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Sony A7S vs A99 II

The Sony Alpha A7S and the Sony Alpha ALT-A99 II are two professional cameras that were announced, respectively, in April 2014 and September 2016. The A7S is a mirrorless interchangeable lens camera, while the A99 II is a DSLR. Both cameras are equipped with a full frame sensor. The A7S has a resolution of 12 megapixels, whereas the A99 II provides 42.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Sony A7S   VS Sony A99 II
Sony A7S Sony A99 II
Mirrorless system camera Digital single lens reflex
Sony E mount lenses Sony A mount lenses
12 MP, Full Frame Sensor 42.2 MP, Full Frame Sensor
1080/60p Video 4K/30p Video
ISO 100-102400 (50-409600) ISO 100-25600
Electronic viewfinder (2400k dots) Electronic viewfinder (2400k dots)
3.0" LCD, 921k dots 3.0" LCD, 1229k dots
Tilting screen (no touchscreen) Fully flexible screen (no touchscreen)
5 shutter flaps per second 12 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
380 shots per battery charge490 shots per battery charge
127 x 94 x 48 mm, 489 g 143 x 104 x 76 mm, 849 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A7S and the Sony Alpha ALT-A99 II? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

The physical size and weight of the Sony A7S and the Sony A99 II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Sony A7S vs Sony A99 II
Compare A7S versus A99 II top
Comparison A7S or A99 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A99 II is notably larger (25 percent) than the Sony A7S. Moreover, the A99 II is substantially heavier (74 percent) than the A7S. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the A7S gets 380 shots out of its NP-FW50 battery, while the A99 II can take 490 images on a single charge of its NP-FM500H power pack. The power pack in the A7S can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Sony A7S» 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499iSony A7S
 
Sony A99 II« 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 iSony A99 II
 
Canon 5DS« » 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 iCanon 5DS
 
Nikon D750« » 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 2,299iNikon D750
 
Nikon Df« » 144 mm 110 mm 67 mm 760 g 1400 Y Nov 2013 2,749 iNikon Df
 
Panasonic GH4« » 133 mm 93 mm 84 mm 560 g 500 Y Feb 2014 1,499iPanasonic GH4
 
Sony A7R III« » 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199iSony A7R III
 
Sony A6300« » 120 mm 67 mm 49 mm 404 g 400 Y Feb 2016 999iSony A6300
 
Sony A7R II« » 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199iSony A7R II
 
Sony A7S II« » 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 iSony A7S II
 
Sony A7 II« » 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999iSony A7 II
 
Sony A7« » 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699iSony A7
 
Sony A7R« » 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299iSony A7R
 
Sony RX1R« » 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799iSony RX1R
 
Sony A99« » 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799iSony A99
 
Sony A900« » 156 mm 117 mm 82 mm 895 g 880 Y Sep 2008 2,999iSony A900
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The A7S was launched at a somewhat lower price (by 22 percent) than the A99 II, which makes it more attractive for photographers on a tight budget. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

 

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A99 II is 1 percent bigger. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony A7S and Sony A99 II sensor measures

With 42.2MP, the A99 II offers a higher resolution than the A7S (12MP), but the A99 II has smaller individual pixels (pixel pitch of 4.52μm versus 8.45μm for the A7S). Yet, the A99 II is a much more recent model (by 2 years and 5 months) than the A7S, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A99 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A99 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A99 II for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inch or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inch or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inch or 67.3 x 44.9 cm. The corresponding values for the Sony A7S are 21.2 x 14.2 inch or 53.8 x 36 cm for good quality, 17 x 11.3 inch or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inch or 35.9 x 24 cm for excellent quality prints.

The A99 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Sony Alpha A7S has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 50-409600. The corresponding ISO settings for the Sony Alpha ALT-A99 II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.

A7S versus A99 II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the A99 II has a markedly higher DXO score than the A7S (overall score 5 points higher), which will translate into better image quality. The advantage is based on 1.5 bits higher color depth, 0.2 EV in additional dynamic range, and 0.7 stops of reduced low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287Sony A7S
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 II
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187Canon 5DS
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693Nikon D750
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989Nikon Df
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.879174Panasonic GH4
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
 
Sony A6300 APS-C 24.0 6000 40004K/30p24.413.7143785Sony A6300
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890Sony A7
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695Sony A7R
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791Sony RX1R
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589Sony A99
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179Sony A900

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A99 II provides a better video resolution than the A7S. It can shoot movie footage at 4K/30p, while the A7S is limited to 1080/60p.

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The A7S and the A99 II are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2400k dots. The following table reports on some other key feature differences and similarities of the Sony A7S, the Sony A99 II, and comparable cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Sony A7S2400 n 3.0 921 tilting n 1/8000s 5.0 n n Sony A7S
 
Sony A99 II2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y Sony A99 II
 
Canon 5DSoptical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS
 
Nikon D750optical Y 3.2 1229 tilting n 1/4000s 6.0 Y n Nikon D750
 
Nikon Dfoptical Y 3.2 921 fixed n 1/4000s 5.5 n n Nikon Df
 
Panasonic GH42359 n 3.0 1036 swivel Y 1/8000s 12.0 Y n Panasonic GH4
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R III
 
Sony A63002359 n 3.0 922 tilting n 1/4000s 11.0 Y n Sony A6300
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7R II
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7S II
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y Sony A7 II
 
Sony A72400 n 3.0 1230 tilting n 1/8000s 5.0 n n Sony A7
 
Sony A7R2400 n 3.0 1230 tilting n 1/8000s 4.0 n n Sony A7R
 
Sony RX1Roptional n 3.0 1229 fixed n 1/4000s 5.0 Y n Sony RX1R
 
Sony A992359 Y 3.0 1229 full-flex n 1/8000s 6.0 n Y Sony A99
 
Sony A900optical Y 3.0 922 fixed n 1/8000s 5.0 n Y Sony A900

One feature that differentiates the A99 II and the A7S is in-body image stabilization (IBIS). The A99 II reduces the risk of handshake-induced blur with all attached lenses, while the A7S has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

The A99 II has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the A7S does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A7S is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

Concerning the storage of imaging data, both the A7S and the A99 II write their files to SDXC or Memory Stick PRO Duo cards. The A99 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7S only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

 

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Sony Alpha A7S and Sony Alpha ALT-A99 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Sony A7SYstereomonoYYmicro2.0YY-Sony A7S
 
Sony A99 IIYstereomonoYYmicro2.0YYYSony A99 II
 
Canon 5DSYmonomonoY-mini3.0---Canon 5DS
 
Nikon D750YstereomonoYYmini2.0Y--Nikon D750
 
Nikon DfYnonenone--mini2.0---Nikon Df
 
Panasonic GH4YstereomonoYYmicro2.0YY-Panasonic GH4
 
Sony A7R IIIYstereomonoYYmicro3.1YYYSony A7R III
 
Sony A6300YstereomonoY-micro2.0YY-Sony A6300
 
Sony A7R IIYstereomonoYYmicro2.0YY-Sony A7R II
 
Sony A7S IIYstereomonoYYmicro2.0YY-Sony A7S II
 
Sony A7 IIYstereomonoYYmicro2.0YY-Sony A7 II
 
Sony A7YstereomonoYYmicro2.0YY-Sony A7
 
Sony A7RYstereomonoYYmicro2.0YY-Sony A7R
 
Sony RX1RYstereomonoY-mini2.0---Sony RX1R
 
Sony A99YstereomonoYYmini2.0---Sony A99
 
Sony A900Ynonenone--mini2.0---Sony A900

Studio photographers will appreciate that the Sony A99 II (unlike the A7S) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The A99 II is a recent model that features in the current product line-up of Sony. In contrast, the A7S has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the A7S was succeeded by the Sony A7S II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony website.

Review summary

So what is the bottom line? Is there a clear favorite between the Sony A7S and the Sony A99 II? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.


Reasons to prefer the Sony Alpha A7S:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better low-light sensitivity: Requires less light for good images (0.7 stops ISO advantage).
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (127x94mm vs 143x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 360g or 42 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • More affordable: Was introduced into a lower priced segment (22 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in April 2014).


Arguments in favor of the Sony Alpha ALT-A99 II:

  • More detail: Has more megapixels (42.2 vs 12MP), which boosts linear resolution by 87%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores markedly higher (5 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.5 bits more color depth).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.71x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 921k dots).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 5 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (490 versus 380) out of a single battery charge.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Reflects 2 years and 5 months of technical progress since the A7S launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A99 II is the clear winner of the contest (18 : 8 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

A7S 08:18 A99 II

How about other alternatives? Do the specifications of the Sony A7S and the Sony A99 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the A7S and the A99 II in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Review Scores
  Camera
Model
cam
era
  labs  
dp
re
  view  
e
photo
  zine  
ima
ging
resource
photo
graphy
  blog  
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Sony A7S..86/1004.5/54.5/55/5 Apr 2014 2,499iSony A7S
 
Sony A99 II..85/1004.5/54.5/54.5/5 Sep 2016 3,199 iSony A99 II
 
Canon 5DS+83/1004.5/55/54.5/5 Feb 2015 3,699 iCanon 5DS
 
Nikon D750+ +90/1004.5/55/54.5/5 Sep 2014 2,299iNikon D750
 
Nikon Df..81/1004/54/54/5 Nov 2013 2,749 iNikon Df
 
Panasonic GH4+ +85/1005/55/55/5 Feb 2014 1,499iPanasonic GH4
 
Sony A7R III+ +90/1004.5/55/55/5 Oct 2017 3,199iSony A7R III
 
Sony A6300+85/1005/55/55/5 Feb 2016 999iSony A6300
 
Sony A7R II+ +90/1005/54.5/55/5 Jun 2015 3,199iSony A7R II
 
Sony A7S II+..4.5/55/55/5 Sep 2015 2,999 iSony A7S II
 
Sony A7 II+82/1004.5/55/55/5 Nov 2014 1,999iSony A7 II
 
Sony A7+ +80/1005/54.5/55/5 Oct 2013 1,699iSony A7
 
Sony A7R+ +82/1004.5/55/55/5 Oct 2013 2,299iSony A7R
 
Sony RX1R....4/5o4.5/5 Jun 2013 2,799iSony RX1R
 
Sony A99..84/1004.5/5o4.5/5 Sep 2012 2,799iSony A99
 
Sony A900+ ++ +4.5/54/55/5 Sep 2008 2,999iSony A900
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Sony A7S:
Check Ebay offers
Sony A99 II:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Sony A7S vs Sony A99 II

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Sony A7S Sony A99 II
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Sony E mount lenses Sony A mount lenses
    Launch Date April 2014 September 2016
    Launch Price USD 2499 USD 3199
    Sensor Specs Sony A7S Sony A99 II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Full Frame Sensor Full Frame Sensor
    Sensor Size 35.8 x 23.9 mm 35.9 x 24.0 mm
    Sensor Area 855.62 mm2 861.6 mm2
    Sensor Diagonal 43 mm 43.2 mm
    Crop Factor 1.0x 1.0x
    Sensor Resolution 12 Megapixels 42.2 Megapixels
    Image Resolution 4240 x 2832 pixels 7952 x 5304 pixels
    Pixel Pitch 8.45 μm 4.52 μm
    Pixel Density 1.40 MP/cm2 4.90 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/60p Video 4K/30p Video
    ISO Setting 100-102400 ISO 100-25600 ISO
    ISO Boost 50-409600 ISO 50-25600 ISO
    Image Processor BIONZ X BIONZ X
    DXO Sensor Quality (score) 87 92
    DXO Color Depth (bits) 23.9 25.4
    DXO Dynamic Range (EV) 13.2 13.4
    DXO Low Light (ISO) 3702 2317
    Screen Specs Sony A7S Sony A99 II
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.71x 0.78x
    Viewfinder Resolution 2400k dots 2400k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 921k dots 1229k dots
    LCD Attachment Tilting screen Fully flexible screen
    Shooting Specs Sony A7S Sony A99 II
    Autofocus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000/s 1/8000/s
    Continuous Shooting 5 shutter flaps/s 12 shutter flaps/s
    Electronic ShutterYESno E-Shutter
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium MS or SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I UHS-I
    Connectivity Specs Sony A7S Sony A99 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Sony A7S Sony A99 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type NP-FW50 NP-FM500H
    Battery Life (CIPA)380 shots per charge490 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    143 x 104 x 76 mm
    (5.6 x 4.1 x 3.0 in)
    Camera Weight 489 g (17.2 oz) 849 g (29.9 oz)

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