Canon T4i vs Olympus E-420
The Canon EOS Rebel T4i (called Canon 650D in some regions) and the Olympus E-420 are two digital cameras that were revealed to the public, respectively, in June 2012 and March 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (T4i) and a Four Thirds (E-420) sensor. The Canon has a resolution of 17.9 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel T4i and the Olympus E-420? 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 T4i and the Olympus E-420 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-420 is notably smaller (11 percent) than the Canon T4i. Moreover, the E-420 is markedly lighter (23 percent) than the T4i. In this context, it is worth noting that neither the T4i nor the E-420 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 (T4i) and the Four Thirds Lens Catalog (E-420).
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|2.||Olympus E-420||130 mm||91 mm||53 mm||440 g||500||n||Mar 2008||599||ebay.com|
|3.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||ebay.com|
|4.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||ebay.com|
|5.||Canon T5i||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649||ebay.com|
|6.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599||ebay.com|
|7.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699||ebay.com|
|8.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799||ebay.com|
|9.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799||ebay.com|
|10.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799||ebay.com|
|11.||Canon XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899||ebay.com|
|12.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899||ebay.com|
|13.||Olympus E-450||130 mm||91 mm||53 mm||440 g||500||n||Mar 2009||499||ebay.com|
|14.||Olympus E-620||130 mm||94 mm||60 mm||521 g||500||n||Feb 2009||699||ebay.com|
|15.||Olympus E-520||136 mm||92 mm||68 mm||535 g||750||n||May 2008||699||ebay.com|
|16.||Olympus E-410||130 mm||91 mm||53 mm||435 g||500||n||Mar 2007||699||ebay.com|
|17.||Olympus E-400||130 mm||91 mm||53 mm||435 g||500||n||Sep 2006||699||ebay.com|
|Note: 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 E-420 was launched at a markedly lower price (by 29 percent) than the T4i, which puts it into a different market segment. 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 size of the imaging sensor is a crucial determinant 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. 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 T4i features an APS-C sensor and the Olympus E-420 a Four Thirds sensor. The sensor area in the E-420 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 T4i has a native 3:2 aspect ratio, while the one in the E-420 offers a 4:3 aspect.
With 17.9MP, the T4i offers a higher resolution than the E-420 (10MP), but the T4i has smaller individual pixels (pixel pitch of 4.31μm versus 4.74μm for the E-420). However, the T4i is a much more recent model (by 4 years and 3 months) than the E-420, 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 T4i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T4i for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 cm. The corresponding values for the Olympus E-420 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.
The T4i has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS Rebel T4i 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-420 are ISO 100 to ISO 1600 (no boost).
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 review, the T4i has a notably higher overall DXO score than the E-420 (overall score 6 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.2 bits higher color depth, 0.8 EV in additional dynamic range, and 0.5 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|2.||Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56|
|13.||Olympus E-450||Four Thirds||10.0||3648||2736||none||21.5||10.5||512||56|
|14.||Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55|
|15.||Olympus E-520||Four Thirds||10.0||3648||2736||none||21.4||10.4||548||55|
|16.||Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51|
|17.||Olympus E-400||Four Thirds||10.0||3648||2736||none||21.0||10.6||127||53|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. The T4i indeed provides movie recording capabilities, while the E-420 does not. The highest resolution format that the T4i can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a range of features. The T4i and the E-420 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinders of both cameras offer the same field of view (95%), but the viewfinder of the T4i has a higher magnification than the one of the E-420 (0.53x vs 0.46x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon T4i and Olympus E-420 in connection with corresponding information for a sample of similar cameras.
|1.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|2.||Olympus E-420||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||n|
|3.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|4.||Canon T5||optical||n||3.0 / 460||fixed||n||1/4000s||3.0/s||Y||n|
|5.||Canon T5i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|6.||Canon T3i||optical||n||3.0 / 1040||swivel||n||1/4000s||3.7/s||Y||n|
|7.||Canon T2i||optical||n||3.0 / 1040||fixed||n||1/4000s||3.7/s||Y||n|
|8.||Canon T1i||optical||n||3.0 / 920||fixed||n||1/4000s||3.4/s||Y||n|
|9.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|10.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Canon XT||optical||n||1.8 / 115||fixed||n||1/4000s||3.0/s||Y||n|
|12.||Canon Rebel||optical||n||1.8 / 118||fixed||n||1/4000s||2.5/s||Y||n|
|13.||Olympus E-450||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||n|
|14.||Olympus E-620||optical||n||2.7 / 230||swivel||n||1/4000s||4.0/s||Y||Y|
|15.||Olympus E-520||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||Y|
|16.||Olympus E-410||optical||n||2.5 / 215||fixed||n||1/4000s||3.0/s||Y||n|
|17.||Olympus E-400||optical||n||2.5 / 215||fixed||n||1/4000s||3.0/s||Y||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The T4i has a touchscreen, while the E-420 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The T4i 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-420 does not have a selfie-screen.
The T4i writes its imaging data to SDXC cards, while the E-420 uses Compact Flash or xD Picture cards. The E-420 features dual card slots, which can be very useful in case a memory card fails. In contrast, the T4i 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 Rebel T4i and Olympus E-420 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|2.||Olympus E-420||Y||- / -||-||-||-||2.0||-||-||-|
|3.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|4.||Canon T5||Y||mono / mono||-||-||mini||2.0||-||-||-|
|5.||Canon T5i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|6.||Canon T3i||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|7.||Canon T2i||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|8.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|9.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|10.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Canon XT||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Canon Rebel||Y||- / -||-||-||-||1.1||-||-||-|
|13.||Olympus E-450||Y||- / -||-||-||-||2.0||-||-||-|
|14.||Olympus E-620||Y||- / -||-||-||-||2.0||-||-||-|
|15.||Olympus E-520||Y||- / -||-||-||-||2.0||-||-||-|
|16.||Olympus E-410||Y||- / -||-||-||-||2.0||-||-||-|
|17.||Olympus E-400||Y||- / -||-||-||-||2.0||-||-||-|
Both the T4i and the E-420 have been discontinued, but can regularly be found used on ebay. The T4i was replaced by the Canon T5i, while the E-420 does not have a direct successor. 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 T4i and the Olympus E-420? Which camera is better? The listing below highlights the relative strengths of the two models.
Advantages of the Canon EOS Rebel T4i:
- More detail: Offers more megapixels (17.9 vs 10MP) with a 37% higher linear resolution.
- Better image quality: Scores markedly higher (6 points) in the DXO overall assessment.
- More dynamic range: Captures a larger spectrum of light and dark details (0.8 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
- 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 viewfinder image: Features a viewfinder with a higher magnification (0.53x vs 0.46x).
- 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 (1040k vs 215k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or 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 (5 vs 3.5 flaps/sec) to capture the decisive moment.
- More modern: Reflects 4 years and 3 months of technical progress since the E-420 launch.
Reasons to prefer the Olympus E-420:
- More compact: Is smaller (130x91mm vs 133x100mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 135g or 23 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (500 versus 440) 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 affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in March 2008).
If the count of individual advantages (bullet points above) is taken as a guide, the T4i is the clear winner of the match-up (14 : 6 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 T4i and the Olympus E-420 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 remains incomplete and does no justice, for example, to the way the T4i or the E-420 perform in practice. 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 adjacent summary-table relays the overall verdicts of several of the most popular camera 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 T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|2.||Olympus E-420||..||85/100||..||+ +||4/5||4.5/5||Mar 2008||599||ebay.com|
|3.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649||ebay.com|
|4.||Canon T5||3/5||+||..||..||4/5||4.5/5||Feb 2014||449||ebay.com|
|5.||Canon T5i||..||..||..||76/100||4.5/5||4.5/5||Mar 2013||649||ebay.com|
|6.||Canon T3i||3/5||o||..||77/100||4.5/5||4.5/5||Feb 2011||599||ebay.com|
|7.||Canon T2i||..||+ +||..||77/100||4/5||4.5/5||Feb 2010||699||ebay.com|
|8.||Canon T1i||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799||ebay.com|
|9.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799||ebay.com|
|10.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799||ebay.com|
|11.||Canon XT||..||80/100||..||+ +||o||..||Feb 2005||899||ebay.com|
|12.||Canon Rebel||..||..||..||+ +||..||..||Aug 2003||899||ebay.com|
|13.||Olympus E-450||..||..||..||..||4/5||4/5||Mar 2009||499||ebay.com|
|14.||Olympus E-620||3/5||88/100||..||72/100||4.5/5||5/5||Feb 2009||699||ebay.com|
|15.||Olympus E-520||..||87/100||..||+ +||4.5/5||4.5/5||May 2008||699||ebay.com|
|16.||Olympus E-410||..||86/100||..||+ +||4/5||4.5/5||Mar 2007||699||ebay.com|
|17.||Olympus E-400||..||85/100||..||..||4/5||4/5||Sep 2006||699||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. 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, 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? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 10D vs Olympus E-420
- Canon 1D Mark IV vs Canon T4i
- Canon 2000D vs Olympus E-420
- Canon G1 X Mark II vs Canon T4i
- Canon T3 vs Olympus E-420
- Canon T4i vs Fujifilm X-Pro2
- Canon T4i vs Olympus E-300
- Canon T4i vs Olympus E-620
- Canon T4i vs Sony H300
- Fujifilm X-A7 vs Olympus E-420
- Leica X-U Typ 113 vs Olympus E-420
- Nikon D100 vs Olympus E-420
Specifications: Canon T4i vs Olympus E-420
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 T4i||Olympus E-420|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Four Thirds lenses|
|Launch Date||June 2012||March 2008|
|Launch Price||USD 849||USD 599|
|Sensor Specs||Canon T4i||Olympus E-420|
|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||17.9 Megapixels||10 Megapixels|
|Image Resolution||5184 x 3456 pixels||3648 x 2736 pixels|
|Pixel Pitch||4.31 μm||4.74 μm|
|Pixel Density||5.39 MP/cm2||4.44 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100 - 12,800 ISO||100 - 1,600 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 5||TruePic III|
|DXO Sensor Quality (score)||62||56|
|DXO Color Depth (bits)||21.7||21.5|
|DXO Dynamic Range (EV)||11.2||10.4|
|DXO Low Light (ISO)||722||527|
|Screen Specs||Canon T4i||Olympus E-420|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||2.7inch|
|LCD Resolution||1040k dots||215k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon T4i||Olympus E-420|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||5 shutter flaps/s||3.5 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||CF or XD cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon T4i||Olympus E-420|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon T4i||Olympus E-420|
|Battery Life (CIPA)||440 shots per charge||500 shots per charge|
133 x 100 x 79 mm
(5.2 x 3.9 x 3.1 in)
130 x 91 x 53 mm
(5.1 x 3.6 x 2.1 in)
|Camera Weight||575 g (20.3 oz)||440 g (15.5 oz)|
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