cameras and monitor live shooting on their PC screen; the ‘Viewer‘ application is used to quickly preview, rate and select photos from large libraries and the ’Edit‘ application can develop RAW data into high-quality photos for delivery.

To maximise convenience in image transfer, when utilising the latest version of Sony’s Imaging Edge Mobile™ application,xv the camera can now transfer images to a connected smartphone even if the power is set to OFF.xvi

High-resolution 4K and Professional Filmmaking Features

In addition to its impressive still image capabilities, the new Alpha 7R IV performs exceptionally well as a serious filmmaking tool, offering 4K (3840×2160 pixels) video recording and full pixel readout without pixel binning in Super 35mm mode.ix This ensures high-quality 4K footage with exceptional detail and depth. 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. HLG (Hybrid Log-Gamma)xvii is also available on the Alpha 7R IV to support an Instant HDR workflow.

For video autofocus, the versatile new full-frame camera utilises 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. The camera also includes Touch Tracking functionality during movie shooting, allowing the user to simply touch the screen on their intended subject for instant acquisition.

The new Alpha 7R IV debuts Real-time Eye AF for movie shooting,vi a first in any of Sony’s cameras. When activated, the eye of a subject is automatically tracked with high precision and reliability, allowing the shooter to focus on the content itself as opposed to what is in focus or not in focus. The Touch Tracking functionality will also automatically initiate Eye AF when a human subject is selected.

Another notable video feature is the addition of a digital audio interface to the camera’s Multi Interface Shoe™ (MI Shoe), allowing direct connection of 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 Motionxviii functions and much more.

Enhanced Build, Design and Customisability

The new Alpha 7R IV has several upgrades to its design and usability, with many adjustments being implemented directly based of the voice of Sony’s professional community.

To maximise durability, the new Alpha 7R IV features upgraded dust and moisture resistance,xix with additional sealing provided at all body seams, the battery compartment cover and media slots. The camera is built with an extremely lightweight and durable magnesium alloy, and has an upgraded six screw, extra-firm mount.

Additional enhancements to the body design include an improved grip for greater comfort and a surer 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. A strong request from many professional users, the new camera also includes two UHS-II compatible media slots, allowing for higher overall capacity and faster read/write speeds.

For added convenience, 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 type.

Despite its 1.5x pixel count, the battery life has also been improved – with a CIPA measurement of up to 670 still images per charge using LCD monitor,or530 images with EVF). For even more uninterrupted operating time, 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.xx

New Accessories

Sony has released a variety of new accessories to compliment the new Alpha 7R IV camera, including:

VG-C4EM Vertical Grip – provides same operation, handling and design as the Alpha 7R IV camera, including upgraded dust and moisture resistance;xx doubles battery life and allows USB battery-charging via the camera body.

ECM-B1M Shotgun Microphonexxi – Eight high-performance mic capsules and advanced digital signal processing provide three selectable directivity patterns in one compact microphone of approx. 99.3mm (4 inches) in length with Super-directional pick up; when connected to the Alpha 7R IV via its Multi Interface Shoe with digital audio interface support, audio is directly transferred to the camera in digital form so that the highest possible quality is achieved without noise or degradation.

XLR-K3M XLR Adaptor Kitxxii – Two XLR/TRS combo connectors and one 3.5mm stereo mini jack for microphone and line input, with extensive control that helps facilitate the post processing workflow; connected to the Alpha 7R IV via its Multi Interface Shoe with digital audio interface support, audio is directly transferred to the camera in digital form so that the highest possible audio quality is achieved without noise or degradation; supplied extension cable for Audio provides extra flexibility for camera attachment with rig, cage or bracket.

SF-M series TOUGH

Ultra-Tough UHS-II SD card with ultra-fast speed up to 277MB/s (read) is ideal for shooting in extreme conditions and streamlines the post-shooting workflow; supplied with file recovery software (supports both macOS and Windows).


Fast USB for PC hub with UHS-II SD/microSD reader, supporting USB 3.1 Gen 2 and 100W USB Power Delivery (USB PD), contributes to efficient workflow by ultra-fast, stable backup to PC or SSD.

Pricing and Availability

The new Alpha 7R IV Full-frame Interchangeable Lens Camera will ship in Europe in August 2019, priced at approximately £3,500 and €4,000

VG-C4EM will ship in September 2019 for approximately £400 and €450

ECM-B1M will ship in September 2019 for approximately £340 and €380

XLR-K3M will ship in October 2019 for approximately £580 and €650


[i] As of July 2019, based on Sony survey of digital cameras with a full-frame image sensor

[ii] Approximately, effective

[iii] Still images. Sony test conditions

[iv] Up to 10 fps in continuous “Hi+” mode, and up to 8 fps in continuous “Hi” mode. Maximum fps will depend on camera settings

[v] In JPEG (Extra fine / Fine) or compressed RAW mode

[vi] This function does not track animal eyes

[vii]“Tracking” in the menu. This function does not track animal eyes

[viii] Image Edge desktop application Ver. 2.0 or later is required

[ix] Super 35mm 4K recording results in a slightly narrower angle of view

[x] CIPA standards. Pitch/yaw shake only. Planar T* FE 50mm F1.4 ZA lens. Long exposure NR off

[xi] The Imaging Edge (Remote/Viewer/Edit) desktop application Ver. 2.0 or later is required for compositing. Image compositing may not be successful if camera or subject movement causes blur. Some restrictions apply to flash and other device

[xii]‘Remote’/’Viewer’/’Edit’ version.2.0 will be released in August 2019

[xiii] Only 100 Hz and 120 Hz flicker is detected. Continuous shooting speed may decrease. Flicker-free shooting is not available during silent shooting, BULB exposure, or movie recording

[xiv] Models sold in some countries/regions support IEEE 802.11b/g/n (2.4 GHz) wireless LAN only. 5 GHz communication may be restricted in some countries and regions

[xv] Imaging Edge Mobile version.7.2 will be released in July 2019

[xvi] Imaging Edge Mobile Ver. 7.2 or later is required. “Cnct. during power off” setting in camera must be turned ON and the camera and smartphone must be paired using Bluetooth® technology via the Imaging Edge Mobile application

[xvii] Connect this product to an HDR (HLG) compatible Sony TV via a USB cable when displaying HDR (HLG) movies

[xviii] Sound not recorded. Class 10 or higher SDHC/SDXC card required

[xix] Not guaranteed to be 100% dust and moisture proof

[xx] A battery must be installed in the body when power is being supplied via the USB connector

[xxi] Refer to the Sony support page for details and camera compatibility information https://www.sony.net/dics/b1m/

[xxii] Refer to the Sony support page for details and camera compatibility information


  1. Truly amazing progress but rather than being of major benefit to most I suspect this vast M/Pixel increase race between camera manufacturers may instead prove a negative influence in marketing terms. Maybe even be ‘A Stop the World I want to get off’ moment where for instance many will decide what they already have is more than good enough rather than our being persuaded to join what in digital camera costing terms nowadays is starting to rival the arms race.

  2. I’ve an original A7S (409,000 ISO!) for shooting by moonlight, and an A7RMkII for hi-res and for sensor-stabilised autofocus ..even, as many times mentioned before, with Leica M lenses (by adding a ‘Techart’-brand M-to-FE adapter).

    B-b-but can the soon-to-arrive(?) latest Leica match this newest Sony? Absolutely not, sorry. (Compare the size of the lenses, for example.) Sony’s cutting the ground from beneath all other manufacturers. No wonder Leica’s hiring software engineers ..er, glass is so passé..!

    But no; I won’t be buying one of these. Just as I don’t drive a Porsche (..whoops, sorry Mike!)

  3. Overwhelming specification and totally OTT for my needs. Whether it can produce better still images is debatable. Digital imaging needs a deep pocket to keep up with all the latest developments. I’m just stroking my recently acquired M4-P and looking forward to using it with some slide film 🙂 And need to make more use of my SL 601 and A7SII to justify their costs. However, just out of curiosity, will be reading the first full reviews of the A7R Mk IV 🙂

  4. I have no need for the file size that will roll of that sensor, nor have I for it’s predecessor at 40 odd megapixels.

    I suspect this could be a race to the death of some camera’s and brands.

    For me my X and Df both at 16mp do the job, who needs more?

  5. A remarkable piece of kit and I’m sure for some this will be an essential purchase for their professional needs but I wonder how many fan boys will part with the cash to fuel their ego and never do more than publish resulting images to the web.
    24Mp is still the sweet spot for me, enabling beautiful A3 prints without bringing my computer to a standstill or filling my hard drives too quickly.

  6. I almost despise my A7Rii enough to sell it, but there is just something about the quality of the images it produces (now I’ve got used to the slightly quirky colours) that keeps me coming back to it. The 42Mp sensor also makes using it in APS-C crop (thus expanding the range of my lenses) very workable ‘on the fly’.
    Key bugbears:
    -The loud and annoying shutter (even in electronic 1st curtain). I use the silent shutter a lot.
    -The ridiculously convoluted and incompetently designed menus, with very limited ability to customise and no ‘My Menu’ screen for most used settings. Improvements via firmware updates? Forget it…
    -The practically unusable rear command dial.

    It looks like they’ve sorted the rear dial and the shutter might also be a non-issue now its been redesigned. I hope the menus are better too. The grip looks subtly improved and I like the idea of better wireless connectivity. Video and super-duper focus gizmos are less important to me.

    I can’t say I’d buy one as 61Mp seems over the top to me, but then I felt the same about the 42Mp A7Rii until I saw the results it can produce. However I can’t help thinking that if I was in the market for a camera with this much resolution, I would buy one of the Fuji GF models and learn how to make best use of the physically larger format.

  7. Man, this and a Batis 25mm shot in both full-frame and crop mode…what else would you need? Besides way more file storage capacity?

  8. It’s like buying the Hubble telescope to watch what my neighbor’s cooking for dinner from across the street.

    I don’t want it or need it, but I’m sure in Ye Olde Reflex Inn they will be slapping down 60MP backlit sensors and claiming bragging rights for a few weeks until something else turns up from Canon with 90MP…

  9. ‘Want’ and ‘need’ are two critical terms here. The other term is ‘indigestion’ which is what your computer system will get with 61 Mp. The whole digital camera thing is approaching an endgame anyway as fewer and fewer people buy stand alone cameras. As for people who want to make prints the size of barn doors, the best of luck to you. Fujifilm has already hit 100 Mp, which must be unusable on most domestic computer systems. Sony and Fuji are conglomerates and can afford to play around with cameras that very few people might buy, apart from pub bores and the aforementioned mega printers.



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