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How much dynamic range does the Sony A7S offer?

According to measurements carried out by DXO Mark, the sensor in the Sony Alpha A7S provides a maximum of 13.2 EV of dynamic range (DR). DR is defined as the ratio between the highest and lowest brightness a camera can capture. A value of 12 EV or above is considered excellent.

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High dynamic range of a camera sensor is particularly desirable for scenes with a mix of very bright and very dark parts, such as in some landscape photography settings. It helps to avoid that highlights get washed out or that detail in shadows is lost.

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Sensor specs and performance

The table below compares the sensor specs of the Sony A7S to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better). In addition to dynamic range (DXO Landscape), the listing also covers color depth (DXO Portrait) and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.

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Sensor Characteristics
#   Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
2.
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989
3.
 
Sony ZV-E1 Full Frame 12.0 4240 28324K/60p25.414.6318196
4.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
5.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
6.
 
Sony RX1R II Full Frame 42.2 7952 53041080/60p25.813.9320497
7.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
8.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
9.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
10.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791
11.
 
Sony RX1 Full Frame 24.0 6000 40001080/60p25.114.3253493
Note: DXO values in italics represent estimates based on sensor size and age.
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Further information on the sensor in the Sony A7S and the camera's operation can be found in the camera manual.

In the United States, the A7S was initially launched in April 2014 at a price of $2,499.

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Camera to camera comparisons

If you would like to see a side-by-side review with another camera, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications Summary
    Camera Model Sony A7S
    Camera Type Mirrorless system camera
    Camera Lens Sony E mount lenses
    Launch Date April 2014
    Launch Price USD 2 499
    Sensor Specs
    Sensor Technology CMOS
    Sensor Format Full Frame Sensor
    Sensor Size 35.8 x 23.9 mm
    Sensor Area 856 mm2
    Sensor Diagonal 43 mm
    Crop Factor 1.0x
    Sensor Resolution 12 Megapixels
    Image Resolution 4 240 x 2 832 pixels
    Pixel Pitch 8.45 μm
    Pixel Density 1.40 MP/cm2
    Moiré control Anti-Alias filter
    Movie Capability 1080/60p Video
    ISO Setting 100 - 102 400 ISO
    ISO Boost 50 - 409 600 ISO
    Image Processor BIONZ X
    DXO Sensor Quality (score) 87
    DXO Color Depth (bits) 23.9
    DXO Dynamic Range (EV) 13.2
    DXO Low Light (ISO) 3702
    Screen Specs
    Viewfinder Type Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.71x
    Viewfinder Resolution 2400k dots
    Top-Level Screen no Top Display
    LCD Framing Live View
    LCD Size 3.0 inch
    LCD Resolution 921k dots
    LCD Attachment Tilting screen
    V-logging Friendliness No front-flip
    Touch Input No touchscreen
    Shooting Specs
    Focus System Contrast-detect AF
    Manual Focusing AidFocus Peaking
    Maximum Shutter Speed 1/8000s
    Continuous Shooting 5 shutter flaps/s
    Shutter Life Expectancy200 000 actuations
    Silent ShootingElectronic Shutter
    Time Lapse Photographyno Intervalometer
    Fill Flash no On-Board Flash
    Storage Medium MS or SDXC cards
    Single or Dual Card Slots Single card slot
    UHS card support UHS-I
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port micro HDMI
    Microphone Port External MIC port
    Headphone Socket Headphone port
    Wifi Support Wifi built-in
    Near-Field Communication NFC built-in
    Body Specs
    Environmental SealingWeathersealed body
    Battery Type Sony NP-FW50 power pack
    Battery Life (CIPA)380 shots per charge
    In-Camera Charging USB charging
    Body Dimensions 127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 489 g (17.2 oz)

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