Canon 40D vs XTi
The Canon EOS 40D and the Canon EOS Rebel XTi (labelled Canon 400D in some countries) are two digital cameras that were officially introduced, respectively, in August 2007 and August 2006. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 10.1 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 40D and the Canon EOS Rebel XTi? 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 40D and the Canon XTi. 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 XTi is considerably smaller (32 percent) than the Canon 40D. Moreover, the XTi is markedly lighter (32 percent) than the 40D. In this context, it is worth noting that neither the 40D nor the XTi 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 table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|2.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|3.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|4.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|5.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199|
|6.||Canon 1100D||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|7.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|8.||Canon 50D||146 mm||108 mm||74 mm||822 g||800||Y||Aug 2008||1,299|
|9.||Canon 450D||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|10.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|11.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|12.||Canon 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|13.||Canon XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|14.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|15.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|16.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|17.||Olympus E-30||142 mm||108 mm||75 mm||701 g||750||n||Nov 2008||1,299|
|Note: 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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The XTi was launched at a markedly lower price (by 38 percent) than the 40D, 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.
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. 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the XTi is 1 percent smaller. 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.
In terms of chip-set technology, the 40D uses a more advanced image processing engine (DIGIC 3) than the XTi (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.
Even though the 40D has a slightly larger sensor, both cameras offer the same resolution of 10.1 megapixels. This implies that the 40D has a lower pixel density and larger individual pixels (with a pixel pitch of 5.73μm versus 5.71μm for the XTi), which gives it a potential advantage in terms of light gathering capacity. In addition, the 40D is a somewhat more recent model (by 11 months) than the XTi, and its sensor might have benefitted from technological advances during this time.
The Canon EOS 40D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Canon EOS Rebel XTi are ISO 100 to ISO 1600 (no boost).
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"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|17.||Olympus E-30||Four Thirds||12.2||4032||3024||none||21.3||10.4||530||55|
Apart from body and sensor, cameras can and do differ across a variety of features. The 40D and the XTi 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 40D has a higher magnification than the one of the XTi (0.59x 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 40D, the Canon XTi, and comparable cameras.
|1.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5/s||Y||n|
|2.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|3.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|4.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|6.||Canon 1100D||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|7.||Canon 60D||optical||Y||3.0 / 1040||swivel||n||1/8000s||5.3/s||Y||n|
|8.||Canon 50D||optical||Y||3.0 / 920||fixed||n||1/8000s||6.3/s||Y||n|
|9.||Canon 450D||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|10.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|11.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0/s||Y||n|
|12.||Canon 400D||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|13.||Canon XT||optical||n||1.8 / 115||fixed||n||1/4000s||3.0/s||Y||n|
|14.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0/s||Y||n|
|15.||Canon Rebel||optical||n||1.8 / 118||fixed||n||1/4000s||2.5/s||Y||n|
|16.||Nikon D90||optical||Y||3.0 / 920||fixed||n||1/4000s||4.5/s||Y||n|
|17.||Olympus E-30||optical||Y||2.7 / 230||swivel||n||1/8000s||5.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that is present on the 40D, but is missing on the XTi 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.
Concerning the storage of imaging data, both the 40D and the XTi write their files to Compact Flash 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 40D and Canon EOS Rebel XTi and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|3.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|4.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|5.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|6.||Canon 1100D||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|7.||Canon 60D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|8.||Canon 50D||Y||- / -||-||-||mini||2.0||-||-||-|
|9.||Canon 450D||Y||- / -||-||-||mini||2.0||-||-||-|
|10.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|11.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Canon 400D||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Canon XT||Y||- / -||-||-||-||2.0||-||-||-|
|14.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|15.||Canon Rebel||Y||- / -||-||-||-||1.1||-||-||-|
|16.||Nikon D90||Y||mono / mono||-||-||mini||2.0||-||-||-|
|17.||Olympus E-30||Y||- / -||-||-||-||2.0||-||-||-|
Studio photographers will appreciate that the Canon 40D (unlike the XTi) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 40D and the XTi have been discontinued, but can regularly be found used on eBay. The XTi was replaced by the Canon Xsi, while the 40D was followed by the Canon 50D. 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 how do things add up? Which of the two cameras – the Canon 40D or the Canon XTi – 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 40D:
- Better jpgs: Has a more modern image processing engine (DIGIC 3 vs DIGIC II).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.59x vs 0.49x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (6.5 vs 3 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (750 versus 370) on a single battery charge.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More modern: Is somewhat more recent (announced 11 months after the XTi).
Arguments in favor of the Canon EOS Rebel XTi:
- More compact: Is smaller (127x84mm vs 146x108mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 266g or 32 percent) and is thus easier to take along.
- More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in August 2006).
If the count of relative strengths (bullet points above) is taken as a measure, the 40D is the clear winner of the match-up (9 : 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 40D and the Canon XTi 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 40D and the XTi in practical situations. 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 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.
|1.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|2.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|3.||Canon T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|4.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649|
|5.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199|
|6.||Canon 1100D||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449|
|7.||Canon 60D||5/5||+||..||79/100||4/5||4.5/5||Aug 2010||1,399|
|8.||Canon 50D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2008||1,299|
|9.||Canon 450D||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|10.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|11.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399|
|12.||Canon 400D||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|13.||Canon XT||..||80/100||..||+ +||o||..||Feb 2005||899|
|14.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499|
|15.||Canon Rebel||..||..||..||+ +||..||..||Aug 2003||899|
|16.||Nikon D90||..||+ +||..||+ +||4/5||4.5/5||Aug 2008||1,299|
|17.||Olympus E-30||..||..||..||71/100||4.5/5||4/5||Nov 2008||1,299|
|Notes: (+ +) 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 comparisons of ratings among very different cameras or across long time periods have little meaning. 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? 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 40D vs Canon XTi
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 40D||Canon XTi|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||August 2007||August 2006|
|Launch Price||USD 1,299||USD 799|
|Sensor Specs||Canon 40D||Canon XTi|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||22.2 x 14.8 mm|
|Sensor Area||332.27 mm2||328.56 mm2|
|Sensor Diagonal||26.8 mm||26.7 mm|
|Sensor Resolution||10.1 Megapixels||10.1 Megapixels|
|Image Resolution||3888 x 2592 pixels||3888 x 2592 pixels|
|Pixel Pitch||5.73 μm||5.71 μm|
|Pixel Density||3.03 MP/cm2||3.07 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||no Video|
|ISO Setting||100 - 1,600 ISO||100 - 1,600 ISO|
|ISO Boost||100 - 3,200 ISO||no Enhancement|
|Image Processor||DIGIC 3||DIGIC II|
|DXO Sensor Quality (score)||64||62|
|DXO Color Depth (bits)||22.1||22.1|
|DXO Dynamic Range (EV)||11.3||11.0|
|DXO Low Light (ISO)||703||664|
|Screen Specs||Canon 40D||Canon XTi|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||3.0inch||2.5inch|
|LCD Resolution||230k dots||230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 40D||Canon XTi|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||6.5 shutter flaps/s||3 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||50 000 actuations|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||CF cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 40D||Canon XTi|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||no HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 40D||Canon XTi|
|Battery Life (CIPA)||750 shots per charge||370 shots per charge|
146 x 108 x 74 mm
(5.7 x 4.3 x 2.9 in)
127 x 84 x 65 mm
(5.0 x 3.3 x 2.6 in)
|Camera Weight||822 g (29.0 oz)||556 g (19.6 oz)|
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