Making strides in the video arena, the a7S II Mirrorless Digital Camera from Sony
offers an impressive blend of sensitivity, dynamic range, resolution,
and speed to benefit a versatile multimedia workflow. Revolving around a
full-frame 12.2MP Exmor CMOS sensor, the a7S II is capable of internal
UHD 4K recording at 30 fps with full pixel readout as well as 1080p
recording at up to 120 fps, all in the XAVC S format. For both stills
and video recording, the BIONZ X image processor also pairs with the
sensor to enable expanded sensitivity to ISO 409600, continuous shooting
to 5 fps, and fast intelligent autofocus with low-light sensitivity to
-4 EV. Further enabling working in difficult lighting conditions, 5-axis
SteadyShot INSIDE image stabilization compensates for vertical,
horizontal, pitch, yaw, and roll camera movements for sharper, smoother
handheld recording.
Complementing the 4K recording capabilities is a redeveloped recording
setup, including the ability to utilize S-Log3 Gamma and S-Gamut3 in
addition to S-Log2, for increasing dynamic range values by up to 1300%
to better match high-end post-production workflows. For clearer
monitoring potential, an enhanced Zebra function better supports working
with S-Log gamma settings and a Gamma Display Assist helps to preview
imagery with natural contrast by converting S-Log2 and S-Log3 settings
to the ITU709 gamma for easier on-camera viewing.
The a7S II is also characterized by a compact, yet robust, magnesium
alloy body design that incorporates a high 0.78x-magnification
Tru-Finder OLED electronic viewfinder. With a resolution of 2.36-million
dots and a Zeiss T* anti-reflective coating, this finder benefits
working in a variety of lighting conditions and is capable of previewing
exposure and settings adjustments prior to recording. A rear 3.0"
1,228,800-dot LCD screen is also available, and features a tilting
design to support working from high and low angles. Additionally,
built-in Wi-Fi connectivity with NFC allows you to pair mobile devices
to the camera for wireless sharing and remote camera control.
Full-Frame Exmor Sensor and BIONZ X Image Processor
A 12.2MP full-frame Exmor CMOS sensor and BIONZ X image
processor work together to enable an expansive dynamic range with
minimal noise and notable sensitivity from ISO 100-102400, which is
further expandable to ISO 50-409600. Coupled with the large individual
pixel size the 12.2MP sensor affords, this camera is well-suited to use
in low-light conditions.
The sensor's design also features a new-generation RGB color filter
array, as well as a gapless on-chip lens design. Together, these two
technologies enable truly efficient light-gathering abilities that
further reinforce the low noise, high-sensitivity design. Furthermore,
an anti-reflective coating has also been applied to the seal glass of
the image sensor to minimize surface reflections, glare, and ghosting
for contrast-rich, color-neutral imagery.
The sensor and processor combination also avail a wealth of
performance-related benefits to still shooting, including a Speed
Priority continuous shooting rate of 5 fps, or a 2.5 fps shooting rate
with continuous AF. The Fast Intelligent AF system employs 169 AF
points, which is comprised of 25 contrast-detection points and nine
central AF points that have been split into 16 segments each, in order
to provide both speed and accuracy in low-light conditions down to -4
EV.
Internal UHD 4K Recording and Full Pixel Readout
Internal recording of UHD 4K movies is possible in multiple
frame rates up to 30 fps and, based on the 12.2MP resolution, full pixel
readout is possible that is void of pixel binning for higher quality
imagery with reduced moiré and aliasing. Full HD 1080p recording is also
supported in frame rates up to 120 fps, and both resolutions utilize
the 100 Mbps XAVC S format contained within an MP4 wrapper with 4:2:0
sampling. The high-speed, 120 fps recording also enables 4x and 5x
slow-motion movie recording with the frame rate set to either 30p or
24p.
In addition to high-resolution internal recording, uncompressed HDMI
output also enables the use of an optional external recorder for clean
4K recording with 4:2:2 sampling.
5-Axis SteadyShot INSIDE Image Stabilization
Packed into the svelte a7S II is a 4.5-stop effective 5-axis
SteadyShot INSIDE image stabilization system that compensates for five
different types of camera shake encountered during handheld shooting of
stills and video. This allows users to confidently use any lens, even
adapted lenses, for critical imaging without encountering blur from
camera shake.
For long focal lengths, the system will correct for pitch and yaw
adjustments. Macro and high-magnification imagery, on the other hand,
will benefit from the inclusion of horizontal and vertical shift
compensation. All shooting styles will get usage out of the roll
compensation. All 5 axes of stabilization will function at all times,
even when used with third-party lenses and adapters or lenses with
built-in optical stabilization.
Custom Color Profiles and S-Log3 Gamma
Support is available for the S-Gamut3.Cine/S-Log-3 and
S-Gamut3/S-Log3 profiles that enable up to a 1300% wider dynamic range
for smoother tonal and color gradations, along with enhanced sensitivity
and clarity in shadows and mid-tones. These profiles also lend
themselves to greater compatibility within a professional workflow and
are well-paired to the Cineon Log gamma curve for versatile
post-production grading and color control. The S-Log3 gamma setting also
offers an impressive 14-stop wide dynamic range for greater control
over the highlights and shadows, while the S-Gamut3.Cine profile can be
used to mimic the qualities of scanned negative film with a wide gamut
comparable to the DCI-P3 color space.
In addition to the S-Log3 gamma, the popular S-Log2 settings are also available.
Zebra and Gamma Display Assist
An enhanced Zebra function is ideally suited to working with
S-Log gamma profiles and aids in monitoring exposure values in
high-contrast scenes. Video signal level targets can be set from 0 to
109, and specific ranges can be set to make exposure level adjustments
easier.
In contrast, a Gamma Display Assist function is also available that
displays scenes with natural contrast when recording with S-Log
settings. This function converts imagery to the ITU709 profile for
easier on-camera monitoring.
Timecode and User Bit Settings
The a7S II has multiple timecode recording options to meet
different workflows. It has the standard 'Record Run" mode that only
advances the timecode when recording, as well as "Free Run" timecode
that advances the timecode even when not recording, which can be great
for syncing multiple cameras at live events. It can also record timecode
in both drop frame and non-drop frame modes. When recording internally
the a7S II is also able to output timecode via HDMI.
0.5" 2.36m-Dot XGA OLED Tru-Finder Electronic Viewfinder
With its 4-lens optical system using double-sided aspherical
elements the viewfinder faithfully displays what will appear in your
recording, including the effects of your camera settings. You'll enjoy
rich tonal gradations and improved contrast. High-end features like 100%
frame coverage and a 0.78x magnification enable comfortable and stable
eye-level composition.
In addition to the electronic viewfinder, a rear 3.0" 1,228.8k-dot LCD
monitor has also been incorporated into the design and can tilt 107°
upward or 41° downward to better enable working from high and low
angles.
Built-In Wi-Fi Connectivity with NFC
Built-in Wi-Fi connectivity enables the a7S II to instantly
share imagery to mobile devices for direct sharing online to social
networking, via email, and to cloud storage sites. NFC (Near Field
Communication) is also supported, which allows for one-touch connection
between the camera and compatible mobile devices; no complex set-up is
required. Once connected, the linked mobile device can also display a
live view image on its screen and remotely control the camera's shutter.
Additionally, PlayMemories Camera Apps are also supported via the
built-in Wi-Fi connection, and allow you to personalize the camera's
features depending on specific shooting styles. Apps are available to
suit creating portraits, detailed close-ups, sports, time lapse, motion
shot, and other specific types of imagery.
Other Camera Features
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Cutting down on mechanical vibrations by 50% is the durable
reduced-vibration shutter, which has been tested to 500,000 cycles. An
electronic front curtain can be used to reduce vibrations further.
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A Silent Shutter mode can be used to mute the sound of the shutter for
working in quiet environments. Up to 5 fps shooting is possible with the
silent shutter and the mode can be assigned to a function button for
quick on/off switching.
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The top, front, and rear covers of the body have all been made from magnesium alloy for long-lasting durability.
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Enhanced Eye AF can be used with AF-S and AF-C focusing modes, and
automatically detects and tracks a subject's eye for critical focus.
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The Expand Flexible Spot function can be used with AF Area selections to
intelligently expand the size of your selected focusing spot if it is
not positioned on your subject.
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Focus Magnifier and Peaking functions benefit working with manual focus
and allow you to quickly confirm in-focus portions of an image when
shooting stills or recording video.
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White Balance settings can be fine-tuned for greater personal control over how a scene's colors are represented.
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In addition to the included battery charger, the NP-FW50 battery can also be charged inside the camera via USB.
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Adjustable Picture Profile parameters: Black level, Gamma (Movie, Still,
Cine1-4, ITU709, ITU709 [800%], S-Log2, S-Log3), Black Gamma, Knee,
Color Mode (Movie, Still, Cinema, Pro, ITU709 Matrix, White & Black,
S-Gamut, S-Gamut3.Cine, S-Gamut3), Saturation, Color Phase, Color
Depth, Detail, Copy, and Reset
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Scene Selection modes: Portrait, Landscape, Macro, Sports Action,
Sunset, Night Portrait, Night Scene, Handheld Twilight, and Anti Motion
Blur.
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Picture Effects: Posterization (Color, B/W), Pop Color, Retro Photo,
Partial Color (R, G, B, Y), High Contrast Monochrome, Toy Camera, Soft
High-key, Soft Focus, HDR Painting, Rich-tone Monochrome, Miniature,
Watercolor, and Illustration.
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Creative Styles: Standard, Vivid, Neutral, Clear, Deep, Light, Portrait,
Landscape, Sunset, Night Scene, Autumn Leaves, Black & White, Sepia
(Contrast -3 to +3 steps, Saturation -3 to +3 steps, Sharpness -3 to +3
steps)