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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.

Headline Specifications
Canon 40D   Canon XTi
Canon 40D Canon XTi
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Canon EF mount lenses
10.1 MP, APS-C Sensor 10.1 MP, APS-C Sensor
no Video no Video
ISO 100-1600 (100-3200) ISO 100-1600
Optical viewfinder Optical viewfinder
3.0" LCD, 230k dots 2.5" LCD, 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
6.5 shutter flaps per second 3 shutter flaps per second
750 shots per battery charge370 shots per battery charge
146 x 108 x 74 mm, 822 g 127 x 84 x 65 mm, 556 g

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.

Body comparison: Canon 40D vs XTi

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.

Size Canon 40D vs Canon XTi
Compare 40D versus XTi top
Comparison 40D or XTi rear

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.

Concerning battery life, the 40D gets 750 shots out of its BP-511A battery, while the XTi can take 370 images on a single charge of its NB-2LH power pack.

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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon 40D» 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299- i Canon 40D
 
Canon XTi« 5.0 in 3.3 in 2.6 in 19.6 oz 370 n Aug 2006 799- i Canon XTi
 
Canon T6i« » 5.2 in 4.0 in 3.1 in 19.6 oz 440 n Feb 2015 749- i Canon T6i
 
Canon T6s« » 5.2 in 4.0 in 3.1 in 19.9 oz 440 n Feb 2015 649- i Canon T6s
 
Canon T3« » 5.1 in 3.9 in 3.1 in 17.5 oz 700 n Feb 2011 449- i Canon T3
 
Canon 60D« » 5.7 in 4.2 in 3.1 in 26.6 oz 1100 Y Aug 2010 1,399- i Canon 60D
 
Canon 50D« » 5.7 in 4.3 in 2.9 in 29.0 oz 800 Y Aug 2008 1,299- i Canon 50D
 
Canon XS« » 5.0 in 3.9 in 2.6 in 17.7 oz 500 n Jun 2008 449- i Canon XS
 
Canon XSi« » 5.1 in 3.9 in 2.4 in 18.5 oz 500 n Jan 2008 799- i Canon XSi
 
Canon 30D« » 5.7 in 4.2 in 2.9 in 27.7 oz 750 n Feb 2006 1,399- i Canon 30D
 
Canon XT« » 5.0 in 3.7 in 2.5 in 19.0 oz 400 n Feb 2005 899- i Canon XT
 
Canon 20D« » 5.7 in 4.2 in 2.8 in 27.2 oz 700 n Aug 2004 1,499- i Canon 20D
 
Canon 10D« » 5.9 in 4.2 in 3.0 in 30.0 oz 500 n Feb 2003 1,999- i Canon 10D
 
Canon Rebel« » 5.6 in 3.9 in 2.8 in 22.9 oz 400 n Aug 2003 899- i Canon Rebel
 
Nikon D90« » 5.2 in 4.1 in 3.0 in 24.8 oz 850 n Aug 2008 1,299- i Nikon D90
Note: Measurements and pricing do not include easily detachable parts, such as 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.

 

Sensor comparison: Canon 40D vs XTi

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.

Canon 40D and Canon XTi sensor measures

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).

40D versus XTi MP

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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Canon 40D» APS-C 10.1 3888 2592-22.111.370364Canon 40D
 
Canon XTi« APS-C 10.1 3888 2592-22.111.066462Canon XTi
 
Canon T6i« » APS-C 24.0 6000 40001080/60p22.712.091971Canon T6i
 
Canon T6s« » APS-C 24.0 6000 40001080/30p22.612.091570Canon T6s
 
Canon T3« » APS-C 12.2 4272 2848720/30p21.911.075562Canon T3
 
Canon 60D« » APS-C 17.9 5184 34561080/30p22.211.581366Canon 60D
 
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
 
Canon XS« » APS-C 10.1 3888 2592-----Canon XS
 
Canon XSi« » APS-C 12.2 4272 2848-21.910.869261Canon XSi
 
Canon 30D« » APS-C 8.2 3504 2336-21.510.873659Canon 30D
 
Canon XT« » APS-C 8.0 3456 2304-21.810.863760Canon XT
 
Canon 20D« » APS-C 8.2 3504 2336-21.911.072162Canon 20D
 
Canon 10D« » APS-C 6.3 3072 2048-21.110.957157Canon 10D
 
Canon Rebel« » APS-C 6.3 3072 2048-21.010.854455Canon Rebel
 
Nikon D90« » APS-C 12.2 4288 2848720/24p22.712.597773Nikon D90
The 40D offers Live View, so that it can project the live image that the sensor receives onto the rear screen for framing. The XTi lacks this capability. Both cameras are still-image focused and cannot record videos.
 

Feature comparison: Canon 40D vs XTi

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.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Canon 40D»optical Y 3.0 230 fixed n 1/8000s 6.5 Y n Canon 40D
 
Canon XTi«optical n 2.5 230 fixed n 1/4000s 3.0 Y n Canon XTi
 
Canon T6i« »optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon T6i
 
Canon T6s« »optical Y 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon T6s
 
Canon T3« »optical n 2.7 230 fixed n 1/4000s 3.0 Y n Canon T3
 
Canon 60D« »optical Y 3.0 1040 swivel n 1/8000s 5.3 Y n Canon 60D
 
Canon 50D« »optical Y 3.0 920 fixed n 1/8000s 6.3 Y n Canon 50D
 
Canon XS« »optical n 2.5 230 fixed n 1/4000s 3.0 Y n Canon XS
 
Canon XSi« »optical n 3.0 230 fixed n 1/4000s 3.5 Y n Canon XSi
 
Canon 30D« »optical Y 2.5 230 fixed n 1/8000s 5.0 Y n Canon 30D
 
Canon XT« »optical n 1.8 115 fixed n 1/4000s 3.0 Y n Canon XT
 
Canon 20D« »optical Y 1.8 118 fixed n 1/8000s 5.0 Y n Canon 20D
 
Canon 10D« »optical Y 1.8 118 fixed n 1/4000s 3.0 Y n Canon 10D
 
Canon Rebel« »optical n 1.8 118 fixed n 1/4000s 2.5 Y n Canon Rebel
 
Nikon D90« »optical Y 3.0 920 fixed n 1/4000s 4.5 Y n Nikon D90

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.

 

Connectivity comparison: Canon 40D vs XTi

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.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Canon 40D»Y-----2.0---Canon 40D
 
Canon XTi«Y-----2.0---Canon XTi
 
Canon T6i« »YstereomonoY-mini2.0YY-Canon T6i
 
Canon T6s« »YstereomonoY-mini2.0YY-Canon T6s
 
Canon T3« »Ystereomono--mini2.0---Canon T3
 
Canon 60D« »YmonomonoY-mini2.0---Canon 60D
 
Canon 50D« »Y----mini2.0---Canon 50D
 
Canon XS« »Y-----2.0---Canon XS
 
Canon XSi« »Y----mini2.0---Canon XSi
 
Canon 30D« »Y-----2.0---Canon 30D
 
Canon XT« »Y-----2.0---Canon XT
 
Canon 20D« »Y-----1.1---Canon 20D
 
Canon 10D« »Y-----1.1---Canon 10D
 
Canon Rebel« »Y-----1.1---Canon Rebel
 
Nikon D90« »Ymonomono--mini2.0---Nikon D90

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.


Review summary: Canon 40D vs XTi

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.

40D 09:04 XTi

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.

Expert reviews: Canon 40D vs XTi

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 (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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon 40D»+ ++ +4.5/5o4.5/5 Aug 2007 1,299- i Canon 40D
 
Canon XTi«+ ++ +o4.5/54/5 Aug 2006 799- i Canon XTi
 
Canon T6i« »-75/1004.5/54.5/54.5/5 Feb 2015 749- i Canon T6i
 
Canon T6s« »+77/1004.5/54.5/54.5/5 Feb 2015 649- i Canon T6s
 
Canon T3« »80/10069/1004/54/54.5/5 Feb 2011 449- i Canon T3
 
Canon 60D« »+79/1004/55/54.5/5 Aug 2010 1,399- i Canon 60D
 
Canon 50D« »+ ++ +4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
 
Canon XS« »82/100+ +3.5/54/54.5/5 Jun 2008 449- i Canon XS
 
Canon XSi« »+ ++ +4/55/54.5/5 Jan 2008 799- i Canon XSi
 
Canon 30D« »+ ++ +oo- Feb 2006 1,399- i Canon 30D
 
Canon XT« »80/100+ +oo- Feb 2005 899- i Canon XT
 
Canon 20D« »-+ +-o- Aug 2004 1,499- i Canon 20D
 
Canon 10D« »-+ +-o- Feb 2003 1,999- i Canon 10D
 
Canon Rebel« »-+ +-o- Aug 2003 899- i Canon Rebel
 
Nikon D90« »+ ++ +4/55/54.5/5 Aug 2008 1,299- i Nikon D90
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.

Canon 40D:
Check Ebay offers
Canon XTi:
Check Ebay offers

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.

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    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 Specifications
    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 1299 USD 799
    Sensor Specs Canon 40D Canon XTi
    Sensor Technology CMOS CMOS
    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
    Crop Factor 1.6x 1.6x
    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 100-1600 ISO 100-1600 ISO
    ISO Boost 100-3200 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%
    Viewfinder Magnification 0.59x 0.49x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 3.0 inch 2.5 inch
    LCD Resolution 230k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Canon 40D Canon XTi
    Autofocus System Phase-detect AF Phase-detect AF
    Continuous Shooting 6.5 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy100 000 actuations50 000 actuations
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium CF cards CF cards
    Second Storage Option Single card slot Single card slot
    Connectivity Specs Canon 40D Canon XTi
    External Flash Hotshoe Hotshoe
    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 Type BP-511A power pack NB-2LH power pack
    Battery Life (CIPA)750 shots per charge370 shots per charge
    Body Dimensions 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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