Canon SX420 vs XT
The Canon PowerShot SX420 IS and the Canon EOS Rebel XT (labelled Canon 350D in some countries) are two digital cameras that were officially introduced, respectively, in January 2016 and February 2005. The SX420 is a fixed lens compact, while the XT is a DSLR. The cameras are based on a 1/2.3-inch (SX420) and an APS-C (XT) sensor. The SX420 has a resolution of 19.9 megapixels, whereas the XT provides 8 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 PowerShot SX420 IS and the Canon EOS Rebel XT? 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 SX420 and the Canon XT 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 XT is also available in two color-versions, but different ones (black, silver).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon XT is considerably larger (66 percent) than the Canon SX420. In this context, it is worth noting that neither the SX420 nor the XT 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 XT 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 XT and their specifications in the Canon EF Lens Catalog.
Concerning battery life, the SX420 gets 195 shots out of its NB-11LH battery, while the XT can take 400 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. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon SX420||104 mm||69 mm||85 mm||325 g||195||n||Jan 2016||299||ebay.com|
|2.||Canon XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899||ebay.com|
|3.||Canon SX430||104 mm||69 mm||85 mm||323 g||195||n||Jan 2017||299||amazon.com|
|4.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899||ebay.com|
|5.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399||ebay.com|
|6.||Canon G7 X Mark II||106 mm||61 mm||42 mm||319 g||265||n||Feb 2016||699||ebay.com|
|7.||Canon SX620||97 mm||57 mm||28 mm||182 g||295||n||May 2016||279||ebay.com|
|8.||Canon SX720||110 mm||64 mm||36 mm||270 g||250||n||Feb 2016||379||ebay.com|
|9.||Canon G5 X||112 mm||76 mm||44 mm||353 g||210||n||Oct 2015||799||ebay.com|
|10.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749||ebay.com|
|11.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||ebay.com|
|12.||Canon SX410||104 mm||69 mm||85 mm||325 g||185||n||Feb 2015||279||ebay.com|
|13.||Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249||ebay.com|
|14.||Canon SX710||113 mm||66 mm||35 mm||269 g||230||n||Jan 2015||349||ebay.com|
|15.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799||ebay.com|
|16.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899||ebay.com|
|17.||Panasonic ZS70||112 mm||67 mm||41 mm||322 g||380||n||Apr 2017||449||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The SX420 was launched at a lower price than the XT, 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 size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon SX420 features a 1/2.3-inch sensor and the Canon XT an APS-C sensor. The sensor area in the XT is 1075 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.6. The sensor in the SX420 has a native 4:3 aspect ratio, while the one in the XT offers a 3:2 aspect.
In terms of chip-set technology, the SX420 uses a more advanced image processing engine (DIGIC 4+) than the XT (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the Canon SX420 offers a higher resolution of 19.9 megapixels, compared with 8 MP of the Canon XT. 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 6.41μm for the XT). However, it should be noted that the SX420 is much more recent (by 10 years and 10 months) than the XT, 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 XT are 17.3 x 11.5 inches or 43.9 x 29.3 cm for good quality, 13.8 x 9.2 inches or 35.1 x 23.4 cm for very good quality, and 11.5 x 7.7 inches or 29.3 x 19.5 cm for excellent quality prints.
The Canon PowerShot SX420 IS has a native sensitivity range from ISO 100 to ISO 1600. The Canon EOS Rebel XT offers exactly the same ISO settings.
In terms of underlying technology, the SX420 is build around a CCD sensor, while the XT uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|6.||Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.8||11.9||260||62|
|9.||Canon G5 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||471||62|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The SX420 indeed provides movie recording capabilities, while the XT 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 XT 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 SX420 and Canon XT in connection with corresponding information for a sample of similar cameras.
|1.||Canon SX420||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|2.||Canon XT||optical||n||1.8 / 115||fixed||n||1/4000s||3.0/s||Y||n|
|3.||Canon SX430||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|4.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|5.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9/s||Y||Y|
|6.||Canon G7 X Mark II||none||n||3.0 / 1040||tilting||Y||1/2000s||8.0/s||Y||Y|
|7.||Canon SX620||none||n||3.0 / 922||fixed||n||1/2000s||2.5/s||Y||Y|
|8.||Canon SX720||none||n||3.0 / 922||fixed||n||1/3200s||5.9/s||Y||Y|
|9.||Canon G5 X||2360||n||3.0 / 1040||swivel||Y||1/2000s||5.9/s||Y||Y|
|10.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|11.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|12.||Canon SX410||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|13.||Canon SX610||none||n||3.0 / 922||fixed||n||1/2000s||2.5/s||Y||Y|
|14.||Canon SX710||none||n||3.0 / 922||fixed||n||1/3200s||6.0/s||Y||Y|
|15.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|16.||Canon Rebel||optical||n||1.8 / 118||fixed||n||1/4000s||2.5/s||Y||n|
|17.||Panasonic ZS70||1166||n||3.0 / 1040||tilting||Y||1/2000s||10.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
The SX420 writes its imaging data to SDXC cards, while the XT uses 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 PowerShot SX420 IS and Canon EOS Rebel XT and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon SX420||-||mono / mono||-||-||-||2.0||Y||Y||-|
|2.||Canon XT||Y||- / -||-||-||-||2.0||-||-||-|
|3.||Canon SX430||-||mono / mono||-||-||-||2.0||Y||Y||-|
|4.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|5.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|6.||Canon G7 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|7.||Canon SX620||-||mono / mono||-||-||micro||2.0||Y||Y||-|
|8.||Canon SX720||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|9.||Canon G5 X||Y||stereo / mono||-||-||mini||2.0||Y||Y||-|
|10.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|11.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|12.||Canon SX410||-||stereo / mono||-||-||-||2.0||-||-||-|
|13.||Canon SX610||-||- / -||-||-||micro||2.0||Y||Y||-|
|14.||Canon SX710||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|15.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|16.||Canon Rebel||Y||- / -||-||-||-||1.1||-||-||-|
|17.||Panasonic ZS70||-||stereo / mono||-||-||micro||2.0||Y||-||-|
It is notable that the SX420 offers wifi support, while the XT does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Both the SX420 and the XT have been discontinued, but can regularly be found used on ebay. The XT was replaced by the Canon Xti, while the SX420 was followed by the Canon SX430. Further information on the features and operation of the SX420 and XT can be found, respectively, in the Canon SX420 Manual (free pdf) or the online Canon XT Manual.
So what is the bottom line? Is there a clear favorite between the Canon SX420 and the Canon XT? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon PowerShot SX420 IS:
- More detail: Offers more megapixels (19.9 vs 8MP) with a 55% higher linear resolution.
- 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 record not only still images but also 720/25p movies.
- Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (230k vs 115k dots).
- Ready to shoot: Comes with a built-in lens, while the XT requires a separate lens.
- More compact: Is smaller (104x69mm vs 127x94mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the XT).
- Sharper images: Has hand-shake reducing image stabilization built-in.
- 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 10 years and 10 months of technical progress since the XT launch.
Reasons to prefer the Canon EOS Rebel XT:
- 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: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (400 versus 195) out of a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been around for much longer (launched in February 2005).
If the number of relative strengths (bullet points above) is taken as a guide, the SX420 emerges as the winner of the contest (14 : 11 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. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 SX420 and the Canon XT place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the SX420 or the XT. 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 why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 SX420||..||..||..||..||..||3/5||Jan 2016||299||ebay.com|
|2.||Canon XT||..||80/100||..||+ +||o||..||Feb 2005||899||ebay.com|
|3.||Canon SX430||..||..||..||..||3.5/5||3.5/5||Jan 2017||299||amazon.com|
|4.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899||ebay.com|
|5.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399||ebay.com|
|6.||Canon G7 X Mark II||4.5/5||+ +||..||81/100||4.5/5||4.5/5||Feb 2016||699||ebay.com|
|7.||Canon SX620||..||..||..||..||..||4/5||May 2016||279||ebay.com|
|8.||Canon SX720||..||+||..||..||4/5||4.5/5||Feb 2016||379||ebay.com|
|9.||Canon G5 X||5/5||+ +||..||78/100||4.5/5||4.5/5||Oct 2015||799||ebay.com|
|10.||Canon T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749||ebay.com|
|11.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649||ebay.com|
|12.||Canon SX410||..||o||..||..||..||..||Feb 2015||279||ebay.com|
|13.||Canon SX610||..||..||..||..||4/5||4/5||Jan 2015||249||ebay.com|
|14.||Canon SX710||..||+||..||..||4/5||3.5/5||Jan 2015||349||ebay.com|
|15.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799||ebay.com|
|16.||Canon Rebel||..||..||..||+ +||..||..||Aug 2003||899||ebay.com|
|17.||Panasonic ZS70||..||+ +||..||..||4/5||4/5||Apr 2017||449||ebay.com|
|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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 SX420 vs Canon XT
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 SX420||Canon XT|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||24-1008mm f/3.5-6.6||Canon EF mount lenses|
|Launch Date||January 2016||February 2005|
|Launch Price||USD 299||USD 899|
|Sensor Specs||Canon SX420||Canon XT|
|Sensor Format||1/2.3" Sensor||APS-C Sensor|
|Sensor Size||6.17 x 4.55 mm||22.2 x 14.8 mm|
|Sensor Area||28.0735 mm2||328.56 mm2|
|Sensor Diagonal||7.7 mm||26.7 mm|
|Sensor Resolution||19.9 Megapixels||8 Megapixels|
|Image Resolution||5152 x 3864 pixels||3456 x 2304 pixels|
|Pixel Pitch||1.19 μm||6.41 μm|
|Pixel Density||70.91 MP/cm2||2.42 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||720/25p Video||no Video|
|ISO Setting||100 - 1,600 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC 4+||DIGIC II|
|DXO Sensor Quality (score)||..||60|
|DXO Color Depth (bits)||..||21.8|
|DXO Dynamic Range (EV)||..||10.8|
|DXO Low Light (ISO)||..||637|
|Screen Specs||Canon SX420||Canon XT|
|Viewfinder Type||no viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%|
|LCD Framing||Live View|
|Rear LCD Size||3.0inch||1.8inch|
|LCD Resolution||230k dots||115k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon SX420||Canon XT|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Continuous Shooting||0.5 shutter flaps/s||3 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||CF cards|
|Single or Dual Card Slots||Single card slot||Single card slot|
|Connectivity Specs||Canon SX420||Canon XT|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||no HDMI|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Body Specs||Canon SX420||Canon XT|
|Battery Life (CIPA)||195 shots per charge||400 shots per charge|
104 x 69 x 85 mm
(4.1 x 2.7 x 3.3 in)
127 x 94 x 64 mm
(5.0 x 3.7 x 2.5 in)
|Camera Weight||325 g (11.5 oz)||540 g (19.0 oz)|
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