Canon T6i vs Nikon D40
The Canon EOS Rebel T6i (called Canon 750D in some regions) and the Nikon D40 are two digital cameras that were revealed to the public, respectively, in February 2015 and November 2006. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 24 megapixels, whereas the Nikon provides 6 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon T6i||Nikon D40|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Nikon F mount lenses|
|24 MP, APS-C Sensor||6 MP, APS-C Sensor|
|1080/30p Video||no Video|
|ISO 100-12800 (100-25600)||ISO 200-1600 (200-3200)|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 1040k dots||2.5" LCD, 230k dots|
|Swivel touchscreen||Fixed screen (not touch-sensitive)|
|5 shutter flaps per second||2.5 shutter flaps per second|
|440 shots per battery charge||470 shots per battery charge|
|132 x 101 x 78 mm, 555 g||124 x 94 x 64 mm, 522 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel T6i and the Nikon D40? 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 side-by-side display below illustrates the physical size and weight of the Canon T6i and the Nikon D40. 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 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 Nikon D40 is notably smaller (13 percent) than the Canon T6i. Moreover, the D40 is markedly lighter (6 percent) than the T6i. In this context, it is worth noting that neither the T6i nor the D40 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. Yet, since both cameras are based around an APS-C sensor, their respective lenses will tend to have similar dimensions and heft. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (T6i) and the Nikon Lens Catalog (D40).
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, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Canon T6i»||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749||Canon T6i|
|Nikon D40«||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499||Nikon D40|
|Canon 77D« »||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899||Canon 77D|
|Canon T7i« »||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749||Canon T7i|
|Canon T6s« »||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||Canon T6s|
|Canon T5« »||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||Canon T5|
|Canon T5i« »||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649||Canon T5i|
|Canon T4i« »||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||Canon T4i|
|Canon T1i« »||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799||Canon T1i|
|Canon XSi« »||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799||Canon XSi|
|Canon XTi« »||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799||Canon XTi|
|Canon XT« »||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899||Canon XT|
|Nikon D3100« »||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599||Nikon D3100|
|Nikon D3000« »||126 mm||97 mm||64 mm||536 g||500||n||Jul 2009||599||Nikon D3000|
|Nikon D40X« »||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729||Nikon D40X|
|Nikon D50« »||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749||Nikon D50|
|Nikon D70s« »||140 mm||111 mm||78 mm||679 g||500||n||Apr 2005||899||Nikon D70s|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. 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 D40 was launched at a markedly lower price (by 33 percent) than the T6i, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 are more costly to manufacture and tend to 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 D40 is 11 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (T6i) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the Canon T6i offers a higher resolution of 24 megapixels, compared with 6 MP of the Nikon D40. 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 3.72μm versus 7.85μm for the D40). However, it should be noted that the T6i is much more recent (by 8 years and 2 months) than the D40, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The resolution advantage of the Canon T6i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T6i for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Nikon D40 are 15 x 10 inch or 38.2 x 25.4 cm for good quality, 12 x 8 inch or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inch or 25.5 x 16.9 cm for excellent quality prints.
The T6i has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS Rebel T6i has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Nikon D40 are ISO 200 to ISO 1600, with the possibility to increase the ISO range to 200-3200.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the T6i provides substantially higher image quality than the D40, with an overall score that is 15 points higher. This advantage is based on 1.7 bits higher color depth, 1 EV in additional dynamic range, and 0.7 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.
|Canon T6i||APS-C||24.0||6000||4000||1080/30p||22.7||12.0||919||71||Canon T6i|
|Nikon D40||APS-C||6.0||3008||2000||none||21.0||11.0||561||56||Nikon D40|
|Canon 77D||APS-C||24.0||6000||4000||1080/60p||23.6||13.3||971||78||Canon 77D|
|Canon T7i||APS-C||24.0||6000||4000||1080/60p||..||..||..||..||Canon T7i|
|Canon T6s||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70||Canon T6s|
|Canon T5||APS-C||17.9||5184||3456||1080/30p||21.9||11.3||724||63||Canon T5|
|Canon T5i||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon T5i|
|Canon T4i||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62||Canon T4i|
|Canon T1i||APS-C||15.1||4752||3168||1080/20p||21.7||11.5||663||63||Canon T1i|
|Canon XSi||APS-C||12.2||4272||2848||none||21.9||10.8||692||61||Canon XSi|
|Canon XTi||APS-C||10.1||3888||2592||none||22.1||11.0||664||62||Canon XTi|
|Canon XT||APS-C||8.0||3456||2304||none||21.8||10.8||637||60||Canon XT|
|Nikon D3100||APS-C||14.2||4608||3072||1080/24p||22.5||11.3||919||67||Nikon D3100|
|Nikon D3000||APS-C||10.0||3872||2592||none||22.3||11.1||563||62||Nikon D3000|
|Nikon D40X||APS-C||10.0||3872||2592||none||22.4||11.4||516||63||Nikon D40X|
|Nikon D50||APS-C||6.0||3008||2000||none||20.9||10.8||560||55||Nikon D50|
|Nikon D70s||APS-C||6.0||3008||2000||none||20.4||10.3||529||50||Nikon D70s|
Many modern cameras cannot only take still pictures, but also record videos. The T6i indeed provides movie recording capabilities, while the D40 does not. The highest resolution format that the T6i can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The T6i and the D40 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 D40 has a higher magnification than the one of the T6i (0.53x vs 0.51x), 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 T6i, the Nikon D40, and comparable cameras.
|Canon T6i||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T6i|
|Nikon D40||optical||n||2.5||230||fixed||n||1/4000s||2.5||Y||n||Nikon D40|
|Canon 77D||optical||Y||3.0||1040||swivel||Y||1/4000s||6.0||Y||n||Canon 77D|
|Canon T7i||optical||n||3.0||1040||swivel||Y||1/4000s||6.0||Y||n||Canon T7i|
|Canon T6s||optical||Y||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T6s|
|Canon T5||optical||n||3.0||460||fixed||n||1/4000s||3.0||Y||n||Canon T5|
|Canon T5i||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T5i|
|Canon T4i||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T4i|
|Canon T1i||optical||n||3.0||920||fixed||n||1/4000s||3.4||Y||n||Canon T1i|
|Canon XSi||optical||n||3.0||230||fixed||n||1/4000s||3.5||Y||n||Canon XSi|
|Canon XTi||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Canon XTi|
|Canon XT||optical||n||1.8||115||fixed||n||1/4000s||3.0||Y||n||Canon XT|
|Nikon D3100||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3100|
|Nikon D3000||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3000|
|Nikon D40X||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Nikon D40X|
|Nikon D50||optical||n||2.0||130||fixed||n||1/4000s||2.5||Y||n||Nikon D50|
|Nikon D70s||optical||n||2.0||130||fixed||n||1/8000s||3.0||Y||n||Nikon D70s|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The T6i has a touchscreen, while the D40 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The T6i 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 D40 does not have a selfie-screen.
The T6i writes its imaging data to SDXC cards, while the D40 uses SDHC cards. The T6i supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D40 cannot take advantage of Ultra High Speed SD 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 Rebel T6i and Nikon D40 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon T6i||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6i|
|Nikon D40||Y||none||none||-||-||none||2.0||-||-||-||Nikon D40|
|Canon 77D||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 77D|
|Canon T7i||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon T7i|
|Canon T6s||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6s|
|Canon T5||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon T5|
|Canon T5i||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon T5i|
|Canon T4i||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon T4i|
|Canon T1i||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon T1i|
|Canon XSi||Y||none||none||-||-||mini||2.0||-||-||-||Canon XSi|
|Canon XTi||Y||none||none||-||-||none||2.0||-||-||-||Canon XTi|
|Canon XT||Y||none||none||-||-||none||2.0||-||-||-||Canon XT|
|Nikon D3100||Y||mono||mono||-||-||mini||2.0||-||-||-||Nikon D3100|
|Nikon D3000||Y||none||none||-||-||none||2.0||-||-||-||Nikon D3000|
|Nikon D40X||Y||none||none||-||-||none||2.0||-||-||-||Nikon D40X|
|Nikon D50||Y||none||none||-||-||none||2.0||-||-||-||Nikon D50|
|Nikon D70s||Y||none||none||-||-||none||2.0||-||-||-||Nikon D70s|
It is notable that the T6i offers wifi support, while the D40 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Both the T6i and the D40 have been discontinued, but can regularly be found used on eBay. The D40 was replaced by the Nikon D40X, while the T6i was followed by the Canon T7i. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Nikon websites.
So what conclusions can be drawn? Which of the two cameras – the Canon T6i or the Nikon D40 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS Rebel T6i:
- More detail: Offers more megapixels (24 vs 6MP) with a 100% higher linear resolution.
- Better image quality: Scores substantially higher (15 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.7 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (1 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (0.7 stops ISO advantage).
- Broader imaging potential: Can record not only still images but also 1080/30p movies.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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 (1040k vs 230k dots).
- 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.
- Faster burst: Shoots at higher frequency (5 vs 2.5 flaps/sec) to capture the decisive moment.
- 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 8 years and 2 months of technical progress since the D40 launch.
Arguments in favor of the Nikon D40:
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.53x vs 0.51x).
- More compact: Is smaller (124x94mm vs 132x101mm) and will fit more readily into a bag.
- More affordable: Was introduced into a lower priced category (33 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in November 2006).
If the count of individual advantages (bullet points above) is taken as a guide, the T6i is the clear winner of the match-up (17 : 4 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.
How about other alternatives? Do the specifications of the Canon T6i and the Nikon D40 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 T6i or the D40 perform in practice. 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.
This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 1D Mark II N vs Nikon D40
- Canon 5D Mark III vs Canon T6i
- Canon G5 X vs Nikon D40
- Canon SX70 vs Nikon D40
- Canon T6i vs Fujifilm XP140
- Canon T6i vs Nikon 1 J5
- Canon T6i vs Sony A6000
- Canon T6i vs Sony H200
- Canon XSi vs Nikon D40
- Nikon D100 vs Nikon D40
- Nikon D40 vs Panasonic FT7
- Nikon D40 vs Panasonic TZ90
Specifications: Canon T6i vs Nikon D40
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 T6i||Nikon D40|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Nikon F mount lenses|
|Launch Date||February 2015||November 2006|
|Launch Price||USD 749||USD 499|
|Sensor Specs||Canon T6i||Nikon D40|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||23.7 x 15.6 mm|
|Sensor Area||332.27 mm2||369.72 mm2|
|Sensor Diagonal||26.8 mm||28.4 mm|
|Sensor Resolution||24 Megapixels||6 Megapixels|
|Image Resolution||6000 x 4000 pixels||3008 x 2000 pixels|
|Pixel Pitch||3.72 μm||7.85 μm|
|Pixel Density||7.22 MP/cm2||1.63 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100-12800 ISO||200-1600 ISO|
|ISO Boost||100-25600 ISO||200-3200 ISO|
|DXO Sensor Quality (score)||71||56|
|DXO Color Depth (bits)||22.7||21.0|
|DXO Dynamic Range (EV)||12.0||11.0|
|DXO Low Light (ISO)||919||561|
|Screen Specs||Canon T6i||Nikon D40|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|LCD Framing||Live View|
|Rear LCD Size||3.0 inch||2.5 inch|
|LCD Resolution||1040k dots||230k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon T6i||Nikon D40|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||5 shutter flaps/s||2.5 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||50 000 actuations|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDHC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||no|
|Connectivity Specs||Canon T6i||Nikon D40|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Body Specs||Canon T6i||Nikon D40|
|Battery Life (CIPA)||440 shots per charge||470 shots per charge|
132 x 101 x 78 mm
(5.2 x 4.0 x 3.1 in)
124 x 94 x 64 mm
(4.9 x 3.7 x 2.5 in)
|Camera Weight||555 g (19.6 oz)||522 g (18.4 oz)|
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