Canon M3 vs SX420
The Canon EOS M3 and the Canon PowerShot SX420 IS are two digital cameras that were revealed to the public, respectively, in February 2015 and January 2016. The M3 is a mirrorless interchangeable lens camera, while the SX420 is a fixed lens compact. The cameras are based on an APS-C (M3) and a 1/2.3-inch (SX420) sensor. The M3 has a resolution of 24 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 M3 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 M3 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 views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The M3 can be obtained in two different colors (black, white), while the SX420 is also available in two color-versions, but different ones (black, red).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SX420 is notably smaller (5 percent) than the Canon M3. In this context, it is worth noting that neither the M3 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 M3 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
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 M3||111 mm||68 mm||44 mm||366 g||250||n||Feb 2015||679|
|2.||Canon SX420||104 mm||69 mm||85 mm||325 g||195||n||Jan 2016||299|
|3.||Canon M50 Mark II||116 mm||88 mm||59 mm||387 g||305||n||Oct 2020||599|
|4.||Canon M50||116 mm||88 mm||59 mm||390 g||235||n||Feb 2018||779|
|5.||Canon SX430||104 mm||69 mm||85 mm||323 g||195||n||Jan 2017||299|
|6.||Canon M6||112 mm||68 mm||45 mm||390 g||295||n||Feb 2017||779|
|7.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499|
|8.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399|
|9.||Canon M5||116 mm||89 mm||61 mm||427 g||295||n||Sep 2016||979|
|10.||Canon M10||108 mm||67 mm||35 mm||301 g||255||n||Oct 2015||499|
|11.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|12.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|13.||Canon SX410||104 mm||69 mm||85 mm||325 g||185||n||Feb 2015||279|
|14.||Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249|
|15.||Canon SX710||113 mm||66 mm||35 mm||269 g||230||n||Jan 2015||349|
|16.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699|
|17.||Canon M||109 mm||66 mm||32 mm||298 g||230||n||Jul 2012||599|
|Notes: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX420 was launched at a lower price than the M3, 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 imaging sensor is a crucial determinant 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon M3 features an APS-C sensor and the Canon SX420 a 1/2.3-inch sensor. The sensor area in the SX420 is 92 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 M3 has a native 3:2 aspect ratio, while the one in the SX420 offers a 4:3 aspect.
In terms of chip-set technology, the M3 uses a more advanced image processing engine (DIGIC 6) than the SX420 (DIGIC 4+), with benefits for noise reduction, color accuracy, and processing speed.
With 24MP, the M3 offers a higher resolution than the SX420 (19.9MP), but the M3 nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 1.19μm for the SX420) due to its larger sensor. However, the SX420 is a somewhat more recent model (by 10 months) than the M3, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. 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 M3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the M3 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon SX420 are 25.8 x 19.3 inches or 65.4 x 49.1 cm for good quality, 20.6 x 15.5 inches or 52.3 x 39.3 cm for very good quality, and 17.2 x 12.9 inches or 43.6 x 32.7 cm for excellent quality prints.
The M3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS M3 has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Canon PowerShot SX420 IS are ISO 100 to ISO 1600 (no boost).
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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|3.||Canon M50 Mark II||APS-C||24.0||6000||4000||4K/24p||..||..||..||..|
|16.||Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the M3 provides a higher video resolution than the SX420. It can shoot video footage at 1080/30p, while the SX420 is limited to 720/25p.
Beyond body and sensor, cameras can and do differ across a range of features. The M3 and the SX420 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. That said, the M3 can be equipped with an optional viewfinder – the EVF-DC1. The following table reports on some other key feature differences and similarities of the Canon M3, the Canon SX420, and comparable cameras.
|1.||Canon M3||optional||n||3.0 / 1040||tilting||Y||1/4000s||4.2||Y||n|
|2.||Canon SX420||none||n||3.0 / 230||fixed||n||1/4000s||0.5||Y||Y|
|3.||Canon M50 Mark II||2360||n||3.0 / 1040||swivel||Y||1/4000s||10.0||Y||n|
|4.||Canon M50||2360||n||3.0 / 1040||swivel||Y||1/4000s||10.0||Y||n|
|5.||Canon SX430||none||n||3.0 / 230||fixed||n||1/4000s||0.5||Y||Y|
|6.||Canon M6||optional||n||3.0 / 1040||tilting||Y||1/4000s||9.0||Y||n|
|7.||Canon M100||none||n||3.0 / 1040||tilting||Y||1/4000s||6.1||Y||n|
|8.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9||Y||Y|
|9.||Canon M5||2360||n||3.2 / 1620||tilting||Y||1/4000s||9.0||Y||n|
|10.||Canon M10||none||n||3.0 / 1040||tilting||Y||1/4000s||4.6||Y||n|
|11.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|12.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|13.||Canon SX410||none||n||3.0 / 230||fixed||n||1/4000s||0.5||Y||Y|
|14.||Canon SX610||none||n||3.0 / 922||fixed||n||1/2000s||2.5||Y||Y|
|15.||Canon SX710||none||n||3.0 / 922||fixed||n||1/3200s||6.0||Y||Y|
|16.||Canon G7 X||none||n||3.0 / 1040||tilting||Y||1/2000s||6.5||Y||Y|
|17.||Canon M||none||n||3.0 / 1040||fixed||Y||1/4000s||4.3||n||n|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The M3 has a touchscreen, while the SX420 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The M3 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the SX420 does not have a selfie-screen.
Concerning the storage of imaging data, both the M3 and the SX420 write their files to SDXC cards. The M3 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the SX420 cannot take advantage of Ultra High Speed SD 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 M3 and Canon PowerShot SX420 IS and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon M3||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|2.||Canon SX420||-||mono / mono||-||-||-||2.0||Y||Y||-|
|3.||Canon M50 Mark II||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|4.||Canon M50||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|5.||Canon SX430||-||mono / mono||-||-||-||2.0||Y||Y||-|
|6.||Canon M6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|7.||Canon M100||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|8.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|9.||Canon M5||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|10.||Canon M10||-||stereo / mono||-||-||mini||2.0||Y||Y||-|
|11.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|12.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|13.||Canon SX410||-||stereo / mono||-||-||-||2.0||-||-||-|
|14.||Canon SX610||-||- / -||-||-||micro||2.0||Y||Y||-|
|15.||Canon SX710||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Canon G7 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|17.||Canon M||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the M3 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 M3 and the SX420 have been discontinued, but can regularly be found used on eBay. The M3 was replaced by the Canon M6, 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 the Canon M3 better than the Canon SX420 or vice versa? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS M3:
- More detail: Offers more megapixels (24 vs 19.9MP) with a 12% higher linear resolution.
- 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.
- Better jpgs: Has a more modern image processing engine (DIGIC 6 vs DIGIC 4+).
- Better video: Provides higher definition movie capture (1080/30p vs 720/25p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- More framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (4.2 vs 0.5 flaps/sec) to capture the decisive moment.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Longer lasting: Can take more shots (250 versus 195) on a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More heavily discounted: Has been on the market for longer (launched in February 2015).
Arguments in favor of the Canon PowerShot SX420 IS:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Ready to shoot: Has an integrated lens, whereas the M3 necessitates an extra lens.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the M3).
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Was introduced somewhat (10 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the M3 is the clear winner of the match-up (21 : 6 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 M3 and the Canon SX420 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Superzoom 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 incomplete and does no justice, for example, to the way the M3 or the SX420 perform in practice. 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 M3||4/5||o||..||75/100||4.5/5||4/5||Feb 2015||679|
|2.||Canon SX420||..||..||..||..||..||3/5||Jan 2016||299|
|3.||Canon M50 Mark II||4/5||..||4/5||..||4.5/5||3.5/5||Oct 2020||599|
|4.||Canon M50||..||+||4/5||79/100||..||3.5/5||Feb 2018||779|
|5.||Canon SX430||..||..||..||..||3.5/5||3.5/5||Jan 2017||299|
|6.||Canon M6||..||..||..||80/100||4/5||4/5||Feb 2017||779|
|7.||Canon M100||3/5||+||..||..||4/5||3.5/5||Aug 2017||499|
|8.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399|
|9.||Canon M5||4/5||+||4/5||82/100||4/5||4/5||Sep 2016||979|
|10.||Canon M10||..||..||..||..||..||4/5||Oct 2015||499|
|11.||Canon T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|12.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649|
|13.||Canon SX410||..||o||..||..||..||..||Feb 2015||279|
|14.||Canon SX610||..||..||..||..||4/5||4/5||Jan 2015||249|
|15.||Canon SX710||..||+||..||..||4/5||3.5/5||Jan 2015||349|
|16.||Canon G7 X||4/5||+ +||..||77/100||4.5/5||4.5/5||Sep 2014||699|
|17.||Canon M||3/5||+||..||..||4/5||4/5||Jul 2012||599|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time 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? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Canon M3 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 M3||Canon SX420|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Canon EF-M mount lenses||24-1008mm f/3.5-6.6|
|Launch Date||February 2015||January 2016|
|Launch Price||USD 679||USD 299|
|Sensor Specs||Canon M3||Canon SX420|
|Sensor Format||APS-C Sensor||1/2.3" Sensor|
|Sensor Size||22.3 x 14.9 mm||6.17 x 4.55 mm|
|Sensor Area||332.27 mm2||28.0735 mm2|
|Sensor Diagonal||26.8 mm||7.7 mm|
|Sensor Resolution||24 Megapixels||19.9 Megapixels|
|Image Resolution||6000 x 4000 pixels||5152 x 3864 pixels|
|Pixel Pitch||3.72 μm||1.19 μm|
|Pixel Density||7.22 MP/cm2||70.91 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/30p Video||720/25p Video|
|ISO Setting||100 - 12,800 ISO||100 - 1,600 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 6||DIGIC 4+|
|DXO Sensor Quality (score)||72||..|
|DXO Color Depth (bits)||22.8||..|
|DXO Dynamic Range (EV)||11.8||..|
|DXO Low Light (ISO)||1169||..|
|Screen Specs||Canon M3||Canon SX420|
|Viewfinder Type||Viewfinder optional||no viewfinder|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||230k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon M3||Canon SX420|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||4.2 shutter flaps/s||0.5 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||no|
|Connectivity Specs||Canon M3||Canon SX420|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Body Specs||Canon M3||Canon SX420|
|Battery Life (CIPA)||250 shots per charge||195 shots per charge|
111 x 68 x 44 mm
(4.4 x 2.7 x 1.7 in)
104 x 69 x 85 mm
(4.1 x 2.7 x 3.3 in)
|Camera Weight||366 g (12.9 oz)||325 g (11.5 oz)|
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