Canon 300D vs M3
The Canon EOS 300D (called Canon Rebel in some regions) and the Canon EOS M3 are two digital cameras that were officially introduced, respectively, in August 2003 and February 2015. The 300D is a DSLR, while the M3 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The 300D has a resolution of 6.3 megapixels, whereas the M3 provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 300D||Canon M3|
|Digital single lens reflex||Mirrorless system camera|
|Canon EF mount lenses||Canon EF-M mount lenses|
|6.3 MP, APS-C Sensor||24 MP, APS-C Sensor|
|no Video||1080/30p Video|
|ISO 100-1600||ISO 100-12800 (100-25600)|
|Optical viewfinder||Viewfinder optional|
|1.8" LCD, 118k dots||3.0" LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Tilting touchscreen|
|2.5 shutter flaps per second||4.2 shutter flaps per second|
|400 shots per battery charge||250 shots per battery charge|
|142 x 99 x 72 mm, 649 g||111 x 68 x 44 mm, 366 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 300D and the Canon EOS M3? 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.
The side-by-side display below illustrates the physical size and weight of the Canon 300D and the Canon M3. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.
The M3 can be obtained in two different colors (black, white), while the 300D is only available in silver.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon M3 is considerably smaller (46 percent) than the Canon 300D. Moreover, the M3 is substantially lighter (44 percent) than the 300D. In this context, it is worth noting that neither the 300D nor the M3 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 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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Canon 300D»||5.6 in||3.9 in||2.8 in||22.9 oz||400||n||Aug 2003||899||Canon 300D|
|Canon M3«||4.4 in||2.7 in||1.7 in||12.9 oz||250||n||Feb 2015||679||Canon M3|
|Canon 77D« »||5.2 in||3.9 in||3.0 in||19.0 oz||600||n||Feb 2017||899||Canon 77D|
|Canon M6« »||4.4 in||2.7 in||1.8 in||13.8 oz||295||n||Feb 2017||779||Canon M6|
|Canon M5« »||4.6 in||3.5 in||2.4 in||15.1 oz||295||n||Sep 2016||979||Canon M5|
|Canon T6s« »||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||649||Canon T6s|
|Canon G1 X Mark II« »||4.6 in||2.9 in||2.6 in||19.5 oz||240||n||Feb 2014||799||Canon G1 X Mark II|
|Canon G7 X« »||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699||Canon G7 X|
|Canon 700D« »||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649||Canon 700D|
|Canon 650D« »||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849||Canon 650D|
|Canon G1 X« »||4.6 in||3.2 in||2.6 in||18.8 oz||250||n||Jan 2012||799||Canon G1 X|
|Canon M« »||4.3 in||2.6 in||1.3 in||10.5 oz||230||n||Jul 2012||599||Canon M|
|Canon 400D« »||5.0 in||3.3 in||2.6 in||19.6 oz||370||n||Aug 2006||799||Canon 400D|
|Canon 350D« »||5.0 in||3.7 in||2.5 in||19.0 oz||400||n||Feb 2005||899||Canon 350D|
|Canon 20D« »||5.7 in||4.2 in||2.8 in||27.2 oz||700||n||Aug 2004||1,499||Canon 20D|
|Canon 10D« »||5.9 in||4.2 in||3.0 in||30.0 oz||500||n||Feb 2003||1,999||Canon 10D|
|Nikon D70« »||5.5 in||4.4 in||3.1 in||24.0 oz||400||n||Jan 2004||999||Nikon D70|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. 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 M3 was launched at a somewhat lower price (by 24 percent) than the 300D, which makes it more attractive for photographers on a tight budget. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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.
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 associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the M3 is 3 percent smaller. They nevertheless have the same format factor of 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the M3 uses a more advanced image processing engine (DIGIC 6) than the 300D (DIGIC), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a slightly smaller sensor, the M3 offers a higher resolution of 24 megapixels, compared with 6.3 MP of the 300D. 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 3.72μm versus 7.38μm for the 300D). However, it should be noted that the M3 is much more recent (by 11 years and 5 months) than the 300D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
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 Canon 300D are 15.4 x 10.2 inch or 39 x 26 cm for good quality, 12.3 x 8.2 inch or 31.2 x 20.8 cm for very good quality, and 10.2 x 6.8 inch or 26 x 17.3 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 300D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS M3 are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600.
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"). Of the two cameras under consideration, the M3 offers substantially better image quality than the 300D (overall score 17 points higher). The advantage is based on 1.8 bits higher color depth, 1 EV in additional dynamic range, and 1.1 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Canon 300D||APS-C||6.3||3072||2048||none||21.0||10.8||544||55||Canon 300D|
|Canon M3||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72||Canon M3|
|Canon 77D||APS-C||24.0||6000||4000||1080/60p||23.6||13.3||971||78||Canon 77D|
|Canon M6||APS-C||24.0||6000||4000||1080/60p||..||..||..||..||Canon M6|
|Canon M5||APS-C||24.0||6000||4000||1080/60p||23.4||12.4||1262||77||Canon M5|
|Canon T6s||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70||Canon T6s|
|Canon G1 X Mark II||1.5-inch||13.0||4160||3120||1080/30p||21.5||10.8||581||58||Canon G1 X Mark II|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71||Canon G7 X|
|Canon 700D||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon 700D|
|Canon 650D||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62||Canon 650D|
|Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60||Canon G1 X|
|Canon M||APS-C||17.9||5184||3456||1080/30p||22.1||11.2||827||65||Canon M|
|Canon 400D||APS-C||10.1||3888||2592||none||22.1||11.0||664||62||Canon 400D|
|Canon 350D||APS-C||8.0||3456||2304||none||21.8||10.8||637||60||Canon 350D|
|Canon 20D||APS-C||8.2||3504||2336||none||21.9||11.0||721||62||Canon 20D|
|Canon 10D||APS-C||6.3||3072||2048||none||21.1||10.9||571||57||Canon 10D|
|Nikon D70||APS-C||6.0||3008||2000||none||20.4||10.3||529||50||Nikon D70|
Many modern cameras cannot only take still pictures, but also record videos. The M3 indeed provides for movie recording, while the 300D does not. The highest resolution format that the M3 can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the 300D 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 300D, the Canon M3, and comparable cameras.
|Canon 300D||optical||n||1.8||118||fixed||n||1/4000s||2.5||Y||n||Canon 300D|
|Canon M3||optional||n||3.0||1040||tilting||Y||1/4000s||4.2||Y||n||Canon M3|
|Canon 77D||optical||Y||3.0||1040||swivel||Y||1/4000s||6.0||Y||n||Canon 77D|
|Canon M6||optional||n||3.0||1040||tilting||Y||1/4000s||9.0||Y||n||Canon M6|
|Canon M5||2360||n||3.2||1620||tilting||Y||1/4000s||9.0||Y||n||Canon M5|
|Canon T6s||optical||Y||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T6s|
|Canon G1 X Mark II||optional||n||3.0||1040||tilting||Y||1/4000s||5.2||Y||Y||Canon G1 X Mark II|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y||Canon G7 X|
|Canon 700D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 700D|
|Canon 650D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 650D|
|Canon G1 X||optical||n||3.0||922||Swivel||n||1/4000s||1.9||Y||Y||Canon G1 X|
|Canon M||none||n||3.0||1040||fixed||Y||1/4000s||4.3||n||n||Canon M|
|Canon 400D||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Canon 400D|
|Canon 350D||optical||n||1.8||115||fixed||n||1/4000s||3.0||Y||n||Canon 350D|
|Canon 20D||optical||Y||1.8||118||fixed||n||1/8000s||5.0||Y||n||Canon 20D|
|Canon 10D||optical||Y||1.8||118||fixed||n||1/4000s||3.0||Y||n||Canon 10D|
|Nikon D70||optical||n||1.8||130||fixed||n||1/8000s||3.0||Y||n||Nikon D70|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The M3 has a touchscreen, while the 300D has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The M3 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 300D does not have a selfie-screen.
The 300D writes its imaging data to Compact Flash cards, while the M3 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 300D and Canon EOS M3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 300D||Y||none||none||-||-||none||1.1||-||-||-||Canon 300D|
|Canon M3||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon M3|
|Canon 77D||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 77D|
|Canon M6||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon M6|
|Canon M5||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon M5|
|Canon T6s||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6s|
|Canon G1 X Mark II||Y||stereo||mono||-||-||mini||2.0||Y||Y||-||Canon G1 X Mark II|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G7 X|
|Canon 700D||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 700D|
|Canon 650D||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 650D|
|Canon G1 X||Y||stereo||mono||-||-||mini||2.0||-||-||-||Canon G1 X|
|Canon M||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon M|
|Canon 400D||Y||none||none||-||-||none||2.0||-||-||-||Canon 400D|
|Canon 350D||Y||none||none||-||-||none||2.0||-||-||-||Canon 350D|
|Canon 20D||Y||none||none||-||-||none||1.1||-||-||-||Canon 20D|
|Canon 10D||Y||none||none||-||-||none||1.1||-||-||-||Canon 10D|
|Nikon D70||Y||none||none||-||-||none||1.0||-||-||-||Nikon D70|
It is notable that the M3 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 300D does not offer wifi capability.
Both the 300D and the M3 have been discontinued, but can regularly be found used on eBay. The 300D was replaced by the Canon 350D, 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 website.
So how do things add up? Which of the two cameras – the Canon 300D or the Canon M3 – 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 300D:
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Longer lasting: Can take more shots (400 versus 250) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in August 2003).
Arguments in favor of the Canon EOS M3:
- More detail: Has more megapixels (24 vs 6.3MP), which boosts linear resolution by 95%.
- Better image quality: Scores substantially higher (17 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.8 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.1 stops ISO advantage).
- Better jpgs: Has a more modern image processing engine (DIGIC 6 vs DIGIC).
- Broader imaging potential: Can capture not only stills but also 1080/30p video.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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 (1040k vs 118k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (4.2 vs 2.5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (111x68mm vs 142x99mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 283g or 44 percent) and is thus easier to take along.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
- 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 released into a lower priced segment (24 percent cheaper at launch).
- More modern: Reflects 11 years and 5 months of technical progress since the 300D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the M3 is the clear winner of the contest (22 : 3 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. 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 300D and the Canon M3 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 300D and the M3 in practical situations. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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.
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. 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 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 300D vs Canon M3
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 300D||Canon M3|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Canon EF-M mount lenses|
|Launch Date||August 2003||February 2015|
|Launch Price||USD 899||USD 679|
|Sensor Specs||Canon 300D||Canon M3|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.7 x 15.1 mm||22.3 x 14.9 mm|
|Sensor Area||342.77 mm2||332.27 mm2|
|Sensor Diagonal||27.3 mm||26.8 mm|
|Sensor Resolution||6.3 Megapixels||24 Megapixels|
|Image Resolution||3072 x 2048 pixels||6000 x 4000 pixels|
|Pixel Pitch||7.38 μm||3.72 μm|
|Pixel Density||1.84 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/30p Video|
|ISO Setting||100-1600 ISO||100-12800 ISO|
|ISO Boost||no Enhancement||100-25600 ISO|
|Image Processor||DIGIC||DIGIC 6|
|DXO Sensor Quality (score)||55||72|
|DXO Color Depth (bits)||21.0||22.8|
|DXO Dynamic Range (EV)||10.8||11.8|
|DXO Low Light (ISO)||544||1169|
|Screen Specs||Canon 300D||Canon M3|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||95%|
|LCD Framing||Live View|
|Rear LCD Size||1.8 inch||3.0 inch|
|LCD Resolution||118k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 300D||Canon M3|
|Autofocus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||No Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/4000/s|
|Continuous Shooting||2.5 shutter flaps/s||4.2 shutter flaps/s|
|Shutter Life Expectancy||50 000 actuations||100 000 actuations|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 300D||Canon M3|
|USB Connector||USB 1.1||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon 300D||Canon M3|
|Battery Life (CIPA)||400 shots per charge||250 shots per charge|
142 x 99 x 72 mm
(5.6 x 3.9 x 2.8 in)
111 x 68 x 44 mm
(4.4 x 2.7 x 1.7 in)
|Camera Weight||649 g (22.9 oz)||366 g (12.9 oz)|
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