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Comparison Sony A7r III body vs Sony A7s II body

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Sony A7r III  body
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Main
5-axis matrix stabilization. 4K video recording. Advanced autofocus system. High resolution OLED viewfinder. Touch screen tilt. Dust and water protection. Compact dimensions and light weight.
Work confidently at high ISOs. Wide dynamic range of the image. 5-axis matrix image stabilization system. In-camera recording of 4K video in XAVC S format with bitrates up to 100 Mbps. Tilt screen.
Camera type"mirrorless" (MILC)"mirrorless" (MILC)
DxOMark rating10085
Sensor
Sensor
CMOS BSI /bionz X processor/
CMOS (CMOS)
Sensor size
full frame /35.9х24 mm/
full frame
Total MP44
Effective MP number4212.2
Maximum image size7952x5304 px4240x2832 px
Light sensitivity (ISO)
100-32000 /in extended mode 50-102400 ISO/
100-102400 /it is possible to expand the ISO range up to 50-409600 in hardware/
Sensor cleaning
RAW format recording
Lens
Mount (bayonet)Sony ESony E
Manual focus
Image stabilization
with matrix shift /can work with optical stabilization of the lens (5 axes will be involved)/
with matrix shift
Photo shooting
Frames per series (RAW)20 шт
HDR
2 control dials
White balance measuring
Exposure compensation± 5 EV, in 1/2 or 1/3 EV steps± 5 EV, in 1/2 or 1/3 EV steps
Auto bracketing
 /± 5 (3.5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)/
 /3 or 5 frames/
Exposure modes
auto
shutter priority
aperture priority
manual mode
auto
shutter priority
aperture priority
manual mode
Metering system
point
centre-weighted
sensor (estimated)
point
centre-weighted
sensor (estimated)
Video recording
Full HD (1080)1920x1080 px 120 fps1920x1080 px 120 fps
Ultra HD (4K)3840x2160 px 30 fps3840x2160 px 30 fps
File recording formatsMPEG-4, AVCHD, XAVC SAVCHD, MPEG-4
Manual video focus
Maximum video length
 
 
time limit /30 min/
memory limit
Connection ports
HDMI v 1.4
headphone Jack
microphone Jack
HDMI
headphone Jack
microphone Jack
Focus
Autofocus modes
one shot
tracking
in face
one shot
tracking
in face
Focus points
425 шт /399 phase/
169 шт
Touch focus
Contour enhancement
Viewfinder and shutter
Viewfinder
electronic /OLED, 3700K pixels/
electronic
Viewfinder crop0.78 x0.78 x
Frame coverage100 %100 %
Shutter speed30 -1/8000 с30 -1/8000 с
Continuous shooting10 fps5 fps
Shutter typemechanicalmechanical
Screen
Screen size3 ''3 ''
Screen resolution1440 thousand pixels1230 thousand pixels
Touch screen
Rotary display
Memory and communications
2 card slots
Memory cards typesSD, SDHC, SDXC, MemoryStickSD, SDHC, SDXC, MemoryStick
Communications
Wi-Fi 4 (802.11n)
NFC
smartphone control
Wi-Fi
NFC
smartphone control
Flash
Built-in flash
External flash connect
flash X-sync1/250 с
Power source
Power source
battery
battery
Battery modelNP-FZ100NP-FW50, VG-C1EM
Battery capacity1080 mAh
Shots per charge650 шт370 шт
General
Charger modelBC-TRW, BC-QM1
Console/synchronizer modelRM-VPR1, RMT-DSLR2
Protectiondustproof, waterproofdustproof, waterproof
Dimensions (WxHxD)127х96х74 mm127х96х60 mm
Weight657 g627 g
Color
Added to E-Catalogoctober 2017september 2015

DxOMark rating

The result shown by the camera in the DxOMark ranking.

DxOMark is one of the most popular and respected resources for expert camera testing. According to the test results, the camera receives a certain number of points; The more points, the higher the final score.

Sensor

— CCD (CCD). Abbreviation for Charge-Coupled Device. In such sensors, information is read from the photosensitive element according to the “line at a time” principle — an electronic signal is output to the image processor in the form of separate lines (there is also a “frame at a time” variant). In general, such matrices have good characteristics, but they are more expensive than CMOS. In addition, they are poorly suited for some specific conditions — for example, shooting with point light sources in the frame — which is why you have to use various additional technologies in the camera, which also affect the cost.

— CMOS (CMOS). The main advantages of CMOS matrices are ease of manufacture, low cost and power consumption, more compact dimensions than those of CCDs, and the ability to transfer a number of functions (focus, exposure metering, etc.) directly to the sensor, thus reducing the dimensions of the camera. In addition, the camera processor can read the entire image from such a matrix at once (rather than line by line, as in CCD); this avoids distortion when shooting fast-moving objects. The main disadvantage of CMOS is the increased possibility of noise, especially at high ISO values.

— CMOS (CMOS) BSI. BSI is an abbreviation for the English phrase "Backside Illumination". This is the name of "inverted" CMOS sensors, the light on which does not penetrate from the side of the photodiodes, but from the back of the matrix (from the side of the subst...rate). With this implementation, the photodiodes receive more light, since it is not blocked by other elements of the image sensor. As a result, back-illuminated sensors boast high light sensitivity, which allows you to create images of better quality with less noise when shooting in low light conditions. BSI CMOS sensors require less light to properly expose a photo. In production, back-illuminated sensors are more expensive than traditional CMOS sensors.

— LiveMOS. A variety of matrices made using the technology of metal oxide semiconductors (MOS, MOS — Metal-Oxide Semiconductor). Compared to CMOS sensors, it has a simplified design, which provides less tendency to overheat and, as a result, a lower noise level. It is well suited for the "live" viewing mode (viewing in real time) of the image from the matrix on the screen or in the camera's viewfinder, which is why it received the word "Live" in the title. They also feature high data transfer rates.

Total MP

The total number of individual light sensitive dots (pixels) provided in the camera's sensor. Denoted in megapixels - millions of pixels.

The total number of MPs, as a rule, is greater than the number of megapixels from which the frame is directly built (for more details, see "Effective number of MPs"). This is due to the presence of service areas on the matrix. In general, this parameter is more of a reference than practically significant: a larger total number of MPs with the same size and effective resolution means a slightly smaller size of each pixel, and, accordingly, an increased likelihood of noise (especially at high ISO values).

Effective MP number

The number of pixels (megapixels) of the matrix directly involved in the construction of the image, in fact — the number of points from which the captured image is built. Some manufacturers, in addition to this parameter, also indicate the total number of MPs, taking into account the service areas of the matrix. However, it is the effective number of MPs that is considered the main indicator — it is this that directly affects the maximum resolution of the resulting image (see “Maximum image size”).

A megapixel is 1 million pixels. Numerous megapixels ensures high resolution of the captured photos, but is not a guarantee of high-quality images — much also depends on the size of the sensor, its light sensitivity (see the relevant glossary items), as well as hardware and software image processing tools used in the camera. Note that for small matrices, high resolution can sometimes be more of an evil than a blessing — such sensors are very prone to the appearance of noise in the image.

Maximum image size

The maximum size of photos taken by the camera in normal (non-panoramic) mode. In fact, this paragraph indicates the highest resolution of photography — in pixels vertically and horizontally, for example, 3000x4000. This indicator directly depends on the resolution of the matrix: the number of dots in the image cannot exceed the effective number of megapixels (see above). For example, for the same 3000x4000, the matrix must have an effective resolution of at least 3000*4000 = 12 million dots, that is, 12 MP.

Theoretically, the larger the size of the photo, the more detailed the image, the more small details can be conveyed on it. At the same time, the overall image quality (including the visibility of fine details) depends not only on resolution, but also on a number of other technical and software factors; see "Effective MP number" for more details.

Light sensitivity (ISO)

The sensitivity range of a digital camera matrix. In digital photography, light sensitivity is expressed in the same ISO units as in film photography; however, unlike film, the light sensitivity of the sensor in a digital camera can be changed, which gives you more options for adjusting shooting parameters. High maximum light sensitivity is important if you have to use a lens with a low aperture (see Aperture), as well as when shooting dimly lit scenes and fast-moving objects; in the latter case, high ISO allows you to use low shutter speeds, which minimizes image blur. However, note that with an increase in the value of the applied ISO, the level of noise in the resulting images also increases.

Frames per series (RAW)

The highest number of shots the camera can capture “in one shot” when shooting in RAW format continuously (see “Recording in RAW Format”).

The technical features of modern digital cameras are such that during continuous shooting, photos have to be recorded in a special buffer, and only then, after the end of the series, they can be transferred to a memory card. This buffer has a limited size, so the number of frames in one series is also limited. At the same time, we note that this indicator is usually indicated for shooting at the highest possible resolution (see "Maximum image size"); at lower resolutions, the volume of each image is reduced, and the number of frames in the series may be more than stated in the specifications.

RAW images take up more space and require more processing power than "finished" JPEGs. Therefore, the number of frames in a series of this format is usually lower than that of JPEG. However, there are exceptions — usually these are cameras that have two separate buffers (for RAW and JPEG).

HDR

Camera support for HDR.

HDR stands for High Dynamic Range. The main application of this technology is shooting scenes with significant differences in illumination, when there are both very bright and very dark areas in the frame. The features of modern digital photography are such that in the normal shooting mode, only a rather narrow range of brightness can be correctly processed; as a result, with a large difference in illumination, the image contains either too dark or overexposed fragments. HDR avoids this phenomenon: in this mode, the camera takes several shots with different exposure settings, and then glues them together in such a way as to reduce the brightness in bright places and increase in dark places. This allows you to shoot, for example, landscapes against the backdrop of a bright sunset sky, the interiors of dimly lit buildings with bright windows, etc. In addition, HDR can also be used as an artistic technique — to give the picture an unusual colour scheme.

Note that this effect can also be achieved using post-processing in a graphics editor; however, using the camera is much more convenient.

2 control dials

The presence of two control dials in the design of the camera.

This design feature makes it easier to control the camera and change settings on the fly: additional operating parameters are transferred to the second disk, and turning it to the desired position is easier and faster than “digging” in the on-screen menu items. This feature is found mainly in semi-professional and professional cameras, which involve frequent use of manual shooting mode.
Sony A7r III often compared
Sony A7s II often compared