Canon M3 vs Olympus E-400
The Canon EOS M3 and the Olympus E-400 are two digital cameras that were announced, respectively, in February 2015 and September 2006. The M3 is a mirrorless interchangeable lens camera, while the E-400 is a DSLR. The cameras are based on an APS-C (M3) and a Four Thirds (E-400) sensor. The Canon has a resolution of 24 megapixels, whereas the Olympus provides 10 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon M3||Olympus E-400|
|Mirrorless system camera||Digital single lens reflex|
|Canon EF-M mount lenses||Four Thirds lenses|
|24 MP, APS-C Sensor||10 MP, Four Thirds Sensor|
|1080/30p Video||no Video|
|ISO 100-12800 (100-25600)||ISO 100-1600|
|Viewfinder optional||Optical viewfinder|
|3.0" LCD, 1040k dots||2.5" LCD, 215k dots|
|Tilting touchscreen||Fixed screen (not touch-sensitive)|
|4.2 shutter flaps per second||3 shutter flaps per second|
|250 shots per battery charge||500 shots per battery charge|
|111 x 68 x 44 mm, 366 g||130 x 91 x 53 mm, 435 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS M3 and the Olympus E-400? 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 Olympus E-400 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 width, height and depth dimensions are rounded to the nearest millimeter.
The M3 can be obtained in two different colors (black, white), while the E-400 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 Olympus E-400 is considerably larger (57 percent) than the Canon M3. Moreover, the E-400 is markedly heavier (19 percent) than the M3. In this context, it is worth noting that neither the M3 nor the E-400 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 camera comparisons there.
|Canon M3»||4.4 in||2.7 in||1.7 in||12.9 oz||250||n||Feb 2015||679||Canon M3|
|Olympus E-400«||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Sep 2006||699||Olympus E-400|
|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|
|Olympus E-420« »||5.1 in||3.6 in||2.1 in||15.5 oz||500||n||Mar 2008||599||Olympus E-420|
|Olympus E-410« »||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Mar 2007||699||Olympus E-410|
|Olympus E-510« »||5.4 in||3.6 in||2.7 in||19.0 oz||750||n||Mar 2007||799||Olympus E-510|
|Olympus E-500« »||5.1 in||3.7 in||2.6 in||16.9 oz||750||n||Sep 2005||599||Olympus E-500|
|Panasonic L10« »||5.3 in||3.8 in||3.1 in||19.6 oz||450||n||Aug 2007||599||Panasonic L10|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. 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 M3 was somewhat cheaper (by 3 percent) than the E-400 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.
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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon M3 features an APS-C sensor and the Olympus E-400 a Four Thirds sensor. The sensor area in the E-400 is 32 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the M3 has a native 3:2 aspect ratio, while the one in the E-400 offers a 4:3 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
With 24MP, the M3 offers a higher resolution than the E-400 (10MP), but the M3 has smaller individual pixels (pixel pitch of 3.72μm versus 4.74μm for the E-400). However, the M3 is a much more recent model (by 8 years and 4 months) than the E-400, and its sensor will 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 Olympus E-400 are 18.2 x 13.7 inch or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inch or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inch or 30.9 x 23.2 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 Olympus E-400 are ISO 100 to ISO 1600 (no boost).
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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Canon M3||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72||Canon M3|
|Olympus E-400||Four Thirds||10.0||3648||2736||none||..||..||..||..||Olympus E-400|
|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|
|Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56||Olympus E-420|
|Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51||Olympus E-410|
|Olympus E-510||Four Thirds||10.0||3648||2736||none||21.2||10.0||442||52||Olympus E-510|
|Olympus E-500||Four Thirds||8.0||3264||2448||none||..||..||..||..||Olympus E-500|
|Panasonic L10||Four Thirds||10.0||3648||2736||none||21.3||10.8||429||55||Panasonic L10|
Many modern cameras are not only capable of taking still images, but can also record movies. The M3 indeed provides movie recording capabilities, while the E-400 does not. The highest resolution format that the M3 can use is 1080/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-400 has an optical viewfinder, which can be very useful 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 Olympus E-400, and comparable cameras.
|Canon M3||optional||n||3.0||1040||tilting||Y||1/4000s||4.2||Y||n||Canon M3|
|Olympus E-400||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||n||Olympus E-400|
|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|
|Olympus E-420||optical||n||2.7||215||fixed||n||1/4000s||3.5||Y||n||Olympus E-420|
|Olympus E-410||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||n||Olympus E-410|
|Olympus E-510||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||Y||Olympus E-510|
|Olympus E-500||optical||n||2.5||215||fixed||n||1/4000s||2.5||Y||n||Olympus E-500|
|Panasonic L10||optical||n||2.5||207||swivel||n||1/4000s||3.0||Y||n||Panasonic L10|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The M3 has a touchscreen, while the E-400 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 E-400 does not have a selfie-screen.
The M3 writes its imaging data to SDXC cards, while the E-400 uses Compact Flash or xD Picture cards. The E-400 features dual card slots, which can be very useful in case a memory card fails. In contrast, the M3 only has one slot.
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 Olympus E-400 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|
|Olympus E-400||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-400|
|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|
|Olympus E-420||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-420|
|Olympus E-410||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-410|
|Olympus E-510||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-510|
|Olympus E-500||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-500|
|Panasonic L10||Y||none||none||-||-||none||2.0||-||-||-||Panasonic L10|
It is notable that the M3 offers wifi support, while the E-400 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Both the M3 and the E-400 have been discontinued, but can regularly be found used on eBay. The E-400 was replaced by the Olympus E-410, while the M3 was followed by the Canon M6. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Olympus websites.
So what conclusions can be drawn? Which of the two cameras – the Canon M3 or the Olympus E-400 – has the upper hand? Is one clearly better than the other? 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 10MP) with a 58% higher linear resolution.
- Better image quality: Features a larger and more technologically advanced imaging sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Broader imaging potential: Can record not only still images but also 1080/30p movies.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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 215k 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 3 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (111x68mm vs 130x91mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 69g or 16 percent) and hence easier to carry around.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- 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 modern: Reflects 8 years and 4 months of technical progress since the E-400 launch.
Arguments in favor of the Olympus E-400:
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Longer lasting: Gets more shots (500 versus 250) out of a single battery charge.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been around for much longer (launched in September 2006).
If the count of individual advantages (bullet points above) is taken as a guide, the M3 is the clear winner of the match-up (19 : 4 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 M3 and the Olympus E-400 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the M3 and the E-400 in practical situations. 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 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 (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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
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 M3 vs Olympus E-400
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||Olympus E-400|
|Camera Type||Mirrorless system camera||Digital single lens reflex|
|Camera Lens||Canon EF-M mount lenses||Four Thirds lenses|
|Launch Date||February 2015||September 2006|
|Launch Price||USD 679||USD 699|
|Sensor Specs||Canon M3||Olympus E-400|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||22.3 x 14.9 mm||17.3 x 13.0 mm|
|Sensor Area||332.27 mm2||224.9 mm2|
|Sensor Diagonal||26.8 mm||21.6 mm|
|Sensor Resolution||24 Megapixels||10 Megapixels|
|Image Resolution||6000 x 4000 pixels||3648 x 2736 pixels|
|Pixel Pitch||3.72 μm||4.74 μm|
|Pixel Density||7.22 MP/cm2||4.44 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100-12800 ISO||100-1600 ISO|
|ISO Boost||100-25600 ISO||no Enhancement|
|Image Processor||DIGIC 6||TruePic|
|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||Olympus E-400|
|Viewfinder Type||Viewfinder optional||Optical viewfinder|
|Viewfinder Field of View||95%|
|LCD Framing||Live View|
|Rear LCD Size||3.0 inch||2.5 inch|
|LCD Resolution||1040k dots||215k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon M3||Olympus E-400|
|Focus System||On-Sensor Phase-detect||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||No Peaking Feature|
|Continuous Shooting||4.2 shutter flaps/s||3 shutter flaps/s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||CF or XD cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon M3||Olympus E-400|
|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||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Body Specs||Canon M3||Olympus E-400|
|Battery Life (CIPA)||250 shots per charge||500 shots per charge|
111 x 68 x 44 mm
(4.4 x 2.7 x 1.7 in)
130 x 91 x 53 mm
(5.1 x 3.6 x 2.1 in)
|Camera Weight||366 g (12.9 oz)||435 g (15.3 oz)|
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