Canon SL2 vs Sony A7
The Canon EOS Rebel SL2 (called Canon 200D in some regions) and the Sony Alpha A7 are two digital cameras that were announced, respectively, in June 2017 and October 2013. The SL2 is a DSLR, while the A7 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (SL2) and a full frame (A7) sensor. Both cameras offer a resolution of 24 megapixels.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel SL2 and the Sony Alpha A7? 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.
An illustration of the physical size and weight of the Canon SL2 and the Sony A7 is provided 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 measures are rounded to the nearest millimeter.
The SL2 can be obtained in two different colors (black, white), while the A7 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 is notably larger (5 percent) than the Canon SL2. Moreover, the A7 is markedly heavier (5 percent) than the SL2. It is noteworthy in this context that the A7 is splash and dust-proof, while the SL2 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 (SL2) and the Sony FE Lens Catalog (A7). Mirrorless cameras, such as the A7, 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 SL2 gets 650 shots out of its LP-E17 battery, while the A7 can take 340 images on a single charge of its NP-FW50 power pack. The power pack in the A7 can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.
|1.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|2.||Sony A7||127 mm||94 mm||48 mm||474 g||340||Y||Oct 2013||1,699|
|3.||Canon SL3||122 mm||93 mm||70 mm||449 g||1070||n||Apr 2019||599|
|4.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449|
|5.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|6.||Canon G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529|
|7.||Canon M6||112 mm||68 mm||45 mm||390 g||295||n||Feb 2017||779|
|8.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499|
|9.||Canon T7i||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749|
|10.||Canon M5||116 mm||89 mm||61 mm||427 g||295||n||Sep 2016||979|
|11.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|12.||Canon SL1||117 mm||91 mm||69 mm||407 g||380||n||Mar 2013||549|
|13.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999|
|14.||Sony A7S||127 mm||94 mm||48 mm||489 g||380||Y||Apr 2014||2,499|
|15.||Sony A7R||127 mm||94 mm||48 mm||465 g||340||Y||Oct 2013||2,299|
|16.||Sony RX1R||113 mm||65 mm||70 mm||482 g||270||n||Jun 2013||2,799|
|17.||Sony RX1||113 mm||65 mm||70 mm||482 g||270||n||Sep 2012||2,799|
|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 SL2 was launched at a markedly lower price (by 68 percent) than the A7, 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.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon SL2 features an APS-C sensor and the Sony A7 a full frame sensor. The sensor area in the A7 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.
In terms of underlying technology, both cameras are build around CMOS sensors.
Even though the A7 has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the A7 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.97μm versus 3.72μm for the SL2), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the SL2 is much more recent (by 3 years and 8 months) than the A7, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
The Canon EOS Rebel SL2 has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 100-51200. The corresponding ISO settings for the Sony Alpha A7 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 A7 offers substantially better image quality than the SL2 (overall score 11 points higher). The advantage is based on 1.2 bits higher color depth, 0.8 EV in additional dynamic range, and 1.1 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|2.||Sony A7||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|6.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|13.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|14.||Sony A7S||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
|15.||Sony A7R||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|16.||Sony RX1R||Full Frame||24.0||6000||4000||1080/60p||25.0||13.6||2537||91|
|17.||Sony RX1||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (1080/60p).
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7 has an electronic viewfinder (2400k dots), while the SL2 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 A7 offers a wider field of view (100%) than the one in the SL2 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7 has a higher magnification (0.71x vs 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon SL2 and Sony A7 in connection with corresponding information for a sample of similar cameras.
|1.||Canon SL2||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|2.||Sony A7||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0||n||n|
|3.||Canon SL3||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|4.||Canon T7||optical||n||3.0 / 920||fixed||n||1/4000s||3.0||Y||n|
|5.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|6.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2||Y||Y|
|7.||Canon M6||optional||n||3.0 / 1040||tilting||Y||1/4000s||9.0||Y||n|
|8.||Canon M100||none||n||3.0 / 1040||tilting||Y||1/4000s||6.1||Y||n|
|9.||Canon T7i||optical||n||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|10.||Canon M5||2360||n||3.2 / 1620||tilting||Y||1/4000s||9.0||Y||n|
|11.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|12.||Canon SL1||optical||n||3.0 / 1040||fixed||Y||1/4000s||4.9||Y||n|
|13.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0||n||Y|
|14.||Sony A7S||2400||n||3.0 / 921||tilting||n||1/8000s||5.0||n||n|
|15.||Sony A7R||2400||n||3.0 / 1230||tilting||n||1/8000s||4.0||n||n|
|16.||Sony RX1R||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0||Y||n|
|17.||Sony RX1||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0||Y||n|
One difference between the cameras concerns the presence of an on-board flash. The SL2 has one, while the A7 does not. While the built-in flash of the SL2 is not very powerful, it can at times be useful as a fill-in light.The SL2 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 A7 does not have a selfie-screen.
The Canon SL2 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The SL2 writes its imaging data to SDXC cards, while the A7 uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 SL2 and Sony Alpha A7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon SL2||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|2.||Sony A7||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|3.||Canon SL3||Y||stereo / mono||Y||-||mini||2.0||Y||-||Y|
|4.||Canon T7||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|5.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|6.||Canon G9 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|7.||Canon M6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|8.||Canon M100||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|9.||Canon T7i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|10.||Canon M5||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|11.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|12.||Canon SL1||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|13.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|14.||Sony A7S||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony A7R||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony RX1R||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|17.||Sony RX1||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the A7 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The SL2 lacks such a headphone port.
Both the SL2 and the A7 have been discontinued, but can regularly be found used on eBay. The A7 was replaced by the Sony A7 II, while the SL2 was followed by the Canon SL2. 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.
So how do things add up? Is there a clear favorite between the Canon SL2 and the Sony A7? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon EOS Rebel SL2:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (650 versus 340) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced into a lower priced category (68 percent cheaper at launch).
- More modern: Reflects 3 years and 8 months of technical progress since the A7 launch.
Advantages of the Sony Alpha A7:
- Better image quality: Scores substantially higher (11 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (0.8 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.1 stops ISO advantage).
- 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 0.54x).
- More detailed LCD: Has a higher resolution rear screen (1230k vs 1040k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- 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.
- More heavily discounted: Has been around for much longer (launched in October 2013).
If the count of individual advantages (bullet points above) is taken as a guide, the A7 is the clear winner of the contest (14 : 10 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.
How about other alternatives? Do the specifications of the Canon SL2 and the Sony A7 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the SL2 or the A7. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major 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.
|1.||Canon SL2||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549|
|2.||Sony A7||5/5||+ +||..||80/100||5/5||5/5||Oct 2013||1,699|
|3.||Canon SL3||..||o||4.5/5||79/100||4/5||4/5||Apr 2019||599|
|4.||Canon T7||..||o||..||..||3.5/5||3.5/5||Feb 2018||449|
|5.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899|
|6.||Canon G9 X Mark II||4/5||..||4/5||75/100||4.5/5||4.5/5||Jan 2017||529|
|7.||Canon M6||..||..||..||80/100||4/5||4/5||Feb 2017||779|
|8.||Canon M100||3/5||+||..||..||4/5||3.5/5||Aug 2017||499|
|9.||Canon T7i||4.5/5||..||3.5/5||80/100||4.5/5||4/5||Feb 2017||749|
|10.||Canon M5||4/5||+||4/5||82/100||4/5||4/5||Sep 2016||979|
|11.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649|
|12.||Canon SL1||4/5||+||..||78/100||4/5||4/5||Mar 2013||549|
|13.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999|
|14.||Sony A7S||4/5||..||..||86/100||4.5/5||5/5||Apr 2014||2,499|
|15.||Sony A7R||5/5||+ +||..||82/100||4.5/5||5/5||Oct 2013||2,299|
|16.||Sony RX1R||5/5||..||..||..||4/5||4.5/5||Jun 2013||2,799|
|17.||Sony RX1||5/5||..||..||79/100||4/5||4.5/5||Sep 2012||2,799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 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.
Specifications: Canon SL2 vs Sony A7
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 Model||Canon SL2||Sony A7|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Sony E mount lenses|
|Launch Date||June 2017||October 2013|
|Launch Price||USD 549||USD 1,699|
|Sensor Specs||Canon SL2||Sony A7|
|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|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.72 μm||5.97 μm|
|Pixel Density||7.22 MP/cm2||2.80 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||1080/60p Video|
|ISO Setting||100 - 25,600 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 51,200 ISO||50 - 51,200 ISO|
|Image Processor||DIGIC 7||BIONZ X|
|DXO Sensor Quality (score)||79||90|
|DXO Color Depth (bits)||23.6||24.8|
|DXO Dynamic Range (EV)||13.4||14.2|
|DXO Low Light (ISO)||1041||2248|
|Screen Specs||Canon SL2||Sony A7|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2400k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1230k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon SL2||Sony A7|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||5 shutter flaps/s||5 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|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||UHS-I||UHS-I|
|Connectivity Specs||Canon SL2||Sony A7|
|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||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Canon SL2||Sony A7|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||650 shots per charge||340 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
122 x 93 x 70 mm
(4.8 x 3.7 x 2.8 in)
127 x 94 x 48 mm
(5.0 x 3.7 x 1.9 in)
|Camera Weight||453 g (16.0 oz)||474 g (16.7 oz)|
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