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ADVENTURE BAG MEETS CAMERA CARRYSONY have announced the A7R IV, featuring the
world's first 61-megapixel back-illuminated sensor
(BSI CMOS), 15 stops of dynamic range, 4K UHD
video and 5-axis in-body image stabilisation (IBIS).
As well as the big sensor, the autofocus system gets
a sizable bump over the 7R IV's predecessor, the A7R
III, with the 7R IV capable of shooting full resolution
images at up to 10 fps with continuous AF/AE track-
ing for up to seven seconds in full-frame, full-resolu-
tion (JPEG or RAW), and approx. 21 seconds in APS-
C crop mode, which will still deliver 26.2MP files.
Inside, the BSI CMOS image sensor is completelynew, and offers a reported 15 stops of dynamic range.
If 61MP isn't quite enough for you, the new cam-
era features a pixel shift multi shooting mode that composites
up to 16 full-resolution images to capture 16 separate pixel-
shifted images containing a total of 963.2 million pixels of
data, which are then composited into a 240MP (19008 x 12672
pixel) image. It's worth noting you'll need to Sony’s Imaging
Edge desktop application to do the final composite.
The autofocus system is comprised of 567 focal-plane phase-
detection AF points that cover approximately 74 percent of the
image area, and there are also 425 contrast AF points for extra
precision. The 7R IV also supports Sony's Real-time Eye AF,
available for both animal and human subjects.
Real-time Tracking is available as well, which utilises a
newly developed subject recognition algorithm, and there
is also an anti-flicker shooting mode, which automatically
detects the presence of f luorescent or artificial lighting in a
shooting environment.
The 7R IV offering 4K (3840x2160 pixels), albeit at 8, not10-bit, across the full width of the image sensor, and full pixel
readout without pixel binning in Super 35mm mode.
S-Log 2 and S-Log 3 are available to maximize colour gradingf lexibility, with S-Log 3 offering a total of 14-stops of dynamic
range. Hybrid Log-Gamma (HLG) is also available. In a first,
the 7R IV also features real-time Eye AF for movie shooting.
Sony have also introduced a new digital audio interfacethat maintains a digital signal from microphone to camera.
This is possible thanks to the new ECM-B1M shotgun micro-
phone that features a built-in Analog to Digital converter, and
a new multi-interface hot shoe found only on the 7R IV.
The A7R IV features upgraded dust and moisture resistance,
with additional sealing provided at all body seams, the battery
compartment cover and media slots.
There's also an improved grip, and a number of changes to
the button layout and size: an increase in the size and feedback
for the ‘AF-ON’ button; a new multi-selector joystick design for
improvised control; an exposure compensation dial lock but-
ton; and a redesigned shape and new position for the rear dial.
There's two UHS-II compatible media slots, and camera set-
tings can be saved to, and read from an inserted memory card.
Despite its increased pixel count compared to the Alpha 7R
III, the battery life has been improved with a CIPA measure-
ment of up to 670 still images per change using LCD monitor,
or 530 images with EVF.
Sony has also released a variety of new accessories to compli-
ment the new Alpha 7R IV camera, including a vertical grip
and shotgun microphone.
The new Alpha 7R IV will be available in Australia at the
end of August for $5,699.
Find out more at Sony.com.au. ❂SONY ANNOUNCES HIGH-RESOLUTION
A7R IV WITH 61MP SENSOR