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Canon T3i vs Sony A7S

The Canon EOS Rebel T3i (called Canon 600D in some regions) and the Sony Alpha A7S are two digital cameras that were officially introduced, respectively, in February 2011 and April 2014. The T3i is a DSLR, while the A7S is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (T3i) and a full frame (A7S) sensor. The Canon has a resolution of 17.9 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 T3i
versus
Sony A7S
Canon T3i   Sony A7S
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Sony E mount lenses
17.9 MP, APS-C Sensor 12 MP, Full Frame Sensor
1080/30p Video 1080/60p Video
ISO 100-6,400 (100 - 12,800) ISO 100-102,400 (50 - 409,600)
Optical viewfinder Electronic viewfinder (2400k dots)
3.0 LCD, 1040k dots 3.0 LCD, 921k dots
Swivel screen (not touch-sensitive) Tilting screen (not touch-sensitive)
3.7 shutter flaps per second 5 shutter flaps per second
not weather sealedWeathersealed body
440 shots per battery charge380 shots per battery charge
133 x 100 x 80 mm, 570 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 Rebel T3i 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 side-by-side display below illustrates the physical size and weight of the Canon T3i and the Sony A7S. 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 measures are rounded to the nearest millimeter.

Size Canon T3i vs Sony A7S
Compare T3i versus A7S top
Comparison T3i 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 notably smaller (10 percent) than the Canon T3i. Moreover, the A7S is markedly lighter (14 percent) than the T3i. It is noteworthy in this context that the A7S is splash and dust-proof, while the T3i does not feature any corresponding weather-sealing.

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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (T3i) 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 T3i gets 440 shots out of its LP-E8 battery, while the A7S can take 380 images on a single charge of its NP-FW50 power pack. The power pack in the A7S can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 T3i 133 mm 100 mm 80 mm 570 g 440 n Feb 2011 599i
2.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499i
3.
 
Canon SL2 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549i
4.
 
Canon T6s 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649i
5.
 
Canon T5 130 mm 100 mm 78 mm 480 g 500 n Feb 2014 449i
6.
 
Canon SL1 117 mm 91 mm 69 mm 407 g 380 n Mar 2013 549i
7.
 
Canon T5i 133 mm 100 mm 79 mm 580 g 440 n Mar 2013 649i
8.
 
Canon M 109 mm 66 mm 32 mm 298 g 230 n Jul 2012 599i
9.
 
Canon T4i 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849i
10.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449i
11.
 
Canon T2i 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699i
12.
 
Canon T1i 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 799i
13.
 
Nikon Df 144 mm 110 mm 67 mm 760 g 1400 Y Nov 2013 2,749i
14.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999i
15.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999i
16.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699i
17.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299i
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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The T3i was launched at a markedly lower price (by 76 percent) than the A7S, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon T3i features an APS-C sensor and the Sony A7S a full frame sensor. The sensor area in the A7S is 158 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon T3i and Sony A7S sensor measures

Despite having a smaller sensor, the Canon T3i offers a higher resolution of 17.9 megapixels, compared with 12 MP of the Sony A7S. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.31μm versus 8.45μm for the A7S). Moreover, it should be noted that the A7S is much more recent (by 3 years and 1 month) than the T3i, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Canon T3i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T3i for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 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 Canon EOS Rebel T3i has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. 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.

T3i versus A7S MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 A7S offers substantially better image quality than the T3i (overall score 22 points higher). The advantage is based on 1.8 bits higher color depth, 1.7 EV in additional dynamic range, and 2.2 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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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 T3i APS-C 17.9 5184 34561080/30p22.111.579365
2.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
3.
 
Canon SL2 APS-C 24.0 6000 40001080/60p23.613.4104179
4.
 
Canon T6s APS-C 24.0 6000 40001080/30p22.612.091570
5.
 
Canon T5 APS-C 17.9 5184 34561080/30p21.911.372463
6.
 
Canon SL1 APS-C 17.9 5184 34561080/30p21.811.384363
7.
 
Canon T5i APS-C 17.9 5184 34561080/30p21.711.268161
8.
 
Canon M APS-C 17.9 5184 34561080/30p22.111.282765
9.
 
Canon T4i APS-C 17.9 5184 34561080/30p21.711.272262
10.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
11.
 
Canon T2i APS-C 17.9 5184 34561080/30p22.111.578466
12.
 
Canon T1i APS-C 15.1 4752 31681080/20p21.711.566363
13.
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989
14.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
15.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
16.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
17.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7S provides a faster frame rate than the T3i. It can shoot movie footage at 1080/60p, while the Canon is limited to 1080/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7S has an electronic viewfinder (2400k dots), while the T3i 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 viewfinder in the A7S offers a wider field of view (100%) than the one in the T3i (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7S has a higher magnification (0.71x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon T3i, the Sony A7S, and comparable cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/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 T3ioptical n3.0 / 1040 swivel n 1/4000s 3.7 Y n
2.
 
Sony A7S2400 n3.0 / 921 tilting n 1/8000s 5.0 n n
3.
 
Canon SL2optical n3.0 / 1040 swivel Y 1/4000s 5.0 Y n
4.
 
Canon T6soptical Y3.0 / 1040 swivel Y 1/4000s 5.0 Y n
5.
 
Canon T5optical n3.0 / 460 fixed n 1/4000s 3.0 Y n
6.
 
Canon SL1optical n3.0 / 1040 fixed Y 1/4000s 4.9 Y n
7.
 
Canon T5ioptical n3.0 / 1040 swivel Y 1/4000s 5.0 Y n
8.
 
Canon Mnone n3.0 / 1040 fixed Y 1/4000s 4.3 n n
9.
 
Canon T4ioptical n3.0 / 1040 swivel Y 1/4000s 5.0 Y n
10.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0 Y n
11.
 
Canon T2ioptical n3.0 / 1040 fixed n 1/4000s 3.7 Y n
12.
 
Canon T1ioptical n3.0 / 920 fixed n 1/4000s 3.4 Y n
13.
 
Nikon Dfoptical Y3.2 / 921 fixed n 1/4000s 5.5 n n
14.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0 n Y
15.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0 n Y
16.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0 n n
17.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0 n n

One difference between the cameras concerns the presence of an on-board flash. The T3i has one, while the A7S does not. While the built-in flash of the T3i is not very powerful, it can at times be useful as a fill-in light.

The T3i has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping 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).

The T3i writes its imaging data to SDXC cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The A7S supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the T3i cannot take advantage of Ultra High Speed SD cards.

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 Rebel T3i 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
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon T3iYmono / monoY-mini2.0---
2.
 
Sony A7SYstereo / monoYYmicro2.0YY-
3.
 
Canon SL2Ystereo / monoY-mini2.0YYY
4.
 
Canon T6sYstereo / monoY-mini2.0YY-
5.
 
Canon T5Ymono / mono--mini2.0---
6.
 
Canon SL1Ymono / monoY-mini2.0---
7.
 
Canon T5iYstereo / monoY-mini2.0---
8.
 
Canon MYstereo / monoY-mini2.0---
9.
 
Canon T4iYstereo / monoY-mini2.0---
10.
 
Canon T3Ystereo / mono--mini2.0---
11.
 
Canon T2iYstereo / -Y-mini2.0---
12.
 
Canon T1iYmono / mono--mini2.0---
13.
 
Nikon DfY- / ---mini2.0---
14.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
15.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
16.
 
Sony A7Ystereo / monoYYmicro2.0YY-
17.
 
Sony A7RYstereo / monoYYmicro2.0YY-

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 T3i does not provide wifi capability.

Both the T3i and the A7S have been discontinued, but can regularly be found used on eBay. The T3i was replaced by the Canon T4i, while the A7S was followed 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 Canon and Sony websites.

Review summary

So how do things add up? Which of the two cameras – the Canon T3i or the Sony A7S – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Canon EOS Rebel T3i:

  • More detail: Offers more megapixels (17.9 vs 12MP) with a 22% higher linear resolution.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
  • More flexible LCD: Has a swivel 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.
  • Longer lasting: Can take more shots (440 versus 380) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (76 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2011).

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Arguments in favor of the Sony Alpha A7S:

  • Better image quality: Scores substantially higher (22 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.8 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.7 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.2 stops ISO advantage).
  • Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.53x).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (5 vs 3.7 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Less heavy: Has a lower weight (by 81g or 14 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 3 years and 1 month of technical progress since the T3i launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A7S is the clear winner of the contest (20 : 9 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

T3i 09:20 A7S

How about other alternatives? Do the specifications of the Canon T3i 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the T3i and the A7S 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 adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon T3i3/5o..77/1004.5/54.5/5 Feb 2011 599i
2.
 
Sony A7S4/5....86/1004.5/55/5 Apr 2014 2,499i
3.
 
Canon SL24/5+ +4/578/1004.5/54.5/5 Jun 2017 549i
4.
 
Canon T6s5/5+..77/1004.5/54.5/5 Feb 2015 649i
5.
 
Canon T53/5+....4/54.5/5 Feb 2014 449i
6.
 
Canon SL14/5+..78/1004/54/5 Mar 2013 549i
7.
 
Canon T5i......76/1004.5/54.5/5 Mar 2013 649i
8.
 
Canon M3/5+....4/54/5 Jul 2012 599i
9.
 
Canon T4i4/5+ +..77/1004.5/54.5/5 Jun 2012 849i
10.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 449i
11.
 
Canon T2i..+ +..77/1004/54.5/5 Feb 2010 699i
12.
 
Canon T1i..+ +..74/1004.5/54.5/5 Mar 2009 799i
13.
 
Nikon Df4/5....81/1004/54/5 Nov 2013 2,749i
14.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999i
15.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999i
16.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 1,699i
17.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, 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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Canon T3i:
Check Ebay offers
Sony A7S:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon T3i 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 T3i Sony A7S
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Sony E mount lenses
    Launch Date February 2011 April 2014
    Launch Price USD 599 USD 2,499
    Sensor Specs Canon T3i Sony A7S
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.3 x 14.9 mm 35.8 x 23.9 mm
    Sensor Area 332.27 mm2 855.62 mm2
    Sensor Diagonal 26.8 mm 43 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 17.9 Megapixels 12 Megapixels
    Image Resolution 5184 x 3456 pixels 4240 x 2832 pixels
    Pixel Pitch 4.31 μm 8.45 μm
    Pixel Density 5.39 MP/cm2 1.40 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/30p Video 1080/60p Video
    ISO Setting 100 - 6,400 ISO 100 - 102,400 ISO
    ISO Boost 100 - 12,800 ISO 50 - 409,600 ISO
    Image Processor DIGIC 4 BIONZ X
    DXO Sensor Quality (score) 65 87
    DXO Color Depth (bits) 22.1 23.9
    DXO Dynamic Range (EV) 11.5 13.2
    DXO Low Light (ISO) 793 3702
    Screen Specs Canon T3i Sony A7S
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.71x
    Viewfinder Resolution 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 921k dots
    LCD Attachment Swivel screen Tilting screen
    Shooting Specs Canon T3i Sony A7S
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3.7 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Canon T3i Sony A7S
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Canon T3i Sony A7S
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type LP-E8 NP-FW50
    Battery Life (CIPA)440 shots per charge380 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 133 x 100 x 80 mm
    (5.2 x 3.9 x 3.1 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 570 g (20.1 oz) 489 g (17.2 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

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    • Create a hyperlink by copying the text below into your web-project or discussion forum entry.

    Once again, thanks for taking the time to provide feedback. I appreciate it.