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Canon 400D versus Canon 750D

The Canon 400D (called Canon XTi in some regions) and the Canon EOS 750D (labelled Canon T6i in some countries) are two digital cameras that were officially introduced, respectively, in August 2006 and February 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 400D has a resolution of 10.1 megapixel, whereas the 750D provides 24 MP.

Body comparison

The physical size and weight of the Canon 400D and the Canon 750D are illustrated in the side-by-side display below. 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 you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the 400D – represents the basis or 100 percent across all the size and weight measures).

Canon 400D vs Canon 750D front
400D versus 750D top view
400D and 750D rear side
Body view (400D on the left)

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 750D is considerably larger (122 percent) than the Canon 400D. However, the 750D is slightly lighter (0 percent) than the 400D. In this context, it is worth noting that neither the 400D nor the 750D 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.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon 400D (⇒ rgt) 127 mm 84 mm 65 mm 556 g 370 no 2006 799discont. check
Canon 750D (⇒ lft) 132 mm 101 mm 78 mm 555 g 440 no 2015 749discont. check
Canon 800D (⇒ lft | rgt) 131 mm 100 mm 76 mm 532 g 600 no 2017 749 latest check
Canon 77D (⇒ lft | rgt) 131 mm 100 mm 76 mm 540 g 600 no 2017 899 latest check
Canon 760D (⇒ lft | rgt) 132 mm 101 mm 78 mm 565 g 440 no 2015 849discont. check
Canon M3 (⇒ lft | rgt) 111 mm 68 mm 44 mm 366 g 250 no 2015 679discont. check
Canon 700D (⇒ lft | rgt) 133 mm 100 mm 79 mm 580 g 440 no 2013 649discont. check
Canon 650D (⇒ lft | rgt) 133 mm 100 mm 79 mm 575 g 440 no 2012 849discont. check
Canon 1100D (⇒ lft | rgt) 130 mm 100 mm 78 mm 495 g 700 no 2011 449discont. check
Canon 550D (⇒ lft | rgt) 129 mm 98 mm 62 mm 530 g 440 no 2010 699discont. check
Canon 500D (⇒ lft | rgt) 129 mm 98 mm 62 mm 520 g 400 no 2009 799discont. check
Canon 450D (⇒ lft | rgt) 129 mm 98 mm 62 mm 524 g 500 no 2008 799discont. check
Canon 40D (⇒ lft | rgt) 146 mm 108 mm 74 mm 822 g 750 no 2007 1,299discont. check
Canon 350D (⇒ lft | rgt) 127 mm 94 mm 64 mm 540 g 400 no 2005 899discont. check
Canon 300D (⇒ lft | rgt) 142 mm 99 mm 72 mm 649 g 400 no 2003 899discont. check

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 750D was somewhat cheaper (by 6 percent) than the 400D at launch, but both cameras fall into the same price category. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels 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 are more costly to manufacture and tent 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 750D 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.

Canon 400D and Canon 750D sensor measures
Sensor size

With 24MP, the 750D offers a higher resolution than the 400D (10.1MP), but the 750D has smaller individual pixels (pixel pitch of 3.72μm versus 5.71μm for the 400D). Yet, the 750D is a much more recent model (by 8 years and 5 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.

400D versus 750D MP
Sensor resolution

For most cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under consideration, the 750D has a markedly higher DXO score than the 400D (overall score 9 points higher), which will translate into better image quality. The advantage is based on 0.6 bits higher color depth, 1 EV in additional dynamic range, and 0.5 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.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon 400D (⇒ rgt) APS-C 10.1 3888 2592 no 22.1 11.0 664 62
Canon 750D (⇒ lft) APS-C 24.0 6000 4000 1080/60p 22.7 12.0 919 71
Canon 800D (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p .. .. .. ..
Canon 77D (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p .. .. .. ..
Canon 760D (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/30p 22.6 12.0 915 70
Canon M3 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/30p 22.8 11.8 1169 72
Canon 700D (⇒ lft | rgt) APS-C 17.9 5184 3456 1080/30p 21.7 11.2 681 61
Canon 650D (⇒ lft | rgt) APS-C 17.9 5184 3456 1080/30p 21.7 11.2 722 62
Canon 1100D (⇒ lft | rgt) APS-C 12.2 4272 2848 720/30p 21.9 11.0 755 62
Canon 550D (⇒ lft | rgt) APS-C 17.9 5184 3456 1080/30p 22.1 11.5 784 66
Canon 500D (⇒ lft | rgt) APS-C 15.1 4752 3168 1080/20p 21.7 11.5 663 63
Canon 450D (⇒ lft | rgt) APS-C 12.2 4272 2848 no 21.9 10.8 692 61
Canon 40D (⇒ lft | rgt) APS-C 10.1 3888 2592 no 22.1 11.3 703 64
Canon 350D (⇒ lft | rgt) APS-C 8.0 3456 2304 no 21.8 10.8 637 60
Canon 300D (⇒ lft | rgt) APS-C 6.3 3072 2048 no 21.0 10.8 544 55

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The 750D indeed provides for movie recording, while the 400D does not. The highest resolution format that the 750D can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The 400D and the 750D 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 following table reports on some other key feature differences and similarities of the Canon 400D, the Canon 750D, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Canon 400D (⇒ rgt) optical no 2.5 230 fixed no 4000 3.0 YES no
Canon 750D (⇒ lft) optical no 3.0 1040 swivel YES 4000 5.0 12 no
Canon 800D (⇒ lft | rgt) optical no 3.0 1040 swivel YES 4000 6.0 12 no
Canon 77D (⇒ lft | rgt) optical YES 3.0 1040 swivel YES 4000 6.0 12 no
Canon 760D (⇒ lft | rgt) optical YES 3.0 1040 swivel YES 4000 5.0 12 no
Canon M3 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 4.2 5 no
Canon 700D (⇒ lft | rgt) optical no 3.0 1040 swivel YES 4000 5.0 13 no
Canon 650D (⇒ lft | rgt) optical no 3 1040 swivel YES 4000 5.0 YES no
Canon 1100D (⇒ lft | rgt) optical no 2.7 230 fixed no 4000 3.0 9.2 no
Canon 550D (⇒ lft | rgt) optical no 3.0 1040 fixed no 4000 3.7 YES no
Canon 500D (⇒ lft | rgt) optical no 3.0 920 fixed no 4000 3.4 YES no
Canon 450D (⇒ lft | rgt) optical no 3.0 230 fixed no 4000 3.5 YES no
Canon 40D (⇒ lft | rgt) optical YES 3.0 230 fixed no 8000 6.5 12 no
Canon 350D (⇒ lft | rgt) optical no 1.8 115 fixed no 4000 3.0 YES no
Canon 300D (⇒ lft | rgt) optical no 1.8 118 fixed no 4000 2.5 YES no

Both the 400D and the 750D have been discontinued, but can regularly be found used on ebay. The 400D was replaced by the Canon 450D, while the 750D was followed by the Canon 800D.

Summary

So how do things add up? Is the Canon 400D better than the Canon 750D or vice versa? A synthesis of the relative strong points of each of the models is listed below.


Reasons to prefer the Canon 400D:

  • More compact: Is smaller (127x84mm vs 132x101mm) and thus needs less room in the bag.
  • More heavily discounted: Has been available for much longer (launched in August 2006).

Arguments in favor of the Canon EOS 750D:

  • More detail: Has more megapixels (24 vs 10.1MP), which boosts linear resolution by 54%.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.5 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60p video.
  • 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 swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (440 versus 370) out of a single battery charge.
  • More modern: Reflects 8 years and 5 months of technical progress since the 400D launch.

If the number of relative strengths (bullet points above) is taken as a guide, the 750D is the clear winner of the contest (12 : 2 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features.

400D 02:12 750D

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the 400D or the 750D. 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 following table reports the overall rankings of the cameras as published by some of the major camera review sites. You can find the full text of the reviews, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
dp
review
ephoto
zine
imaging
resource
photography
blog
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon 400D (⇒ rgt) 85/100 HiRec HiRec reviewed 4.5/5 4/5 2006 799discont. check
Canon 750D (⇒ lft) - 75/100 4.5/5 4.5/5 4.5/5 2015 749discont. check
Canon 800D (⇒ lft | rgt) .. 80/100 Gold 4.5/5 .. 4/5 2017 749 latest check
Canon 77D (⇒ lft | rgt) .. 82/100 Silver 4.5/5 .. 4/5 2017 899 latest check
Canon 760D (⇒ lft | rgt) Rec 77/100 Silver 4.5/5 4.5/5 4.5/5 2015 849discont. check
Canon M3 (⇒ lft | rgt) reviewed 75/100 4.5/5 4.5/5 4/5 2015 679discont. check
Canon 700D (⇒ lft | rgt) - 76/100 Silver 4.5/5 4.5/5 4.5/5 2013 649discont. check
Canon 650D (⇒ lft | rgt) HiRec 77/100 Silver 4.5/5 4.5/5 4.5/5 2012 849discont. check
Canon 1100D (⇒ lft | rgt) 80/100 69/100 4/5 4/5 4.5/5 2011 449discont. check
Canon 550D (⇒ lft | rgt) 88/100 HiRec 77/100 Gold 4/5 5/5 4.5/5 2010 699discont. check
Canon 500D (⇒ lft | rgt) 88/100 HiRec 74/100 HiRec 4.5/5 5/5 4.5/5 2009 799discont. check
Canon 450D (⇒ lft | rgt) 88/100 HiRec HiRec 4/5 5/5 4.5/5 2008 799discont. check
Canon 40D (⇒ lft | rgt) 90/100 HiRec HiRec 4.5/5 reviewed 4.5/5 2007 1,299discont. check
Canon 350D (⇒ lft | rgt) 80/100 HiRec reviewed reviewed - 2005 899discont. check
Canon 300D (⇒ lft | rgt) - HiRec - reviewed - 2003 899discont. check

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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Other comparisons

In case you would like to check on the differences and similarities of other camera models, just use the search menu below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, kindly get in touch, and I will try to locate and add the respective data to the application.

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