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Canon 400D versus Canon 40D

The Canon EOS 400D (called Canon XTi in some regions) and the Canon EOS 40D are two digital cameras that were announced, respectively, in August 2006 and August 2007. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 10.1 megapixel. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 400D vs Canon 40D

The physical size and weight of the Canon 400D and the Canon 40D are illustrated in the side-by-side display below. 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. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the 400D – represents 100 percent across all the size and weight measures).

Compare Canon 400D vs Canon 40D
Compare 400D versus 40D top
Compare 400D and 40D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 40D is considerably larger (48 percent) than the Canon 400D. Moreover, the 40D is substantially heavier (48 percent) than the 400D. In this context, it is worth noting that neither the 400D nor the 40D 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 find an overview of suitable optics in the Canon EF Lens Catalog.

Concerning battery life, the 400D gets 370 shots out of its NB-2LH battery, while the 40D can take 750 images on a single charge of its BP-511A power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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 400D» 5.0 in 3.3 in 2.6 in 19.6 oz 370 n Aug 2006 799- i Canon 400D
Canon 40D« 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299- i Canon 40D
Canon 750D« » 5.2 in 4.0 in 3.1 in 19.6 oz 440 n Feb 2015 749- i Canon 750D
Canon 760D« » 5.2 in 4.0 in 3.1 in 19.9 oz 440 n Feb 2015 849- i Canon 760D
Canon 650D« » 5.2 in 3.9 in 3.1 in 20.3 oz 440 n Jun 2012 849- i Canon 650D
Canon 1100D« » 5.1 in 3.9 in 3.1 in 17.5 oz 700 n Feb 2011 449- i Canon 1100D
Canon 550D« » 5.1 in 3.9 in 2.4 in 18.7 oz 440 n Feb 2010 699- i Canon 550D
Canon 500D« » 5.1 in 3.9 in 2.4 in 18.3 oz 400 n Mar 2009 799- i Canon 500D
Canon 50D« » 5.7 in 4.3 in 2.9 in 29.0 oz 800 Y Aug 2008 1,299- i Canon 50D
Canon 450D« » 5.1 in 3.9 in 2.4 in 18.5 oz 500 n Jan 2008 799- i Canon 450D
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 350D« » 5.0 in 3.7 in 2.5 in 19.0 oz 400 n Feb 2005 899- i Canon 350D
Canon 20D« » 5.7 in 4.2 in 2.8 in 27.2 oz 700 n Aug 2004 1,499- i Canon 20D
Nikon D90« » 5.2 in 4.1 in 3.0 in 24.8 oz 850 n Aug 2008 1,299- i Nikon D90
Nikon D40X« » 4.9 in 3.7 in 2.5 in 18.4 oz 520 n Mar 2007 729- i Nikon D40X

Any camera purchase 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 400D 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 400D vs Canon 40D

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. 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 40D 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 40D uses a more advanced image processing engine (DIGIC 3) than the 400D (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.

Canon 400D and Canon 40D sensor measures

Even though the 40D has a slightly larger sensor, both cameras offer the same resolution of 10.1 megapixel. This implies that the 40D has a lower pixel density and marginally larger individual pixels (with a pixel pitch of 5.73μm versus 5.71μm for the 400D), 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 400D, and its sensor might have benefitted from technological advances during this time.

400D versus 40D 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 image quality. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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 400D» APS-C 10.1 3888 2592-22.111.066462Canon 400D
Canon 40D« APS-C 10.1 3888 2592-22.111.370364Canon 40D
Canon 750D« » APS-C 24.0 6000 40001080/60p22.712.091971Canon 750D
Canon 760D« » APS-C 24.0 6000 40001080/30p22.612.091570Canon 760D
Canon 650D« » APS-C 17.9 5184 34561080/30p21.711.272262Canon 650D
Canon 1100D« » APS-C 12.2 4272 2848720/30p21.911.075562Canon 1100D
Canon 550D« » APS-C 17.9 5184 34561080/30p22.111.578466Canon 550D
Canon 500D« » APS-C 15.1 4752 31681080/20p21.711.566363Canon 500D
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
Canon 450D« » APS-C 12.2 4272 2848-21.910.869261Canon 450D
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 350D« » APS-C 8.0 3456 2304-21.810.863760Canon 350D
Canon 20D« » APS-C 8.2 3504 2336-21.911.072162Canon 20D
Nikon D90« » APS-C 12.2 4288 2848720/24p22.712.597773Nikon D90
Nikon D40X« » APS-C 10.0 3872 2592-22.411.451663Nikon D40X
The 40D offers Live View, so that it can project the live image that the sensor receives onto the rear screen for framing. The 400D lacks this capability. Both cameras are still-image focused and cannot record videos.
 

Feature comparison: Canon 400D vs Canon 40D

Beyond body and sensor, cameras can and do differ across a range of features. The 400D and the 40D 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 adjacent table lists some of the other core features of the Canon 400D and Canon 40D along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or in the dpreview camera hub.

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)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon 400D»optical n 2.5 230 fixed n 4000 3.0 Y n Canon 400D
Canon 40D«optical Y 3.0 230 fixed n 8000 6.5 Y n Canon 40D
Canon 750D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 750D
Canon 760D« »optical Y 3.0 1040 swivel Y 4000 5.0 Y n Canon 760D
Canon 650D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 650D
Canon 1100D« »optical n 2.7 230 fixed n 4000 3.0 Y n Canon 1100D
Canon 550D« »optical n 3.0 1040 fixed n 4000 3.7 Y n Canon 550D
Canon 500D« »optical n 3.0 920 fixed n 4000 3.4 Y n Canon 500D
Canon 50D« »optical Y 3.0 920 fixed n 8000 6.3 Y n Canon 50D
Canon 450D« »optical n 3.0 230 fixed n 4000 3.5 Y n Canon 450D
Canon XSi« »optical n 3.0 230 fixed n 4000 3.5 Y n Canon XSi
Canon 30D« »optical Y 2.5 230 fixed n 8000 5.0 Y n Canon 30D
Canon 350D« »optical n 1.8 115 fixed n 4000 3.0 Y n Canon 350D
Canon 20D« »optical Y 1.8 118 fixed n 8000 5.0 Y n Canon 20D
Nikon D90« »optical Y 3.0 920 fixed n 4000 4.5 Y n Nikon D90
Nikon D40X« »optical n 2.5 230 fixed n 4000 3.0 Y n Nikon D40X

One feature that is present on the 40D, but is missing on the 400D 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.

Both the 400D and the 40D have been discontinued, but can regularly be found used on eBay. The 400D was replaced by the Canon 450D, while the 40D was followed by the Canon 50D.

Review summary: Canon 400D vs Canon 40D

So what is the bottom line? Which of the two cameras – the Canon 400D or the Canon 40D – has the upper hand? The listing below highlights the relative strengths of the two models.


Arguments in favor of the Canon EOS 400D:

  • More compact: Is smaller (127x84mm vs 146x108mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 266g or 32 percent) and hence easier to carry around.
  • 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).


Advantages of the Canon EOS 40D:

  • Better jpgs: Has a more modern image processing engine (DIGIC 3 vs DIGIC II).
  • Easier setting verification: Features a control panel on top to check 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 (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (6.5 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (750 versus 370) out of a single battery charge.
  • More modern: Was introduced somewhat (11 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the 40D emerges as the winner of the match-up (7 : 4 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.

400D 04:07 40D

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 400D and the 40D in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is where reviews by experts come in. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

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 400D»HiRecHiRecrev4.5/54/5 Aug 2006 799- i Canon 400D
Canon 40D«HiRecHiRec4.5/5rev4.5/5 Aug 2007 1,299- i Canon 40D
Canon 750D« »-75/1004.5/54.5/54.5/5 Feb 2015 749- i Canon 750D
Canon 760D« »Rec77/1004.5/54.5/54.5/5 Feb 2015 849- i Canon 760D
Canon 650D« »HiRec77/1004.5/54.5/54.5/5 Jun 2012 849- i Canon 650D
Canon 1100D« »80/10069/1004/54/54.5/5 Feb 2011 449- i Canon 1100D
Canon 550D« »HiRec77/1004/55/54.5/5 Feb 2010 699- i Canon 550D
Canon 500D« »HiRec74/1004.5/55/54.5/5 Mar 2009 799- i Canon 500D
Canon 50D« »HiRecHiRec4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
Canon 450D« »HiRecHiRec4/55/54.5/5 Jan 2008 799- i Canon 450D
Canon XSi« »HiRecHiRec4/55/54.5/5 Jan 2008 799- i Canon XSi
Canon 30D« »HiRecHiRecrevrev- Feb 2006 1,399- i Canon 30D
Canon 350D« »80/100HiRecrevrev- Feb 2005 899- i Canon 350D
Canon 20D« »-HiRec-rev- Aug 2004 1,499- i Canon 20D
Nikon D90« »HiRecHiRec4/55/54.5/5 Aug 2008 1,299- i Nikon D90
Nikon D40X« »79/100HiRec4/5rev4/5 Mar 2007 729- i Nikon D40X

Care should be taken when interpreting the review scores above, though. The ratings are only valid when refering to cameras in the same category and of the same age. 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? 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. If the camera you are interested in is not available, kindly get in touch, and I will try to update the database with the necessary infos.

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