Canon 400D vs SX420
The Canon EOS 400D (called Canon XTi in some regions) and the Canon PowerShot SX420 IS are two digital cameras that were revealed to the public, respectively, in August 2006 and January 2016. The 400D is a DSLR, while the SX420 is a fixed lens compact. The cameras are based on an APS-C (400D) and a 1/2.3-inch (SX420) sensor. The 400D has a resolution of 10.1 megapixels, whereas the SX420 provides 19.9 MP.
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 400D and the Canon PowerShot SX420 IS? 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.
An illustration of the physical size and weight of the Canon 400D and the Canon SX420 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.
The SX420 can be obtained in two different colors (black, red), while the 400D is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SX420 is considerably smaller (33 percent) than the Canon 400D. In this context, it is worth noting that neither the 400D nor the SX420 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX420 has a lens built in, whereas the 400D is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the 400D and their specifications 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 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|2.||Canon SX420||104 mm||69 mm||85 mm||325 g||195||n||Jan 2016||299|
|3.||Canon SX430||104 mm||69 mm||85 mm||323 g||195||n||Jan 2017||299|
|4.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399|
|5.||Canon 750D||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|6.||Canon 760D||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|7.||Canon SX410||104 mm||69 mm||85 mm||325 g||185||n||Feb 2015||279|
|8.||Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249|
|9.||Canon SX710||113 mm||66 mm||35 mm||269 g||230||n||Jan 2015||349|
|10.||Canon 650D||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|11.||Canon 1100D||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|12.||Canon 550D||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699|
|13.||Canon 500D||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|14.||Canon 450D||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|15.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|16.||Canon 350D||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|17.||Nikon D40X||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729|
|Notes: 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 SX420 was launched at a lower price than the 400D, despite having a lens built in. 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.
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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon 400D features an APS-C sensor and the Canon SX420 a 1/2.3-inch sensor. The sensor area in the SX420 is 91 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 5.6. The sensor in the 400D has a native 3:2 aspect ratio, while the one in the SX420 offers a 4:3 aspect.
Technology-wise, the SX420 uses a more advanced image processing engine (DIGIC 4+) than the 400D (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the SX420 offers a higher resolution of 19.9 megapixels, compared with 10.1 MP of the 400D. 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 1.19μm versus 5.71μm for the 400D). However, it should be noted that the SX420 is much more recent (by 9 years and 4 months) than the 400D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the SX420 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon SX420 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX420 for good quality output (200 dots per inch) amounts to 25.8 x 19.3 inches or 65.4 x 49.1 cm, for very good quality (250 dpi) 20.6 x 15.5 inches or 52.3 x 39.3 cm, and for excellent quality (300 dpi) 17.2 x 12.9 inches or 43.6 x 32.7 cm. The corresponding values for the Canon 400D are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.
The Canon EOS 400D has a native sensitivity range from ISO 100 to ISO 1600. The Canon PowerShot SX420 IS offers exactly the same ISO settings.
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. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
| DXO |
Many modern cameras are not only capable of taking still images, but can also record movies. The SX420 indeed provides for movie recording, while the 400D does not. The highest resolution format that the SX420 can use is 720/25p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the 400D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX420 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon 400D and Canon SX420 in connection with corresponding information for a sample of similar cameras.
The 400D writes its imaging data to Compact Flash cards, while the SX420 uses SDXC 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 400D and Canon PowerShot SX420 IS and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
It is notable that the 400D has a hotshoe, while the SX420 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the 400D and the SX420 have been discontinued, but can regularly be found used on eBay. The 400D was replaced by the Canon 450D, while the SX420 was followed by the Canon SX430. 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? Is there a clear favorite between the Canon 400D and the Canon SX420? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon EOS 400D:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Faster burst: Shoots at higher frequency (3 vs 0.5 flaps/sec) to capture the decisive moment.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (370 versus 195) on a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been available for much longer (launched in August 2006).
Reasons to prefer the Canon PowerShot SX420 IS:
- More detail: Has more megapixels (19.9 vs 10.1MP), which boosts linear resolution by 38%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better jpgs: Has a more modern image processing engine (DIGIC 4+ vs DIGIC II).
- Broader imaging potential: Can capture not only stills but also 720/25p video.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- Ready to shoot: Comes with an integrated lens, while the 400D requires a separate lens.
- More compact: Is smaller (104x69mm vs 127x84mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the 400D).
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- 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.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 9 years and 4 months of technical progress since the 400D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the SX420 emerges as the winner of the match-up (13 : 11 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 before making a decision on a new camera. 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 400D and the Canon SX420 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Superzoom Camera listings 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 400D and the SX420 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 ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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 400D||..||+ +||+ +||o||4/5||Aug 2006||799|
|2.||Canon SX420||..||..||..||..||3/5||Jan 2016||299|
|3.||Canon SX430||..||..||..||3.5/5||3.5/5||Jan 2017||299|
|4.||Canon SX730||..||+||..||4/5||4/5||Apr 2017||399|
|5.||Canon 750D||5/5||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|6.||Canon 760D||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|7.||Canon SX410||..||o||..||..||..||Feb 2015||279|
|8.||Canon SX610||..||..||..||4/5||4/5||Jan 2015||249|
|9.||Canon SX710||..||+||..||4/5||3.5/5||Jan 2015||349|
|10.||Canon 650D||4/5||+ +||77/100||4.5/5||4.5/5||Jun 2012||849|
|11.||Canon 1100D||..||80/100||69/100||4/5||4.5/5||Feb 2011||449|
|12.||Canon 550D||..||+ +||77/100||4/5||4.5/5||Feb 2010||699|
|13.||Canon 500D||..||+ +||74/100||4.5/5||4.5/5||Mar 2009||799|
|14.||Canon 450D||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|15.||Canon 40D||..||+ +||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|16.||Canon 350D||..||80/100||+ +||o||..||Feb 2005||899|
|17.||Nikon D40X||..||79/100||+ +||4/5||4/5||Mar 2007||729|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted 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? 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.
Specifications: Canon 400D vs Canon SX420
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 400D||Canon SX420|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-1008mm f/3.5-6.6|
|Launch Date||August 2006||January 2016|
|Launch Price||USD 799||USD 299|
|Sensor Specs||Canon 400D||Canon SX420|
|Sensor Format||APS-C Sensor||1/2.3" Sensor|
|Sensor Size||22.2 x 14.8 mm||6.17 x 4.55 mm|
|Sensor Area||328.56 mm2||28.0735 mm2|
|Sensor Diagonal||26.7 mm||7.7 mm|
|Sensor Resolution||10.1 Megapixels||19.9 Megapixels|
|Image Resolution||3888 x 2592 pixels||5152 x 3864 pixels|
|Pixel Pitch||5.71 μm||1.19 μm|
|Pixel Density||3.07 MP/cm2||70.91 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||720/25p Video|
|ISO Setting||100 - 1,600 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC II||DIGIC 4+|
|DXO Sensor Quality (score)||62||..|
|DXO Color Depth (bits)||22.1||..|
|DXO Dynamic Range (EV)||11.0||..|
|DXO Low Light (ISO)||664||..|
|Screen Specs||Canon 400D||Canon SX420|
|Viewfinder Type||Optical viewfinder||no viewfinder|
|Viewfinder Field of View||95%|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||230k dots||230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 400D||Canon SX420|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||0.5 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 400D||Canon SX420|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||no HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon 400D||Canon SX420|
|Battery Life (CIPA)||370 shots per charge||195 shots per charge|
127 x 84 x 65 mm
(5.0 x 3.3 x 2.6 in)
104 x 69 x 85 mm
(4.1 x 2.7 x 3.3 in)
|Camera Weight||556 g (19.6 oz)||325 g (11.5 oz)|
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