Canon XT vs Olympus E-420
The Canon EOS Rebel XT (called Canon 350D in some regions) and the Olympus E-420 are two digital cameras that were announced, respectively, in February 2005 and March 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (XT) and a Four Thirds (E-420) sensor. The Canon has a resolution of 8 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 XT 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.
The physical size and weight of the Canon XT and the Olympus E-420 are illustrated 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 width, height and depth dimensions are rounded to the nearest millimeter.
The XT can be obtained in two different colors (black, silver), while the E-420 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 Canon XT and the Olympus E-420 are of equal size. However, the E-420 is markedly lighter (19 percent) than the XT. In this context, it is worth noting that neither the XT 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 (XT) 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 XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|2.||Olympus E-420||130 mm||91 mm||53 mm||440 g||500||n||Mar 2008||599|
|3.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|4.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|5.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|6.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|7.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|8.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|9.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|10.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|11.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|12.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|13.||Olympus E-450||130 mm||91 mm||53 mm||440 g||500||n||Mar 2009||499|
|14.||Olympus E-620||130 mm||94 mm||60 mm||521 g||500||n||Feb 2009||699|
|15.||Olympus E-520||136 mm||92 mm||68 mm||535 g||750||n||May 2008||699|
|16.||Olympus E-410||130 mm||91 mm||53 mm||435 g||500||n||Mar 2007||699|
|17.||Olympus E-400||130 mm||91 mm||53 mm||435 g||500||n||Sep 2006||699|
|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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-420 was launched at a markedly lower price (by 33 percent) than the XT, 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.
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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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 XT 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 XT has a native 3:2 aspect ratio, while the one in the E-420 offers a 4:3 aspect.
In terms of underlying technology, both cameras are build around CMOS sensors.
Despite having a smaller sensor, the E-420 offers a higher resolution of 10 megapixels, compared with 8 MP of the XT. 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 4.74μm versus 6.41μm for the XT). However, it should be noted that the E-420 is much more recent (by 3 years) than the XT, 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 Olympus E-420 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-420 for good quality output (200 dots per inch) amounts to 18.2 x 13.7 inches or 46.3 x 34.7 cm, for very good quality (250 dpi) 14.6 x 10.9 inches or 37.1 x 27.8 cm, and for excellent quality (300 dpi) 12.2 x 9.1 inches or 30.9 x 23.2 cm. The corresponding values for the Canon XT are 17.3 x 11.5 inches or 43.9 x 29.3 cm for good quality, 13.8 x 9.2 inches or 35.1 x 23.4 cm for very good quality, and 11.5 x 7.7 inches or 29.3 x 19.5 cm for excellent quality prints.
The Canon EOS Rebel XT has a native sensitivity range from ISO 100 to ISO 1600. The Olympus E-420 offers exactly the same ISO settings.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 XT has a notably higher overall DXO score than the E-420 (overall score 4 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.3 bits higher color depth, 0.4 EV in additional dynamic range, and 0.3 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.
|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.|
Beyond body and sensor, cameras can and do differ across a range of features. The XT 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 XT has a higher magnification than the one of the E-420 (0.49x vs 0.46x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon XT and Olympus E-420 along with similar information for a selection of comparators.
|1.||Canon XT||optical||n||1.8 / 115||fixed||n||1/4000s||3.0/s||Y||n|
|2.||Olympus E-420||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||n|
|3.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|4.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|6.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|7.||Canon T1i||optical||n||3.0 / 920||fixed||n||1/4000s||3.4/s||Y||n|
|8.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|9.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0/s||Y||n|
|10.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0/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.|
The XT writes its imaging data to Compact Flash 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 XT 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 XT 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 XT||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Olympus E-420||Y||- / -||-||-||-||2.0||-||-||-|
|3.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|4.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|5.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|6.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|7.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|8.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|9.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|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 XT and the E-420 have been discontinued, but can regularly be found used on eBay. The XT was replaced by the Canon Xti, 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 the Canon XT better than the Olympus E-420 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon EOS Rebel XT:
- Better image quality: Scores markedly higher (4 points) in the DXO overall assessment.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.49x vs 0.46x).
- More heavily discounted: Has been available for much longer (launched in February 2005).
Arguments in favor of the Olympus E-420:
- More detail: Has more megapixels (10 vs 8MP), which boosts linear resolution by 10%.
- Larger screen: Has a bigger rear LCD (2.7" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (215k vs 115k dots).
- Faster burst: Shoots at higher frequency (3.5 vs 3 flaps/sec) to capture the decisive moment.
- Less heavy: Has a lower weight (by 100g or 19 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (500 versus 400) 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 (33 percent cheaper at launch).
- More modern: Reflects 3 years of technical progress since the XT launch.
If the count of individual advantages (bullet points above) is taken as a guide, the E-420 is the clear winner of the contest (9 : 3 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 XT 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the XT and the E-420 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 why hands-on reviews by experts are important. 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 XT||..||80/100||..||+ +||o||..||Feb 2005||899|
|2.||Olympus E-420||..||85/100||..||+ +||4/5||4.5/5||Mar 2008||599|
|3.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899|
|4.||Canon T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|5.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649|
|6.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849|
|7.||Canon T1i||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799|
|8.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|9.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399|
|10.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|11.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499|
|12.||Canon Rebel||..||..||..||+ +||..||..||Aug 2003||899|
|13.||Olympus E-450||..||..||..||..||4/5||4/5||Mar 2009||499|
|14.||Olympus E-620||3/5||88/100||..||72/100||4.5/5||5/5||Feb 2009||699|
|15.||Olympus E-520||..||87/100||..||+ +||4.5/5||4.5/5||May 2008||699|
|16.||Olympus E-410||..||86/100||..||+ +||4/5||4.5/5||Mar 2007||699|
|17.||Olympus E-400||..||85/100||..||..||4/5||4/5||Sep 2006||699|
|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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu 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.
- Canon SX520 vs Olympus E-420
- Canon XT vs Leica M8
- Canon XT vs Nikon Coolpix A
- Canon XT vs Nikon Df
- Canon XT vs Olympus XZ-2
- Canon XT vs Sony A58
- Canon XT vs Sony RX0 II
- Nikon D7100 vs Olympus E-420
- Nikon D7200 vs Olympus E-420
- Olympus E-420 vs Sony A6100
- Olympus E-420 vs Sony NEX-5N
- Olympus E-420 vs Sony NEX-5R
Specifications: Canon XT 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 XT||Olympus E-420|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Four Thirds lenses|
|Launch Date||February 2005||March 2008|
|Launch Price||USD 899||USD 599|
|Sensor Specs||Canon XT||Olympus E-420|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||22.2 x 14.8 mm||17.3 x 13.0 mm|
|Sensor Area||328.56 mm2||224.9 mm2|
|Sensor Diagonal||26.7 mm||21.6 mm|
|Sensor Resolution||8 Megapixels||10 Megapixels|
|Image Resolution||3456 x 2304 pixels||3648 x 2736 pixels|
|Pixel Pitch||6.41 μm||4.74 μm|
|Pixel Density||2.42 MP/cm2||4.44 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||no Video|
|ISO Setting||100 - 1,600 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC II||TruePic III|
|DXO Sensor Quality (score)||60||56|
|DXO Color Depth (bits)||21.8||21.5|
|DXO Dynamic Range (EV)||10.8||10.4|
|DXO Low Light (ISO)||637||527|
|Screen Specs||Canon XT||Olympus E-420|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|LCD Framing||Live View|
|Rear LCD Size||1.8inch||2.7inch|
|LCD Resolution||115k dots||215k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon XT||Olympus E-420|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||3 shutter flaps/s||3.5 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||CF or XD cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon XT||Olympus E-420|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||no HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon XT||Olympus E-420|
|Battery Life (CIPA)||400 shots per charge||500 shots per charge|
127 x 94 x 64 mm
(5.0 x 3.7 x 2.5 in)
130 x 91 x 53 mm
(5.1 x 3.6 x 2.1 in)
|Camera Weight||540 g (19.0 oz)||440 g (15.5 oz)|
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