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Canon 1D X Mark II vs Sony A7S

The Canon EOS-1D X Mark II and the Sony Alpha A7S are two professional cameras that were announced, respectively, in February 2016 and April 2014. The 1DX Mark II is a DSLR, while the A7S is a mirrorless interchangeable lens camera. Both cameras are equipped with a full frame sensor. The Canon has a resolution of 20 megapixels, whereas the Sony provides 12 MP.

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

Headline Specifications
Canon 1D X Mark II
versus
Sony A7S
Canon 1D X Mark II   Sony A7S
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Sony E mount lenses
20 MP, Full Frame Sensor 12 MP, Full Frame Sensor
4K/60p Video 1080/60p Video
ISO 100-51,200 (50 - 409,600) ISO 100-102,400 (50 - 409,600)
Optical viewfinder Electronic viewfinder (2400k dots)
3.2 LCD, 1620k dots 3.0 LCD, 921k dots
Fixed touchscreen Tilting screen (not touch-sensitive)
16 shutter flaps per second 5 shutter flaps per second
Weathersealed bodyWeathersealed body
1210 shots per battery charge380 shots per battery charge
158 x 168 x 83 mm, 1530 g 127 x 94 x 48 mm, 489 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D X Mark II and the Sony Alpha A7S? 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 Canon 1D X Mark II and the Sony A7S are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Canon 1D X Mark II vs Sony A7S
Compare 1DX Mark II versus A7S top
Comparison 1DX Mark II or A7S rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S is considerably smaller (55 percent) than the Canon 1D X Mark II. Moreover, the A7S is substantially lighter (68 percent) than the 1DX Mark II. 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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (1DX Mark II) and the Sony FE Lens Catalog (A7S). Mirrorless cameras, such as the A7S, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 1DX Mark II gets 1210 shots out of its LP-E19 battery, while the A7S can take 380 images on a single charge of its NP-FW50 power pack. As can be seen in the images above, the 1DX Mark II has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the A7S, Sony provides the VG-C1EM vertical grip as an optional accessory (see here on eBay). The power pack in the A7S can be charged via the USB port, which can be very convenient 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, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999 i
2.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499 i
3.
 
Canon 1D X Mark III 158 mm 168 mm 83 mm 1440 g 2850 Y Jan 2020 6,499 i
4.
 
Canon 6D Mark II 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 1,999 i
5.
 
Canon 5D Mark IV 151 mm 116 mm 76 mm 890 g 900 Y Aug 2016 3,499 i
6.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199 i
7.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
8.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
9.
 
Canon 6D 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099 i
10.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799 i
11.
 
Canon 1Ds Mark III 150 mm 160 mm 80 mm 1385 g 1800 Y Aug 2007 7,999 i
12.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499 i
13.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 2,299 i
14.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 i
15.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699 i
16.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299 i
17.
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A7S was launched at a markedly lower price (by 58 percent) than the 1DX Mark II, which puts it into a different market segment. 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 sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A7S is 1 percent smaller. 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.

Canon 1D X Mark II and Sony A7S sensor measures

With 20MP, the 1DX Mark II offers a higher resolution than the A7S (12MP), but the 1DX Mark II has smaller individual pixels (pixel pitch of 6.57μm versus 8.45μm for the A7S). However, the 1DX Mark II is a somewhat more recent model (by 1 year and 9 months) than the A7S, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.

The resolution advantage of the Canon 1D X Mark II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 1DX Mark II for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Sony A7S are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

The 1DX Mark II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS-1D X Mark II has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-409600. The corresponding ISO settings for the Sony Alpha A7S are ISO 100 to ISO 102400, with the possibility to increase the ISO range to 50-409600.

1DX Mark II versus A7S MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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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.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.53207 88
2.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.23702 87
3.
 
Canon 1D X Mark III Full Frame 20.0 5472 36484K/60p24.214.53248 91
4.
 
Canon 6D Mark II Full Frame 26.0 6240 41601080/60p24.411.92862 85
5.
 
Canon 5D Mark IV Full Frame 30.1 6720 44804K/30p24.813.62995 91
6.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.21135 79
7.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.42381 87
8.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.42308 86
9.
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.12340 82
10.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.82786 82
11.
 
Canon 1Ds Mark III Full Frame 21.0 5616 3744none24.012.01663 80
12.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.32343 88
13.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.52956 93
14.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.32993 85
15.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.22248 90
16.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.12746 95
17.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.62537 91

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 1DX Mark II provides a higher video resolution than the A7S. It can shoot video footage at 4K/60p, while the Sony is limited to 1080/60p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7S has an electronic viewfinder (2400k dots), while the 1DX Mark II has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the 1DX Mark II has a higher magnification than the one of the A7S (0.76x vs 0.71x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 1D X Mark II and Sony A7S along with similar information for a selection of comparators.

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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
1.
 
Canon 1D X Mark IIoptical Y 3.2 1620 fixed Y 1/8000s 16.0 n n
2.
 
Sony A7S2400 n 3.0 921 tilting n 1/8000s 5.0 n n
3.
 
Canon 1D X Mark IIIoptical Y 3.2 2100 fixed Y 1/8000s 20.0 n n
4.
 
Canon 6D Mark IIoptical Y 3.0 1040 swivel Y 1/4000s 6.5 n n
5.
 
Canon 5D Mark IVoptical Y 3.2 1620 fixed Y 1/8000s 7.0 n n
6.
 
Canon 80Doptical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n
7.
 
Canon 5DSoptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
8.
 
Canon 5DS Roptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
9.
 
Canon 6Doptical Y 3.0 1040 fixed n 1/4000s 4.5 n n
10.
 
Canon 1D Xoptical Y 3.2 1040 fixed n 1/8000s 14.0 n n
11.
 
Canon 1Ds Mark IIIoptical Y 3.0 230 fixed n 1/8000s 5.0 n n
12.
 
Nikon D5optical Y 3.2 2359 fixed Y 1/8000s 14.0 n n
13.
 
Nikon D750optical Y 3.2 1229 tilting n 1/4000s 6.0 Y n
14.
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
15.
 
Sony A72400 n 3.0 1230 tilting n 1/8000s 5.0 n n
16.
 
Sony A7R2400 n 3.0 1230 tilting n 1/8000s 4.0 n n
17.
 
Sony RX1Roptional n 3.0 1229 fixed n 1/4000s 5.0 Y n

One feature that is present on the 1DX Mark II, but is missing on the A7S is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

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).

The 1DX Mark II writes its imaging data to Compact Flash or CFast cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The 1DX Mark II features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7S only has one slot.

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 Canon EOS-1D X Mark II and Sony Alpha A7S and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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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
1.
 
Canon 1D X Mark IIYmonomonoYYmini3.0---
2.
 
Sony A7SYstereomonoYYmicro2.0YY-
3.
 
Canon 1D X Mark IIIYmonomonoYYmini3.1Y-Y
4.
 
Canon 6D Mark IIYstereomonoY-mini2.0YYY
5.
 
Canon 5D Mark IVYmonomonoYYmini3.0YY-
6.
 
Canon 80DYstereomonoYYmini2.0YY-
7.
 
Canon 5DSYmonomonoY-mini3.0---
8.
 
Canon 5DS RYmonomonoY-mini3.0---
9.
 
Canon 6DYmonomonoY-mini2.0Y--
10.
 
Canon 1D XYmono-Y-mini2.0---
11.
 
Canon 1Ds Mark IIIYmono----2.0---
12.
 
Nikon D5YstereomonoYYmini3.0---
13.
 
Nikon D750YstereomonoYYmini2.0Y--
14.
 
Sony A7S IIYstereomonoYYmicro2.0YY-
15.
 
Sony A7YstereomonoYYmicro2.0YY-
16.
 
Sony A7RYstereomonoYYmicro2.0YY-
17.
 
Sony RX1RYstereomonoY-mini2.0---

It is notable that the A7S offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 1DX Mark II does not provide wifi capability.

Studio photographers will appreciate that the Canon 1D X Mark II (unlike the A7S) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the 1DX Mark II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 1DX Mark II and the A7S have been discontinued, but can regularly be found used on eBay. The A7S was replaced by the Sony A7S II, while the 1DX Mark II was followed by the Canon 1DX Mark III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.

Review summary

So what conclusions can be drawn? Is the Canon 1D X Mark II better than the Sony A7S or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Canon EOS-1D X Mark II:

  • More detail: Offers more megapixels (20 vs 12MP) with a 29% higher linear resolution.
  • Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.71x).
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1620k vs 921k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (16 vs 5 flaps/sec) to capture the decisive moment.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (1210 versus 380) on a single battery charge.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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: Is somewhat more recent (announced 1 year and 9 months after the A7S).

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Arguments in favor of the Sony Alpha A7S:

  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (127x94mm vs 158x168mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 1041g or 68 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced into a lower priced category (58 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in April 2014).

If the count of relative strengths (bullet points above) is taken as a measure, the 1DX Mark II is the clear winner of the match-up (17 : 11 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

1DX Mark II 17:11 A7S

How about other alternatives? Do the specifications of the Canon 1D X Mark II and the Sony A7S place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 1DX Mark II or the A7S perform in practice. 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 why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D X Mark II....89/1004.5/54.5/5 Feb 2016 5,999 i
2.
 
Sony A7S4/5..86/1004.5/55/5 Apr 2014 2,499 i
3.
 
Canon 1D X Mark III..+ +..4.5/54/5 Jan 2020 6,499 i
4.
 
Canon 6D Mark II4/5+80/1004.5/54/5 Jun 2017 1,999 i
5.
 
Canon 5D Mark IV4.5/5+ +87/1004.5/54.5/5 Aug 2016 3,499 i
6.
 
Canon 80D4/5+ +84/1004.5/54.5/5 Feb 2016 1,199 i
7.
 
Canon 5DS..+83/1004.5/54.5/5 Feb 2015 3,699 i
8.
 
Canon 5DS R5/5+83/1005/54.5/5 Feb 2015 3,699 i
9.
 
Canon 6D5/5+ +83/1004.5/54.5/5 Sep 2012 2,099 i
10.
 
Canon 1D X5/5....4.5/54.5/5 Oct 2011 6,799 i
11.
 
Canon 1Ds Mark III....+ +4.5/5.. Aug 2007 7,999 i
12.
 
Nikon D5....89/1004.5/55/5 Jan 2016 6,499 i
13.
 
Nikon D7505/5+ +90/1004.5/54.5/5 Sep 2014 2,299 i
14.
 
Sony A7S II5/5+..4.5/55/5 Sep 2015 2,999 i
15.
 
Sony A75/5+ +80/1005/55/5 Oct 2013 1,699 i
16.
 
Sony A7R5/5+ +82/1004.5/55/5 Oct 2013 2,299 i
17.
 
Sony RX1R5/5....4/54.5/5 Jun 2013 2,799 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time 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.

Canon 1D X Mark II:
Check Ebay offers
Sony A7S:
Check Ebay offers

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: Canon 1D X Mark II vs Sony A7S

    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 Canon 1D X Mark II Sony A7S
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Sony E mount lenses
    Launch Date February 2016 April 2014
    Launch Price USD 5,999 USD 2,499
    Sensor Specs Canon 1D X Mark II Sony A7S
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Full Frame Sensor
    Sensor Size 36.0 x 24.0 mm 35.8 x 23.9 mm
    Sensor Area 864 mm2 855.62 mm2
    Sensor Diagonal 43.3 mm 43 mm
    Crop Factor 1.0x 1.0x
    Sensor Resolution 20 Megapixels 12 Megapixels
    Image Resolution 5472 x 3648 pixels 4240 x 2832 pixels
    Pixel Pitch 6.57 μm 8.45 μm
    Pixel Density 2.31 MP/cm2 1.40 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 4K/60p Video 1080/60p Video
    ISO Setting 100 - 51,200 ISO 100 - 102,400 ISO
    ISO Boost 50 - 409,600 ISO 50 - 409,600 ISO
    Image Processor DIGIC 6+ (Dual) BIONZ X
    DXO Sensor Quality (score) 88 87
    DXO Color Depth (bits) 24.1 23.9
    DXO Dynamic Range (EV) 13.5 13.2
    DXO Low Light (ISO) 3207 3702
    Screen Specs Canon 1D X Mark II Sony A7S
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.71x
    Viewfinder Resolution 2400k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1620k dots 921k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon 1D X Mark II Sony A7S
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 16 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or CFAST cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    Connectivity Specs Canon 1D X Mark II Sony A7S
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Geotagging GPS built-in no internal GPS
    Body Specs Canon 1D X Mark II Sony A7S
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type LP-E19 NP-FW50
    Battery Life (CIPA)1210 shots per charge380 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 158 x 168 x 83 mm
    (6.2 x 6.6 x 3.3 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 1530 g (54.0 oz) 489 g (17.2 oz)

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