Canon 400D vs T7
The Canon EOS 400D (called Canon XTi in some regions) and the Canon EOS Rebel T7 (labelled Canon 2000D in some countries) are two digital cameras that were officially introduced, respectively, in August 2006 and February 2018. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 400D has a resolution of 10.1 megapixels, whereas the T7 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 400D and the Canon EOS Rebel T7? 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 400D and the Canon T7 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 measures 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 T7 is notably larger (22 percent) than the Canon 400D. However, the T7 is markedly lighter (15 percent) than the 400D. In this context, it is worth noting that neither the 400D nor the T7 are weather-sealed.
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 adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|2.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449|
|3.||Canon SL3||122 mm||93 mm||70 mm||449 g||1070||n||Apr 2019||599|
|4.||Canon T100||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399|
|5.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|6.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|7.||Canon T6||129 mm||101 mm||78 mm||485 g||500||n||Mar 2016||449|
|8.||Canon 750D||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|9.||Canon 760D||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|10.||Canon 650D||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|11.||Canon 1100D||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|12.||Canon 550D||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699|
|13.||Canon 500D||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|14.||Canon 450D||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|15.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|16.||Canon 350D||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|17.||Nikon D40X||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. 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 T7 was launched at a markedly lower price (by 44 percent) than the 400D, 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 size of the sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the T7 is 1 percent bigger. They nevertheless have the same format factor of 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the T7 uses a more advanced image processing engine (DIGIC 4+) than the 400D (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.
With 24MP, the T7 offers a higher resolution than the 400D (10.1MP), but the T7 has smaller individual pixels (pixel pitch of 3.72μm versus 5.71μm for the 400D). Yet, the T7 is a much more recent model (by 11 years and 6 months) than the 400D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Canon T7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T7 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 400D are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.
The Canon EOS 400D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS Rebel T7 are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-12800.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
| DXO |
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The T7 indeed provides for movie recording, while the 400D does not. The highest resolution format that the T7 can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 400D and the T7 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 viewfinders of both cameras offer the same field of view (95%), but the viewfinder of the T7 has a higher magnification than the one of the 400D (0.50x vs 0.49x), 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 400D, the Canon T7, and comparable cameras.
The 400D writes its imaging data to Compact Flash cards, while the T7 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 400D and Canon EOS Rebel T7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
It is notable that the T7 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 400D does not provide wifi capability.
The T7 is a recent model that features in the current product line-up of Canon. In contrast, the 400D has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the 400D was succeeded by the Canon 450D. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what is the bottom line? Is the Canon 400D better than the Canon T7 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS 400D:
- More compact: Is smaller (127x84mm vs 129x101mm) and thus needs less room in the bag.
- More heavily discounted: Has been available for much longer (launched in August 2006).
Reasons to prefer the Canon EOS Rebel T7:
- More detail: Has more megapixels (24 vs 10.1MP), which boosts linear resolution by 54%.
- Better jpgs: Has a more modern image processing engine (DIGIC 4+ vs DIGIC II).
- Broader imaging potential: Can capture not only stills but also 1080/30p video.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.50x vs 0.49x).
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (920k vs 230k dots).
- Less heavy: Has a lower weight (by 81g or 15 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (500 versus 370) out of a single battery charge.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (44 percent cheaper at launch).
- More modern: Reflects 11 years and 6 months of technical progress since the 400D launch.
If the number of relative strengths (bullet points above) is taken as a guide, the T7 is the clear winner of the contest (12 : 2 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 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.
How about other alternatives? Do the specifications of the Canon 400D and the Canon T7 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the 400D or the T7 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 why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
|1.||Canon 400D||..||+ +||+ +||o||4/5||Aug 2006||799|
|2.||Canon T7||..||o||..||3.5/5||3.5/5||Feb 2018||449|
|3.||Canon SL3||..||o||79/100||4/5||4/5||Apr 2019||599|
|4.||Canon T100||..||o||..||3.5/5||3.5/5||Feb 2018||399|
|5.||Canon 77D||4.5/5||..||82/100||4.5/5||4/5||Feb 2017||899|
|6.||Canon SL2||4/5||+ +||78/100||4.5/5||4.5/5||Jun 2017||549|
|7.||Canon T6||4/5||o||73/100||4/5||4/5||Mar 2016||449|
|8.||Canon 750D||5/5||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|9.||Canon 760D||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|10.||Canon 650D||4/5||+ +||77/100||4.5/5||4.5/5||Jun 2012||849|
|11.||Canon 1100D||..||80/100||69/100||4/5||4.5/5||Feb 2011||449|
|12.||Canon 550D||..||+ +||77/100||4/5||4.5/5||Feb 2010||699|
|13.||Canon 500D||..||+ +||74/100||4.5/5||4.5/5||Mar 2009||799|
|14.||Canon 450D||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|15.||Canon 40D||..||+ +||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|16.||Canon 350D||..||80/100||+ +||o||..||Feb 2005||899|
|17.||Nikon D40X||..||79/100||+ +||4/5||4/5||Mar 2007||729|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
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.
Specifications: Canon 400D vs Canon T7
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 400D||Canon T7|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||August 2006||February 2018|
|Launch Price||USD 799||USD 449|
|Sensor Specs||Canon 400D||Canon T7|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.2 x 14.8 mm||22.3 x 14.9 mm|
|Sensor Area||328.56 mm2||332.27 mm2|
|Sensor Diagonal||26.7 mm||26.8 mm|
|Sensor Resolution||10.1 Megapixels||24 Megapixels|
|Image Resolution||3888 x 2592 pixels||6000 x 4000 pixels|
|Pixel Pitch||5.71 μm||3.72 μm|
|Pixel Density||3.07 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/30p Video|
|ISO Setting||100 - 1,600 ISO||100 - 6,400 ISO|
|ISO Boost||no Enhancement||100 - 12,800 ISO|
|Image Processor||DIGIC II||DIGIC 4+|
|DXO Sensor Quality (score)||62||..|
|DXO Color Depth (bits)||22.1||..|
|DXO Dynamic Range (EV)||11.0||..|
|DXO Low Light (ISO)||664||..|
|Screen Specs||Canon 400D||Canon T7|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||230k dots||920k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 400D||Canon T7|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||3 shutter flaps/s||3 shutter flaps/s|
|Shutter Life Expectancy||50 000 actuations||100 000 actuations|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 400D||Canon T7|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon 400D||Canon T7|
|Battery Life (CIPA)||370 shots per charge||500 shots per charge|
127 x 84 x 65 mm
(5.0 x 3.3 x 2.6 in)
129 x 101 x 78 mm
(5.1 x 4.0 x 3.1 in)
|Camera Weight||556 g (19.6 oz)||475 g (16.8 oz)|
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