Canon M3 vs Sony RX100 IV
The Canon EOS M3 and the Sony Cyber-shot DSC-RX100 IV are two digital cameras that were announced, respectively, in February 2015 and June 2015. The M3 is a mirrorless interchangeable lens camera, while the RX100 IV is a fixed lens compact. The cameras are based on an APS-C (M3) and an one-inch (RX100 IV) sensor. The Canon has a resolution of 24 megapixels, whereas the Sony provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon M3||Sony RX100 IV|
|Mirrorless system camera||Fixed lens compact camera|
|Canon EF-M mount lenses||24-70mm f/1.8-2.8|
|24 MP, APS-C Sensor||20 MP, 1" Sensor|
|1080/30p Video||4K/30p Video|
|ISO 100-12800 (100-25600)||ISO 125-12800 (80-25600)|
|Viewfinder optional||Electronic viewfinder (2359k dots)|
|3.0" LCD, 1040k dots||3.0" LCD, 1228k dots|
|Tilting touchscreen||Tilting screen (not touch-sensitive)|
|4.2 shutter flaps per second||16 shutter flaps per second|
|250 shots per battery charge||280 shots per battery charge|
|111 x 68 x 44 mm, 366 g||102 x 58 x 41 mm, 298 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS M3 and the Sony Cyber-shot DSC-RX100 IV? 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 Sony RX100 IV 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 RX100 IV 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 Sony RX100 IV is notably smaller (22 percent) than the Canon M3. In this context, it is worth noting that neither the M3 nor the RX100 IV are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 IV 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.
Concerning battery life, the M3 gets 250 shots out of its LP-E17 battery, while the RX100 IV can take 280 images on a single charge of its NP-BX1 power pack. The power pack in the RX100 IV can be charged via the USB port, which can be very convenient when travelling.
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, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Canon M3»||4.4 in||2.7 in||1.7 in||12.9 oz||250||n||Feb 2015||679||Canon M3|
|Sony RX100 IV«||4.0 in||2.3 in||1.6 in||10.5 oz||280||n||Jun 2015||999||Sony RX100 IV|
|Canon M50« »||4.6 in||3.5 in||2.3 in||13.8 oz||235||n||Feb 2018||779||Canon M50|
|Canon M6« »||4.4 in||2.7 in||1.8 in||13.8 oz||295||n||Feb 2017||779||Canon M6|
|Canon M100« »||4.3 in||2.6 in||1.4 in||10.7 oz||295||n||Aug 2017||499||Canon M100|
|Canon M5« »||4.6 in||3.5 in||2.4 in||15.1 oz||295||n||Sep 2016||979||Canon M5|
|Canon G5 X« »||4.4 in||3.0 in||1.7 in||12.5 oz||210||n||Oct 2015||799||Canon G5 X|
|Canon M10« »||4.3 in||2.6 in||1.4 in||10.6 oz||255||n||Oct 2015||499||Canon M10|
|Canon T6i« »||5.2 in||4.0 in||3.1 in||19.6 oz||440||n||Feb 2015||749||Canon T6i|
|Canon T6s« »||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||649||Canon T6s|
|Canon G7 X« »||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699||Canon G7 X|
|Canon M« »||4.3 in||2.6 in||1.3 in||10.5 oz||230||n||Jul 2012||599||Canon M|
|Panasonic FZ1000« »||5.4 in||3.9 in||5.2 in||29.3 oz||360||n||Jun 2014||899||Panasonic FZ1000|
|Sony RX100 VII« »||4.0 in||2.3 in||1.7 in||10.7 oz||260||n||Jul 2019||1,199||Sony RX100 VII|
|Sony RX100 V« »||4.0 in||2.3 in||1.6 in||10.5 oz||220||n||Oct 2016||999||Sony RX100 V|
|Sony RX100 III« »||4.0 in||2.3 in||1.6 in||10.2 oz||320||n||May 2014||799||Sony RX100 III|
|Note: Measurements and pricing do not include easily detachable parts, such as 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. 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 M3 features an APS-C sensor and the Sony RX100 IV an one-inch sensor. The sensor area in the RX100 IV is 65 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24MP, the M3 offers a higher resolution than the RX100 IV (20MP), but the M3 nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 2.41μm for the RX100 IV) due to its larger sensor. However, the RX100 IV is a somewhat more recent model (by 4 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.
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 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Sony RX100 IV are 27.4 x 18.2 inch or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inch or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inch or 46.3 x 30.9 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 Sony Cyber-shot DSC-RX100 IV are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 80-25600.
For many cameras, data on sensor performance has been reported by DXO Mark. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Canon M3||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72||Canon M3|
|Sony RX100 IV||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70||Sony RX100 IV|
|Canon M50||APS-C||24.0||6000||4000||4K/24p||..||..||..||..||Canon M50|
|Canon M6||APS-C||24.0||6000||4000||1080/60p||..||..||..||..||Canon M6|
|Canon M100||APS-C||24.0||6000||4000||1080/60p||23.5||12.9||1272||78||Canon M100|
|Canon M5||APS-C||24.0||6000||4000||1080/60p||23.4||12.4||1262||77||Canon M5|
|Canon G5 X||1-inch||20.0||5472||3648||1080/60p||..||..||..||..||Canon G5 X|
|Canon M10||APS-C||17.9||5184||3456||1080/30p||22.2||11.4||753||65||Canon M10|
|Canon T6i||APS-C||24.0||6000||4000||1080/30p||22.7||12.0||919||71||Canon T6i|
|Canon T6s||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70||Canon T6s|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71||Canon G7 X|
|Canon M||APS-C||17.9||5184||3456||1080/30p||22.1||11.2||827||65||Canon M|
|Panasonic FZ1000||1-inch||20.0||5472||3648||4K/30p||22.1||11.7||517||64||Panasonic FZ1000|
|Sony RX100 VII||1-inch||20.0||5472||3648||4K/30p||21.8||12.4||418||63||Sony RX100 VII|
|Sony RX100 V||1-inch||20.0||5472||3648||4K/30p||22.8||12.4||586||70||Sony RX100 V|
|Sony RX100 III||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67||Sony RX100 III|
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 RX100 IV provides a better video resolution than the M3. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the RX100 IV has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the M3 relies on live view and the rear LCD for framing. 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 Sony RX100 IV, and comparable cameras.
|Canon M3||optional||n||3.0||1040||tilting||Y||1/4000s||4.2||Y||n||Canon M3|
|Sony RX100 IV||2359||n||3.0||1228||tilting||n||1/2000s||16.0||Y||Y||Sony RX100 IV|
|Canon M50||2360||n||3.0||1040||swivel||Y||1/4000s||10.0||Y||n||Canon M50|
|Canon M6||optional||n||3.0||1040||tilting||Y||1/4000s||9.0||Y||n||Canon M6|
|Canon M100||none||n||3.0||1040||tilting||Y||1/4000s||6.1||Y||n||Canon M100|
|Canon M5||2360||n||3.2||1620||tilting||Y||1/4000s||9.0||Y||n||Canon M5|
|Canon G5 X||2360||n||3.0||1040||swivel||Y||1/2000s||5.9||Y||Y||Canon G5 X|
|Canon M10||none||n||3.0||1040||tilting||Y||1/4000s||4.6||Y||n||Canon M10|
|Canon T6i||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T6i|
|Canon T6s||optical||Y||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T6s|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y||Canon G7 X|
|Canon M||none||n||3.0||1040||fixed||Y||1/4000s||4.3||n||n||Canon M|
|Panasonic FZ1000||2359||n||3.0||921||swivel||n||1/4000s||12.0||Y||Y||Panasonic FZ1000|
|Sony RX100 VII||2359||n||3.0||921||tilting||Y||1/2000s||90.0||Y||Y||Sony RX100 VII|
|Sony RX100 V||2359||n||3.0||1229||tilting||n||1/2000s||24.0||Y||Y||Sony RX100 V|
|Sony RX100 III||1440||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y||Sony RX100 III|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The M3 has a touchscreen, while the RX100 IV has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the RX100 IV is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The M3 writes its imaging data to SDXC cards, while the RX100 IV uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 Sony Cyber-shot DSC-RX100 IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon M3||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon M3|
|Sony RX100 IV||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 IV|
|Canon M50||Y||stereo||mono||Y||-||micro||2.0||Y||Y||Y||Canon M50|
|Canon M6||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon M6|
|Canon M100||-||stereo||mono||-||-||mini||2.0||Y||Y||Y||Canon M100|
|Canon M5||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon M5|
|Canon G5 X||Y||stereo||mono||-||-||mini||2.0||Y||Y||-||Canon G5 X|
|Canon M10||-||stereo||mono||-||-||mini||2.0||Y||Y||-||Canon M10|
|Canon T6i||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6i|
|Canon T6s||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6s|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G7 X|
|Canon M||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon M|
|Panasonic FZ1000||Y||stereo||mono||Y||-||micro||2.0||Y||Y||-||Panasonic FZ1000|
|Sony RX100 VII||-||stereo||mono||Y||-||micro||2.0||Y||Y||Y||Sony RX100 VII|
|Sony RX100 V||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 V|
|Sony RX100 III||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 III|
It is notable that the M3 has a hotshoe, while the RX100 IV does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the M3 and the RX100 IV have been discontinued, but can regularly be found used on eBay. The M3 was replaced by the Canon M6, while the RX100 IV was followed by the Sony RX100 IV. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.
So how do things add up? Is the Canon M3 better than the Sony RX100 IV 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 20MP) with a 10% higher linear resolution.
- Better low-light sensitivity: Requires less light for good images (1 stops ISO advantage).
- 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.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been on the market for longer (launched in February 2015).
Arguments in favor of the Sony Cyber-shot DSC-RX100 IV:
- More dynamic range: Captures a broader range of light and dark details (0.8 EV of extra DR).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More detailed LCD: Has a higher resolution rear screen (1228k vs 1040k dots).
- Faster burst: Shoots at higher frequency (16 vs 4.2 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Ready to shoot: Has an integrated lens, whereas the M3 necessitates an extra lens.
- More compact: Is smaller (102x58mm vs 111x68mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the M3).
- Longer lasting: Gets more shots (280 versus 250) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More modern: Was introduced somewhat (4 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the RX100 IV emerges as the winner of the match-up (12 : 9 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 Sony RX100 IV place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Travel-Zoom 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 RX100 IV 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 (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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.
- Canon M3 vs Fujifilm GFX 100
- Canon M3 vs Hasselblad X1D II
- Canon M3 vs Samsung NX500
- Canon M3 vs Sony RX100 III
- Canon SX730 vs Sony RX100 IV
- Fujifilm X-E3 vs Sony RX100 IV
- Leica SL vs Sony RX100 IV
- Nikon D70s vs Sony RX100 IV
- Olympus E-P2 vs Sony RX100 IV
- Panasonic GX8 vs Sony RX100 IV
- Panasonic S1R vs Sony RX100 IV
- Sony A77 vs Sony RX100 IV
Specifications: Canon M3 vs Sony RX100 IV
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||Sony RX100 IV|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Canon EF-M mount lenses||24-70mm f/1.8-2.8|
|Launch Date||February 2015||June 2015|
|Launch Price||USD 679||USD 999|
|Sensor Specs||Canon M3||Sony RX100 IV|
|Sensor Format||APS-C Sensor||1" Sensor|
|Sensor Size||22.3 x 14.9 mm||13.2 x 8.8 mm|
|Sensor Area||332.27 mm2||116.16 mm2|
|Sensor Diagonal||26.8 mm||15.9 mm|
|Sensor Resolution||24 Megapixels||20 Megapixels|
|Image Resolution||6000 x 4000 pixels||5472 x 3648 pixels|
|Pixel Pitch||3.72 μm||2.41 μm|
|Pixel Density||7.22 MP/cm2||17.18 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||4K/30p Video|
|ISO Setting||100-12800 ISO||125-12800 ISO|
|ISO Boost||100-25600 ISO||80-25600 ISO|
|Image Processor||DIGIC 6||BIONZ X|
|DXO Sensor Quality (score)||72||70|
|DXO Color Depth (bits)||22.8||22.8|
|DXO Dynamic Range (EV)||11.8||12.6|
|DXO Low Light (ISO)||1169||591|
|Screen Specs||Canon M3||Sony RX100 IV|
|Viewfinder Type||Viewfinder optional||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2359k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1040k dots||1228k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon M3||Sony RX100 IV|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/2000/s|
|Continuous Shooting||4.2 shutter flaps/s||16 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/32000s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon M3||Sony RX100 IV|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro 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||Sony RX100 IV|
|Battery Life (CIPA)||250 shots per charge||280 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
111 x 68 x 44 mm
(4.4 x 2.7 x 1.7 in)
102 x 58 x 41 mm
(4.0 x 2.3 x 1.6 in)
|Camera Weight||366 g (12.9 oz)||298 g (10.5 oz)|
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