Canon SX70 vs Olympus E-420
The Canon PowerShot SX70 HS and the Olympus E-420 are two digital cameras that were announced, respectively, in September 2018 and March 2008. The SX70 is a fixed lens compact, while the E-420 is a DSLR. The cameras are based on a 1/2.3-inch (SX70) and a Four Thirds (E-420) sensor. The Canon has a resolution of 20.2 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 PowerShot SX70 HS 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 SX70 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 consecutive perspectives from the front, the top, and the back are available. All width, height and depth 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 somewhat larger (2 percent) than the Canon SX70. In this context, it is worth noting that neither the SX70 nor the E-420 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX70 has a lens built in, whereas the E-420 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the E-420 and their specifications in the Four Thirds Lens Catalog.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 SX70||127 mm||91 mm||117 mm||608 g||325||n||Sep 2018||549|
|2.||Olympus E-420||130 mm||91 mm||53 mm||440 g||500||n||Mar 2008||599|
|3.||Canon SX740||110 mm||64 mm||40 mm||299 g||265||n||Jul 2018||399|
|4.||Canon SX430||104 mm||69 mm||85 mm||323 g||195||n||Jan 2017||299|
|5.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|6.||Canon G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529|
|7.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399|
|8.||Canon SX60||128 mm||93 mm||114 mm||650 g||340||n||Sep 2014||549|
|9.||Canon SX1||128 mm||88 mm||88 mm||615 g||..||n||Sep 2008||599|
|10.||Nikon B700||125 mm||85 mm||107 mm||565 g||350||n||Feb 2016||499|
|11.||Olympus E-450||130 mm||91 mm||53 mm||440 g||500||n||Mar 2009||499|
|12.||Olympus E-620||130 mm||94 mm||60 mm||521 g||500||n||Feb 2009||699|
|13.||Olympus E-520||136 mm||92 mm||68 mm||535 g||750||n||May 2008||699|
|14.||Olympus E-410||130 mm||91 mm||53 mm||435 g||500||n||Mar 2007||699|
|15.||Olympus E-400||130 mm||91 mm||53 mm||435 g||500||n||Sep 2006||699|
|16.||Panasonic FZ80||130 mm||94 mm||119 mm||616 g||330||n||Jan 2017||399|
|17.||Sony HX400V||130 mm||93 mm||103 mm||660 g||300||n||Feb 2014||499|
|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 SX70 was launched at a lower price than the E-420, despite having a lens built in. 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 sensor inside a digital camera is one of the key determinants 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. 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 SX70 features a 1/2.3-inch sensor and the Olympus E-420 a Four Thirds sensor. The sensor area in the E-420 is 704 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 2.0. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
Despite having a smaller sensor, the Canon SX70 offers a higher resolution of 20.2 megapixels, compared with 10 MP of the Olympus E-420. 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 1.18μm versus 4.74μm for the E-420). However, it should be noted that the SX70 is much more recent (by 10 years and 6 months) than the E-420, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the SX70 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon SX70 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX70 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 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 Canon PowerShot SX70 HS has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Olympus E-420 are ISO 100 to ISO 1600 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 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|
|6.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|11.||Olympus E-450||Four Thirds||10.0||3648||2736||none||21.5||10.5||512||56|
|12.||Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55|
|13.||Olympus E-520||Four Thirds||10.0||3648||2736||none||21.4||10.4||548||55|
|14.||Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51|
|15.||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 SX70 indeed provides movie recording capabilities, while the E-420 does not. The highest resolution format that the SX70 can use is 4K/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the SX70 has an electronic viewfinder (2360k dots), while the E-420 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The following table reports on some other key feature differences and similarities of the Canon SX70, the Olympus E-420, and comparable cameras.
|1.||Canon SX70||2360||n||3.0 / 922||swivel||n||1/2000s||10.0/s||Y||Y|
|2.||Olympus E-420||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||n|
|3.||Canon SX740||none||n||3.0 / 922||tilting||n||1/3200s||10.0/s||Y||Y|
|4.||Canon SX430||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|5.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|6.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2/s||Y||Y|
|7.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9/s||Y||Y|
|8.||Canon SX60||922||n||3.0 / 922||swivel||n||1/2000s||6.4/s||Y||Y|
|9.||Canon SX1||202||n||2.8 / 230||swivel||n||1/3200s||4.0/s||Y||Y|
|10.||Nikon B700||921||n||3.0 / 921||swivel||n||1/4000s||5.0/s||Y||Y|
|11.||Olympus E-450||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||n|
|12.||Olympus E-620||optical||n||2.7 / 230||swivel||n||1/4000s||4.0/s||Y||Y|
|13.||Olympus E-520||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||Y|
|14.||Olympus E-410||optical||n||2.5 / 215||fixed||n||1/4000s||3.0/s||Y||n|
|15.||Olympus E-400||optical||n||2.5 / 215||fixed||n||1/4000s||3.0/s||Y||n|
|16.||Panasonic FZ80||1166||n||3.0 / 1040||fixed||Y||1/2000s||10.0/s||Y||Y|
|17.||Sony HX400V||210||n||3.0 / 921||tilting||n||1/4000s||10.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
The SX70 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 SX70 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 PowerShot SX70 HS 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 SX70||-||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|2.||Olympus E-420||Y||- / -||-||-||-||2.0||-||-||-|
|3.||Canon SX740||-||stereo / mono||-||-||micro||2.0||Y||-||Y|
|4.||Canon SX430||-||mono / mono||-||-||-||2.0||Y||Y||-|
|5.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|6.||Canon G9 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|7.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|8.||Canon SX60||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|9.||Canon SX1||Y||stereo / mono||-||-||YES||2.0||-||-||-|
|10.||Nikon B700||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|11.||Olympus E-450||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Olympus E-620||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Olympus E-520||Y||- / -||-||-||-||2.0||-||-||-|
|14.||Olympus E-410||Y||- / -||-||-||-||2.0||-||-||-|
|15.||Olympus E-400||Y||- / -||-||-||-||2.0||-||-||-|
|16.||Panasonic FZ80||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|17.||Sony HX400V||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
It is notable that the SX70 offers wifi support, while the E-420 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The SX70 is a recent model that features in the current product line-up of Canon. In contrast, the E-420 has been discontinued (but can be found pre-owned on eBay). There has not been a direct replacement model for the E-420 from Olympus. 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 SX70 and the Olympus E-420? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon PowerShot SX70 HS:
- More detail: Offers more megapixels (20.2 vs 10MP) with a 42% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Broader imaging potential: Can record not only still images but also 4K/30p movies.
- More framing info: Has an electronic viewfinder that displays shooting data.
- 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 (922k vs 215k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (10 vs 3.5 flaps/sec) to capture the decisive moment.
- Ready to shoot: Comes with a built-in lens, while the E-420 requires a separate lens.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 10 years and 6 months of technical progress since the E-420 launch.
Arguments in favor of the Olympus E-420:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (500 versus 325) out of a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- 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 March 2008).
If the count of relative strengths (bullet points above) is taken as a measure, the SX70 emerges as the winner of the contest (15 : 12 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 SX70 and the Olympus E-420 place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best DSLR 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 incomplete and does no justice, for example, to the way the SX70 or the E-420 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major 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 SX70||..||+ +||3.5/5||..||3.5/5||3.5/5||Sep 2018||549|
|2.||Olympus E-420||..||85/100||..||+ +||4/5||4.5/5||Mar 2008||599|
|3.||Canon SX740||..||+||3.5/5||..||4/5||4/5||Jul 2018||399|
|4.||Canon SX430||..||..||..||..||3.5/5||3.5/5||Jan 2017||299|
|5.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899|
|6.||Canon G9 X Mark II||4/5||..||4/5||75/100||4.5/5||4.5/5||Jan 2017||529|
|7.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399|
|8.||Canon SX60||3/5||+ +||..||75/100||4/5||4.5/5||Sep 2014||549|
|9.||Canon SX1||..||+ +||..||+||..||3.5/5||Sep 2008||599|
|10.||Nikon B700||..||+||..||..||4/5||4/5||Feb 2016||499|
|11.||Olympus E-450||..||..||..||..||4/5||4/5||Mar 2009||499|
|12.||Olympus E-620||3/5||88/100||..||72/100||4.5/5||5/5||Feb 2009||699|
|13.||Olympus E-520||..||87/100||..||+ +||4.5/5||4.5/5||May 2008||699|
|14.||Olympus E-410||..||86/100||..||+ +||4/5||4.5/5||Mar 2007||699|
|15.||Olympus E-400||..||85/100||..||..||4/5||4/5||Sep 2006||699|
|16.||Panasonic FZ80||..||+ +||..||..||4.5/5||4.5/5||Jan 2017||399|
|17.||Sony HX400V||4/5||+ +||..||..||4/5||4/5||Feb 2014||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. 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 are interested in seeing how other cameras pair up, just make your choice using the following search menu. 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 750D vs Canon SX70
- Canon 760D vs Olympus E-420
- Canon 850D vs Canon SX70
- Canon SX70 vs Fujifilm X100S
- Canon SX70 vs Nikon D3500
- Canon SX70 vs Nikon Z6 II
- Canon SX70 vs Panasonic GF5
- Fujifilm X-Pro1 vs Olympus E-420
- Fujifilm XP140 vs Olympus E-420
- Nikon D4 vs Olympus E-420
- Olympus E-3 vs Olympus E-420
- Olympus E-420 vs Pentax K-1 II
Specifications: Canon SX70 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 SX70||Olympus E-420|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||21-1365mm f/3.4-6.5||Four Thirds lenses|
|Launch Date||September 2018||March 2008|
|Launch Price||USD 549||USD 599|
|Sensor Specs||Canon SX70||Olympus E-420|
|Sensor Format||1/2.3" Sensor||Four Thirds Sensor|
|Sensor Size||6.17 x 4.55 mm||17.3 x 13.0 mm|
|Sensor Area||28.0735 mm2||224.9 mm2|
|Sensor Diagonal||7.7 mm||21.6 mm|
|Sensor Resolution||20.2 Megapixels||10 Megapixels|
|Image Resolution||5184 x 3888 pixels||3648 x 2736 pixels|
|Pixel Pitch||1.18 μm||4.74 μm|
|Pixel Density||71.80 MP/cm2||4.44 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||no Video|
|ISO Setting||100 - 3,200 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC 8||TruePic III|
|DXO Sensor Quality (score)||..||56|
|DXO Color Depth (bits)||..||21.5|
|DXO Dynamic Range (EV)||..||10.4|
|DXO Low Light (ISO)||..||527|
|Screen Specs||Canon SX70||Olympus E-420|
|Viewfinder Type||Electronic viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|Viewfinder Resolution||2360k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||2.7inch|
|LCD Resolution||922k dots||215k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Shooting Specs||Canon SX70||Olympus E-420|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||10 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 SX70||Olympus E-420|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||Wifi built-in||no Wifi|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Canon SX70||Olympus E-420|
|Battery Life (CIPA)||325 shots per charge||500 shots per charge|
127 x 91 x 117 mm
(5.0 x 3.6 x 4.6 in)
130 x 91 x 53 mm
(5.1 x 3.6 x 2.1 in)
|Camera Weight||608 g (21.4 oz)||440 g (15.5 oz)|
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