Sony A7 III vs Canon 550D
The Sony Alpha A7 III and the Canon EOS 550D (labelled Canon T2i in some countries) are two digital cameras that were announced, respectively, in February 2018 and February 2010. The A7 III is a mirrorless interchangeable lens camera, while the 550D is a DSLR. The cameras are based on a full frame (A7 III) and an APS-C (550D) sensor. The Sony has a resolution of 24 megapixels, whereas the Canon provides 17.9 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 Sony Alpha A7 III and the Canon EOS 550D? 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 Sony A7 III and the Canon 550D. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 550D is somewhat larger (4 percent) than the Sony A7 III. However, the 550D is markedly lighter (18 percent) than the A7 III. It is worth mentioning in this context that the A7 III is splash and dust resistant, while the 550D 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 Sony FE Lens Catalog (A7 III) and the Canon EF Lens Catalog (550D). Mirrorless cameras, such as the Sony A7 III, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.
Concerning battery life, the A7 III gets 610 shots out of its Sony NP-FZ100 battery, while the 550D can take 440 images on a single charge of its Canon LP-E8 power pack. The power pack in the A7 III can be charged via the USB port, so that it is not always necessary to take the battery charger along 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.
Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | 1,999 | amazon.com | |
2. | Canon 550D | 129 mm | 98 mm | 62 mm | 530 g | 440 | n | Feb 2010 | 699 | ebay.com | |
3. | Canon 6D Mark II | 144 mm | 111 mm | 75 mm | 765 g | 1200 | Y | Jun 2017 | 1,999 | amazon.com | |
4. | Canon 500D | 129 mm | 98 mm | 62 mm | 520 g | 400 | n | Mar 2009 | 799 | ebay.com | |
5. | Canon 600D | 133 mm | 100 mm | 80 mm | 570 g | 440 | n | Feb 2011 | 599 | ebay.com | |
6. | Canon 650D | 133 mm | 100 mm | 79 mm | 575 g | 440 | n | Jun 2012 | 849 | ebay.com | |
7. | Canon 700D | 133 mm | 100 mm | 79 mm | 580 g | 440 | n | Mar 2013 | 649 | ebay.com | |
8. | Canon 750D | 132 mm | 101 mm | 78 mm | 555 g | 440 | n | Feb 2015 | 749 | ebay.com | |
9. | Nikon Z6 | 134 mm | 101 mm | 67 mm | 675 g | 310 | Y | Aug 2018 | 1,999 | ebay.com | |
10. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | 1,999 | ebay.com | |
11. | Sony A7 IV | 131 mm | 96 mm | 80 mm | 659 g | 580 | Y | Oct 2021 | 2,499 | amazon.com | |
12. | Sony A7C | 124 mm | 71 mm | 60 mm | 509 g | 740 | Y | Sep 2020 | 1,799 | amazon.com | |
13. | Sony A7R III | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Oct 2017 | 3,199 | ebay.com | |
14. | Sony A7R IIIA | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Apr 2021 | 3,199 | amazon.com | |
15. | Sony A7R IV | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Jul 2019 | 3,499 | ebay.com | |
16. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | 4,499 | ebay.com | |
17. | Sony A9 II | 129 mm | 96 mm | 76 mm | 678 g | 690 | Y | Oct 2019 | 4,499 | amazon.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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 550D was launched at a markedly lower price (by 65 percent) than the A7 III, 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 imaging sensor is a crucial determinant 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. 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 Sony A7 III features a full frame sensor and the Canon 550D an APS-C sensor. The sensor area in the 550D is 61 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24MP, the A7 III offers a higher resolution than the 550D (17.9MP), but the A7 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 4.31μm for the 550D) due to its larger sensor. Moreover, the A7 III is a much more recent model (by 8 years) than the 550D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.
The resolution advantage of the Sony A7 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 III 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 550D 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 A7 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Sony Alpha A7 III has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Canon EOS 550D are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-12800.
In terms of underlying technology, the A7 III is build around a BSI-CMOS sensor, while the 550D uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
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 review, the A7 III provides substantially higher image quality than the 550D, with an overall score that is 30 points higher. This advantage is based on 2.9 bits higher color depth, 3.2 EV in additional dynamic range, and 2.3 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.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
2. | Canon 550D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 22.1 | 11.5 | 784 | 66 | |
3. | Canon 6D Mark II | Full Frame | 26.0 | 6240 | 4160 | 1080/60p | 24.4 | 11.9 | 2862 | 85 | |
4. | Canon 500D | APS-C | 15.1 | 4752 | 3168 | 1080/20p | 21.7 | 11.5 | 663 | 63 | |
5. | Canon 600D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 22.1 | 11.5 | 793 | 65 | |
6. | Canon 650D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 21.7 | 11.2 | 722 | 62 | |
7. | Canon 700D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 21.7 | 11.2 | 681 | 61 | |
8. | Canon 750D | APS-C | 24.0 | 6000 | 4000 | 1080/30p | 22.7 | 12.0 | 919 | 71 | |
9. | Nikon Z6 | Full Frame | 24.3 | 6048 | 4024 | 4K/30p | 25.3 | 14.3 | 3299 | 95 | |
10. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
11. | Sony A7 IV | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3379 | 97 | |
12. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
13. | Sony A7R III | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
14. | Sony A7R IIIA | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
15. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
16. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 | |
17. | Sony A9 II | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.0 | 3434 | 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, but the A7 III provides a higher video resolution than the 550D. It can shoot video footage at 4K/30p, while the Canon is limited to 1080/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7 III has an electronic viewfinder (2359k dots), while the 550D 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 III offers a wider field of view (100%) than the one in the 550D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7 III has a higher magnification (0.78x 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 Sony A7 III and Canon 550D in connection with corresponding information for a sample of similar cameras.
Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
2. | Canon 550D | optical | n | 3.0 / 1040 | fixed | n | 1/4000s | 3.7/s | Y | n | |
3. | Canon 6D Mark II | optical | Y | 3.0 / 1040 | swivel | Y | 1/4000s | 6.5/s | n | n | |
4. | Canon 500D | optical | n | 3.0 / 920 | fixed | n | 1/4000s | 3.4/s | Y | n | |
5. | Canon 600D | optical | n | 3.0 / 1040 | swivel | n | 1/4000s | 3.7/s | Y | n | |
6. | Canon 650D | optical | n | 3.0 / 1040 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
7. | Canon 700D | optical | n | 3.0 / 1040 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
8. | Canon 750D | optical | n | 3.0 / 1040 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
9. | Nikon Z6 | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 12.0/s | n | Y | |
10. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
11. | Sony A7 IV | 3686 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
12. | Sony A7C | 2360 | n | 3.0 / 922 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
13. | Sony A7R III | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
14. | Sony A7R IIIA | 3686 | n | 3.0 / 2340 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
15. | Sony A7R IV | 5760 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
16. | Sony A9 | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
17. | Sony A9 II | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
One feature that differentiates the A7 III and the 550D is in-body image stabilization (IBIS). The A7 III reduces the risk of handshake-induced blur with all attached lenses, while the 550D offers no blur reduction with lenses that themselves do not provide optical image stabilization.
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 A7 III 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 Sony A7 III 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 A7 III writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the 550D uses SDXC cards. The A7 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the 550D only has one slot. The A7 III supports UHS-II cards on its first slot and UHS-I on its second one, while the 550D 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 Sony Alpha A7 III and Canon EOS 550D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
2. | Canon 550D | Y | stereo / - | Y | - | mini | 2.0 | - | - | - | |
3. | Canon 6D Mark II | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
4. | Canon 500D | Y | mono / mono | - | - | mini | 2.0 | - | - | - | |
5. | Canon 600D | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
6. | Canon 650D | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
7. | Canon 700D | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
8. | Canon 750D | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | - | |
9. | Nikon Z6 | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
10. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
11. | Sony A7 IV | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
12. | Sony A7C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
13. | Sony A7R III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
14. | Sony A7R IIIA | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
15. | Sony A7R IV | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
16. | Sony A9 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | Y | |
17. | Sony A9 II | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y |
It is notable that the A7 III has a headphone jack, which is not present on the 550D This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.
The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the 550D has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the 550D was succeeded by the Canon 600D. Further information on the features and operation of the A7 III and 550D can be found, respectively, in the Sony A7 III Manual (free pdf) or the online Canon 550D Manual.
Review summary
So how do things add up? Is there a clear favorite between the Sony A7 III and the Canon 550D? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Sony Alpha A7 III:
- More detail: Offers more megapixels (24 vs 17.9MP) with a 16% higher linear resolution.
- Better image quality: Scores substantially higher (30 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (2.9 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (3.2 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (2.3 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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 (0.78x vs 0.54x).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 3.7 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (610 versus 440) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- 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.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II and UHS-I) SDXC cards.
- More modern: Reflects 8 years of technical progress since the 550D launch.
Advantages of the Canon EOS 550D:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
- Less heavy: Has a lower weight (by 120g or 18 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (65 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in February 2010).
If the count of relative strengths (bullet points above) is taken as a measure, the A7 III is the clear winner of the match-up (29 : 6 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 Sony A7 III and the Canon 550D place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the A7 III or the 550D. 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.
Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | 1,999 | amazon.com | |
2. | Canon 550D | .. | + + | .. | 77/100 | 4/5 | 4.5/5 | Feb 2010 | 699 | ebay.com | |
3. | Canon 6D Mark II | 4/5 | + | 4/5 | 80/100 | 4.5/5 | 4/5 | Jun 2017 | 1,999 | amazon.com | |
4. | Canon 500D | .. | + + | .. | 74/100 | 4.5/5 | 4.5/5 | Mar 2009 | 799 | ebay.com | |
5. | Canon 600D | 3/5 | o | .. | 77/100 | 4.5/5 | 4.5/5 | Feb 2011 | 599 | ebay.com | |
6. | Canon 650D | 4/5 | + + | .. | 77/100 | 4.5/5 | 4.5/5 | Jun 2012 | 849 | ebay.com | |
7. | Canon 700D | .. | .. | .. | 76/100 | 4.5/5 | 4.5/5 | Mar 2013 | 649 | ebay.com | |
8. | Canon 750D | 5/5 | .. | .. | 75/100 | 4.5/5 | 4.5/5 | Feb 2015 | 749 | ebay.com | |
9. | Nikon Z6 | 5/5 | .. | 5/5 | 89/100 | 4.5/5 | 5/5 | Aug 2018 | 1,999 | ebay.com | |
10. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | 1,999 | ebay.com | |
11. | Sony A7 IV | 5/5 | + + | 4.5/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2021 | 2,499 | amazon.com | |
12. | Sony A7C | 3.5/5 | .. | 3.5/5 | 86/100 | 4/5 | 4/5 | Sep 2020 | 1,799 | amazon.com | |
13. | Sony A7R III | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Oct 2017 | 3,199 | ebay.com | |
14. | Sony A7R IIIA | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Apr 2021 | 3,199 | amazon.com | |
15. | Sony A7R IV | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2019 | 3,499 | ebay.com | |
16. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | 4,499 | ebay.com | |
17. | Sony A9 II | .. | .. | 5/5 | 90/100 | 5/5 | 5/5 | Oct 2019 | 4,499 | amazon.com | |
Note: (+ +) 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.
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.
- Canon 1D X Mark III vs Sony A7 III
- Canon 550D vs Fujifilm X-A2
- Canon 550D vs Leica T
- Canon 550D vs Nikon B600
- Canon 550D vs Olympus E-600
- Canon 550D vs Panasonic TZ100
- Canon 550D vs Panasonic TZ95
- Canon 60D vs Sony A7 III
- Canon R5 C vs Sony A7 III
- Nikon D80 vs Sony A7 III
- Panasonic GX850 vs Sony A7 III
- Sony A7 III vs Sony NEX-F3
Specifications: Sony A7 III vs Canon 550D
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 | Sony A7 III | Canon 550D |
---|---|---|
Camera Type | Mirrorless system camera | Digital single lens reflex |
Camera Lens | Sony E mount lenses | Canon EF mount lenses |
Launch Date | February 2018 | February 2010 |
Launch Price | USD 1,999 | USD 699 |
Sensor Specs | Sony A7 III | Canon 550D |
Sensor Technology | BSI-CMOS | CMOS |
Sensor Format | Full Frame Sensor | APS-C Sensor |
Sensor Size | 35.6 x 23.8 mm | 22.3 x 14.9 mm |
Sensor Area | 847.28 mm2 | 332.27 mm2 |
Sensor Diagonal | 42.8 mm | 26.8 mm |
Crop Factor | 1.0x | 1.6x |
Sensor Resolution | 24 Megapixels | 17.9 Megapixels |
Image Resolution | 6000 x 4000 pixels | 5184 x 3456 pixels |
Pixel Pitch | 5.94 μm | 4.31 μm |
Pixel Density | 2.83 MP/cm2 | 5.39 MP/cm2 |
Moiré control | Anti-Alias filter | Anti-Alias filter |
Movie Capability | 4K/30p Video | 1080/30p Video |
ISO Setting | 100 - 51,200 ISO | 100 - 6,400 ISO |
ISO Boost | 50 - 204,800 ISO | 100 - 12,800 ISO |
Image Processor | BIONZ X | DIGIC 4 |
DXO Sensor Quality (score) | 96 | 66 |
DXO Color Depth (bits) | 25.0 | 22.1 |
DXO Dynamic Range (EV) | 14.7 | 11.5 |
DXO Low Light (ISO) | 3730 | 784 |
Screen Specs | Sony A7 III | Canon 550D |
Viewfinder Type | Electronic viewfinder | Optical viewfinder |
Viewfinder Field of View | 100% | 95% |
Viewfinder Magnification | 0.78x | 0.54x |
Viewfinder Resolution | 2359k dots | |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 922k dots | 1040k dots |
LCD Attachment | Tilting screen | Fixed screen |
Touch Input | Touchscreen | no Touchscreen |
Shooting Specs | Sony A7 III | Canon 550D |
Focus System | On-Sensor Phase-detect | Phase-detect AF |
Manual Focusing Aid | Focus Peaking | no Peaking Feature |
Continuous Shooting | 10 shutter flaps/s | 3.7 shutter flaps/s |
Shutter Life Expectancy | 200 000 actuations | 100 000 actuations |
Electronic Shutter | YES | no E-Shutter |
Time-Lapse Photography | Intervalometer built-in | no Intervalometer |
Image Stabilization | In-body stabilization | Lens stabilization only |
Fill Flash | no On-Board Flash | Built-in Flash |
Storage Medium | MS or SDXC cards | SDXC cards |
Single or Dual Card Slots | Dual card slots | Single card slot |
UHS card support | Single UHS-II | no |
Connectivity Specs | Sony A7 III | Canon 550D |
External Flash | Hotshoe | Hotshoe |
USB Connector | USB 3.1 | USB 2.0 |
HDMI Port | micro HDMI | mini HDMI |
Microphone Port | External MIC port | External MIC port |
Headphone Socket | Headphone port | no Headphone port |
Wifi Support | Wifi built-in | no Wifi |
Near-Field Communication | NFC built-in | no NFC |
Bluetooth Support | Bluetooth built-in | no Bluetooth |
Body Specs | Sony A7 III | Canon 550D |
Environmental Sealing | Weathersealed body | not weather sealed |
Battery Type | Sony NP-FZ100 | Canon LP-E8 |
Battery Life (CIPA) | 610 shots per charge | 440 shots per charge |
In-Camera Charging | USB charging | no USB charging |
Body Dimensions |
127 x 96 x 74 mm (5.0 x 3.8 x 2.9 in) |
129 x 98 x 62 mm (5.1 x 3.9 x 2.4 in) |
Camera Weight | 650 g (22.9 oz) | 530 g (18.7 oz) |
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