Canon 7D vs SL3
The Canon EOS 7D and the Canon EOS Rebel SL3 (labelled Canon 250D in some countries) are two digital cameras that were announced, respectively, in September 2009 and April 2019. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 7D has a resolution of 17.9 megapixels, whereas the SL3 provides 24 MP.
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 7D and the Canon EOS Rebel SL3? 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.
The physical size and weight of the Canon 7D and the Canon SL3 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.
The SL3 can be obtained in two different colors (black, white), while the 7D 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 Canon SL3 is considerably smaller (31 percent) than the Canon 7D. Moreover, the SL3 is substantially lighter (48 percent) than the 7D. It is worth mentioning in this context that the 7D is splash and dust resistant, while the SL3 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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Canon EF Lens Catalog.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Canon 7D||148 mm||111 mm||74 mm||860 g||800||Y||Sep 2009||1,699||ebay.com|
|2.||Canon SL3||122 mm||93 mm||70 mm||449 g||1070||n||Apr 2019||599||amazon.com|
|3.||Canon T8i||131 mm||103 mm||76 mm||515 g||800||n||Feb 2020||749||amazon.com|
|4.||Canon M50 Mark II||116 mm||88 mm||59 mm||387 g||305||n||Oct 2020||599||amazon.com|
|5.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449||amazon.com|
|6.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899||ebay.com|
|7.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549||ebay.com|
|8.||Canon 7D II||149 mm||112 mm||78 mm||910 g||670||Y||Sep 2014||1,799||ebay.com|
|9.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199||ebay.com|
|10.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399||ebay.com|
|11.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699||ebay.com|
|12.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799||ebay.com|
|13.||Canon 5D Mark II||152 mm||114 mm||75 mm||850 g||850||Y||Sep 2008||3,499||ebay.com|
|14.||Canon 50D||146 mm||108 mm||74 mm||822 g||800||Y||Aug 2008||1,299||ebay.com|
|15.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399||ebay.com|
|16.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499||ebay.com|
|17.||Nikon D7000||132 mm||105 mm||77 mm||780 g||1050||Y||Sep 2010||1,499||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The SL3 was launched at a markedly lower price (by 65 percent) than the 7D, 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. 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. 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 associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.6. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
While the two cameras under review share the same sensor size, the SL3 offers a higher resolution of 24 megapixels, compared with 17.9 MP of the 7D. This megapixels advantage translates into a 16 percent gain in linear resolution. On the other hand, these sensor specs imply that the SL3 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.72μm versus 4.31μm for the 7D). However, it should be noted that the SL3 is much more recent (by 9 years and 7 months) than the 7D, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.
The resolution advantage of the Canon SL3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SL3 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon 7D are 25.9 x 17.3 inches or 65.8 x 43.9 cm for good quality, 20.7 x 13.8 inches or 52.7 x 35.1 cm for very good quality, and 17.3 x 11.5 inches or 43.9 x 29.3 cm for excellent quality prints.
The SL3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS 7D 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 Canon EOS Rebel SL3 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 100-51200.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
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"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|4.||Canon M50 Mark II||APS-C||24.0||6000||4000||4K/24p||24.0||13.6||1939||83|
|8.||Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70|
|13.||Canon 5D Mark II||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79|
|Note: DXO values in italics represent estimates based on sensor size and age.|
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 SL3 provides a better video resolution than the 7D. It can shoot movie footage at 4K/25p, while the 7D is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 7D and the SL3 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the 7D offers a wider field of view (100%) than the one in the SL3 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 7D has a higher magnification (0.63x vs 0.54x), 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 7D, the Canon SL3, and comparable cameras.
|1.||Canon 7D||optical||Y||3.0 / 920||fixed||n||1/8000s||8.0/s||Y||n|
|2.||Canon SL3||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|3.||Canon T8i||optical||n||3.0 / 1040||swivel||Y||1/4000s||7.5/s||Y||n|
|4.||Canon M50 Mark II||2360||n||3.0 / 1040||swivel||Y||1/4000s||10.0/s||Y||n|
|5.||Canon T7||optical||n||3.0 / 920||fixed||n||1/4000s||3.0/s||Y||n|
|6.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|7.||Canon SL2||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|8.||Canon 7D II||optical||Y||3.0 / 1040||fixed||n||1/8000s||10.0/s||Y||n|
|9.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|10.||Canon 60D||optical||Y||3.0 / 1040||swivel||n||1/8000s||5.3/s||Y||n|
|11.||Canon T2i||optical||n||3.0 / 1040||fixed||n||1/4000s||3.7/s||Y||n|
|12.||Canon T1i||optical||n||3.0 / 920||fixed||n||1/4000s||3.4/s||Y||n|
|13.||Canon 5D Mark II||optical||Y||3.0 / 920||fixed||n||1/8000s||3.9/s||n||n|
|14.||Canon 50D||optical||Y||3.0 / 920||fixed||n||1/8000s||6.3/s||Y||n|
|15.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0/s||Y||n|
|16.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0/s||Y||n|
|17.||Nikon D7000||optical||Y||3.0 / 921||fixed||n||1/8000s||6.0/s||Y||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that is present on the 7D, but is missing on the SL3 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 SL3 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 7D does not have a selfie-screen.
The Canon SL3 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 7D writes its imaging data to Compact Flash cards, while the SL3 uses SDXC cards.
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 7D and Canon EOS Rebel SL3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 7D||Y||mono / -||Y||-||mini||2.0||-||-||-|
|2.||Canon SL3||Y||stereo / mono||Y||-||mini||2.0||Y||-||Y|
|3.||Canon T8i||Y||stereo / mono||Y||-||mini||2.0||Y||-||Y|
|4.||Canon M50 Mark II||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|5.||Canon T7||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|6.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|7.||Canon SL2||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|8.||Canon 7D II||Y||stereo / mono||Y||Y||mini||3.0||-||-||-|
|9.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|10.||Canon 60D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|11.||Canon T2i||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|12.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|13.||Canon 5D Mark II||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|14.||Canon 50D||Y||- / -||-||-||mini||2.0||-||-||-|
|15.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|16.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|17.||Nikon D7000||Y||mono / mono||Y||-||mini||2.0||-||-||-|
It is notable that the SL3 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 7D does not provide wifi capability.
Studio photographers will appreciate that the Canon 7D (unlike the SL3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The SL3 is a recent model that features in the current product line-up of Canon. In contrast, the 7D has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the 7D was succeeded by the Canon 7D Mark II. Further information on the features and operation of the 7D and SL3 can be found, respectively, in the Canon 7D Manual (free pdf) or the online Canon SL3 Manual.
So what conclusions can be drawn? Which of the two cameras – the Canon 7D or the Canon SL3 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS 7D:
- 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 (0.63x vs 0.54x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (8 vs 5 flaps/sec) to capture the decisive moment.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been available for much longer (launched in September 2009).
Reasons to prefer the Canon EOS Rebel SL3:
- More detail: Has more megapixels (24 vs 17.9MP), which boosts linear resolution by 16%.
- Better video: Provides higher definition movie capture (4K/25p vs 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 920k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- 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.
- More compact: Is smaller (122x93mm vs 148x111mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 411g or 48 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (1070 versus 800) out of a single battery charge.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced into a lower priced category (65 percent cheaper at launch).
- More modern: Reflects 9 years and 7 months of technical progress since the 7D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the SL3 is the clear winner of the contest (15 : 8 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.
How about other alternatives? Do the specifications of the Canon 7D and the Canon SL3 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 7D or the SL3 perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is where reviews by experts come in. 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 7D||5/5||+ +||..||84/100||4.5/5||4.5/5||Sep 2009||1,699||ebay.com|
|2.||Canon SL3||4/5||o||4.5/5||79/100||4/5||4/5||Apr 2019||599||amazon.com|
|3.||Canon T8i||4.5/5||+||3/5||80/100||4/5||3.5/5||Feb 2020||749||amazon.com|
|4.||Canon M50 Mark II||4/5||..||4/5||..||4.5/5||3.5/5||Oct 2020||599||amazon.com|
|5.||Canon T7||..||o||3.5/5||..||3.5/5||3.5/5||Feb 2018||449||amazon.com|
|6.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899||ebay.com|
|7.||Canon SL2||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549||ebay.com|
|8.||Canon 7D II||4.5/5||+||3.5/5||84/100||4/5||4.5/5||Sep 2014||1,799||ebay.com|
|9.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199||ebay.com|
|10.||Canon 60D||5/5||+||..||79/100||4/5||4.5/5||Aug 2010||1,399||ebay.com|
|11.||Canon T2i||..||+ +||..||77/100||4/5||4.5/5||Feb 2010||699||ebay.com|
|12.||Canon T1i||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799||ebay.com|
|13.||Canon 5D Mark II||4/5||91/100||..||79/100||4/5||..||Sep 2008||3,499||ebay.com|
|14.||Canon 50D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2008||1,299||ebay.com|
|15.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399||ebay.com|
|16.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499||ebay.com|
|17.||Nikon D7000||4/5||..||..||80/100||4.5/5||4.5/5||Sep 2010||1,499||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Canon 7D vs Canon SL3
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 7D||Canon SL3|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||September 2009||April 2019|
|Launch Price||USD 1,699||USD 599|
|Sensor Specs||Canon 7D||Canon SL3|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||22.3 x 14.9 mm|
|Sensor Area||332.27 mm2||332.27 mm2|
|Sensor Diagonal||26.8 mm||26.8 mm|
|Sensor Resolution||17.9 Megapixels||24 Megapixels|
|Image Resolution||5184 x 3456 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.31 μm||3.72 μm|
|Pixel Density||5.39 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||4K/25p Video|
|ISO Setting||100 - 6,400 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 12,800 ISO||100 - 51,200 ISO|
|Image Processor||DIGIC 4 (Dual)||DIGIC 8|
|DXO Sensor Quality (score)||66||..|
|DXO Color Depth (bits)||22.0||..|
|DXO Dynamic Range (EV)||11.7||..|
|DXO Low Light (ISO)||854||..|
|Screen Specs||Canon 7D||Canon SL3|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||920k dots||1040k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 7D||Canon SL3|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/4000s|
|Continuous Shooting||8 shutter flaps/s||5 shutter flaps/s|
|Shutter Life Expectancy||150 000 actuations||100 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Single or Dual Card Slots||Single card slot||Single card slot|
|Connectivity Specs||Canon 7D||Canon SL3|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Canon 7D||Canon SL3|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||800 shots per charge||1070 shots per charge|
148 x 111 x 74 mm
(5.8 x 4.4 x 2.9 in)
122 x 93 x 70 mm
(4.8 x 3.7 x 2.8 in)
|Camera Weight||860 g (30.3 oz)||449 g (15.8 oz)|
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