Canon T3 vs Olympus E-P3
The Canon EOS Rebel T3 (called Canon 1100D in some regions) and the Olympus PEN E-P3 are two digital cameras that were announced, respectively, in February 2011 and June 2011. The T3 is a DSLR, while the E-P3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (T3) and a Four Thirds (E-P3) sensor. Both cameras offer a resolution of 12.2 megapixels.
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 Rebel T3 and the Olympus PEN E-P3? 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 T3 and the Olympus E-P3. 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 measures are rounded to the nearest millimeter.
The E-P3 can be obtained in three different colors (black, silver, white), while the T3 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-P3 is considerably smaller (35 percent) than the Canon T3. Moreover, the E-P3 is markedly lighter (25 percent) than the T3. In this context, it is worth noting that neither the T3 nor the E-P3 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (T3) and the Micro Four Thirds Lens Catalog (E-P3). Mirrorless cameras, such as the E-P3, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|2.||Olympus E-P3||122 mm||69 mm||34 mm||369 g||330||n||Jun 2011||799|
|3.||Canon T100||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399|
|4.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449|
|5.||Canon G1 X||117 mm||81 mm||65 mm||534 g||250||n||Jan 2012||799|
|6.||Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429|
|7.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|8.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599|
|9.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699|
|10.||Canon XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449|
|11.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|12.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|13.||Olympus E-PL2||114 mm||72 mm||42 mm||362 g||280||n||Jan 2011||599|
|14.||Olympus E-PL3||110 mm||64 mm||37 mm||313 g||300||n||Jun 2011||599|
|15.||Olympus E-PL1||115 mm||72 mm||42 mm||334 g||290||n||Feb 2010||599|
|16.||Olympus E-P1||121 mm||70 mm||36 mm||355 g||300||n||Jun 2009||799|
|17.||Olympus E-P2||121 mm||70 mm||36 mm||355 g||300||n||Nov 2009||799|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. 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 T3 was launched at a markedly lower price (by 44 percent) than the E-P3, which puts it into a different market segment. 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 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 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon T3 features an APS-C sensor and the Olympus E-P3 a Four Thirds sensor. The sensor area in the E-P3 is 30 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 T3 has a native 3:2 aspect ratio, while the one in the E-P3 offers a 4:3 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
Even though the T3 has a larger sensor, both cameras offer the same resolution of 12.2 megapixels. This implies that the T3 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.15μm versus 4.29μm for the E-P3), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the E-P3 is a somewhat more recent model (by 4 months) than the T3, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
The Canon EOS Rebel T3 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the Olympus PEN E-P3 are ISO 200 to ISO 12800 (no boost).
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. Of the two cameras under review, the T3 provides substantially higher image quality than the E-P3, with an overall score that is 11 points higher. This advantage is based on 1.1 bits higher color depth, 0.9 EV in additional dynamic range, and 0.5 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.
| DXO |
|2.||Olympus E-P3||Four Thirds||12.2||4032||3024||1080/60i||20.8||10.1||536||51|
|5.||Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|13.||Olympus E-PL2||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55|
|14.||Olympus E-PL3||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52|
|15.||Olympus E-PL1||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54|
|16.||Olympus E-P1||Four Thirds||12.2||4032||3024||720/30p||21.4||10.4||536||55|
|17.||Olympus E-P2||Four Thirds||12.2||4032||3024||720/30p||21.5||10.4||505||56|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the E-P3 provides a better video resolution than the T3. It can shoot movie footage at 1080/60i, while the Canon is limited to 720/30p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the T3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-P3 relies on live view and the rear LCD for framing. That said, the E-P3 can be equipped with an optional viewfinder – the VF-3. The following table reports on some other key feature differences and similarities of the Canon T3, the Olympus E-P3, and comparable cameras.
|5.||Canon G1 X||optical||n||3.0||922||Swivel||n||1/4000s||1.9||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-P3 has a touchscreen, while the T3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
Concerning the storage of imaging data, both the T3 and the E-P3 write their files to SDXC cards. The E-P3 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the T3 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 Rebel T3 and Olympus PEN E-P3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|5.||Canon G1 X||Y||stereo||mono||-||-||mini||2.0||-||-||-|
Both the T3 and the E-P3 have been discontinued, but can regularly be found used on eBay. The T3 was replaced by the Canon T5, while the E-P3 was followed by the Olympus E-P5. 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 is the bottom line? Is there a clear favorite between the Canon T3 and the Olympus E-P3? Which camera is better? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Canon EOS Rebel T3:
- Better image quality: Scores substantially higher (11 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.1 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (0.9 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Longer lasting: Can take more shots (700 versus 330) on a single battery charge.
- More affordable: Was introduced into a lower priced category (44 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in February 2011).
Reasons to prefer the Olympus PEN E-P3:
- Better video: Provides higher definition movie capture (1080/60i vs 720/30p).
- Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (614k vs 230k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More compact: Is smaller (122x69mm vs 130x100mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 126g or 25 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Was introduced somewhat (4 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the E-P3 emerges as the winner of the match-up (10 : 8 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 T3 and the Olympus E-P3 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the T3 or the E-P3. 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], 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 T3||..||80/100||69/100||4/5||4.5/5||Feb 2011||449|
|2.||Olympus E-P3||..||83/100||74/100||4.5/5||4.5/5||Jun 2011||799|
|3.||Canon T100||..||o||..||3.5/5||3.5/5||Feb 2018||399|
|4.||Canon T5||3/5||+||..||4/5||4.5/5||Feb 2014||449|
|5.||Canon G1 X||5/5||+||76/100||4/5||4.5/5||Jan 2012||799|
|6.||Canon SX50||3/5||+ +||72/100||4.5/5||4.5/5||Sep 2012||429|
|7.||Canon T4i||4/5||+ +||77/100||4.5/5||4.5/5||Jun 2012||849|
|8.||Canon T3i||3/5||o||77/100||4.5/5||4.5/5||Feb 2011||599|
|9.||Canon T2i||..||+ +||77/100||4/5||4.5/5||Feb 2010||699|
|10.||Canon XS||..||82/100||+ +||3.5/5||4.5/5||Jun 2008||449|
|11.||Canon XSi||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|12.||Canon XTi||..||+ +||+ +||o||4/5||Aug 2006||799|
|13.||Olympus E-PL2||3/5||83/100||71/100||4.5/5||4.5/5||Jan 2011||599|
|14.||Olympus E-PL3||3/5||+ +||72/100||4.5/5||4/5||Jun 2011||599|
|15.||Olympus E-PL1||..||86/100||69/100||4/5||4.5/5||Feb 2010||599|
|16.||Olympus E-P1||..||+||66/100||4/5||4.5/5||Jun 2009||799|
|17.||Olympus E-P2||3/5||+||69/100||4/5||4.5/5||Nov 2009||799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Canon T3 vs Olympus E-P3
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 T3||Olympus E-P3|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Micro Four Thirds lenses|
|Launch Date||February 2011||June 2011|
|Launch Price||USD 449||USD 799|
|Sensor Specs||Canon T3||Olympus E-P3|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||22.0 x 14.7 mm||17.3 x 13.0 mm|
|Sensor Area||323.4 mm2||224.9 mm2|
|Sensor Diagonal||26.5 mm||21.6 mm|
|Sensor Resolution||12.2 Megapixels||12.2 Megapixels|
|Image Resolution||4272 x 2848 pixels||4032 x 3024 pixels|
|Pixel Pitch||5.15 μm||4.29 μm|
|Pixel Density||3.76 MP/cm2||5.42 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||720/30p Video||1080/60i Video|
|ISO Setting||100 - 6,400 ISO||200 - 12,800 ISO|
|Image Processor||DIGIC 4||TruePic VI|
|DXO Sensor Quality (score)||62||51|
|DXO Color Depth (bits)||21.9||20.8|
|DXO Dynamic Range (EV)||11.0||10.1|
|DXO Low Light (ISO)||755||536|
|Screen Specs||Canon T3||Olympus E-P3|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||95%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||2.7inch||3.0inch|
|LCD Resolution||230k dots||614k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon T3||Olympus E-P3|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||3 shutter flaps/s|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon T3||Olympus E-P3|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon T3||Olympus E-P3|
|Battery Life (CIPA)||700 shots per charge||330 shots per charge|
130 x 100 x 78 mm
(5.1 x 3.9 x 3.1 in)
122 x 69 x 34 mm
(4.8 x 2.7 x 1.3 in)
|Camera Weight||495 g (17.5 oz)||369 g (13.0 oz)|
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