Canon SX70 vs Sony A900
The Canon PowerShot SX70 HS and the Sony Alpha A900 are two digital cameras that were revealed to the public, respectively, in September 2018 and September 2008. The SX70 is a fixed lens compact, while the A900 is a DSLR. The cameras are based on a 1/2.3-inch (SX70) and a full frame (A900) sensor. The Canon has a resolution of 20.2 megapixels, whereas the Sony provides 24.4 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 Sony Alpha A900? 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 SX70 and the Sony A900. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 Sony A900 is considerably larger (58 percent) than the Canon SX70. It is noteworthy in this context that the A900 is splash and dust-proof, while the SX70 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX70 has a lens built in, whereas the A900 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
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 SX70||127 mm||91 mm||117 mm||608 g||325||n||Sep 2018||549|
|2.||Sony A900||156 mm||117 mm||82 mm||895 g||880||Y||Sep 2008||2,999|
|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.||Panasonic FZ80||130 mm||94 mm||119 mm||616 g||330||n||Jan 2017||399|
|12.||Sony A9||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499|
|13.||Sony A99 II||143 mm||104 mm||76 mm||849 g||490||Y||Sep 2016||3,199|
|14.||Sony A7S II||127 mm||96 mm||60 mm||627 g||370||Y||Sep 2015||2,999|
|15.||Sony HX400V||130 mm||93 mm||103 mm||660 g||300||n||Feb 2014||499|
|16.||Sony A99||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799|
|17.||Sony A850||156 mm||117 mm||82 mm||895 g||880||Y||Aug 2009||1,999|
|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 SX70 was launched at a lower price than the A900, despite having a lens built in. 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. 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 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 are more costly to manufacture and tend to 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 Sony A900 a full frame sensor. The sensor area in the A900 is 2979 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.0. The sensor in the SX70 has a native 4:3 aspect ratio, while the one in the A900 offers a 3:2 aspect.
With 24.4MP, the A900 offers a higher resolution than the SX70 (20.2MP), but the A900 nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 1.18μm for the SX70) due to its larger sensor. However, the SX70 is a much more recent model (by 10 years) than the A900, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. 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 Sony A900 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A900 for good quality output (200 dots per inch) amounts to 30.2 x 20.2 inches or 76.8 x 51.2 cm, for very good quality (250 dpi) 24.2 x 16.1 inches or 61.4 x 41 cm, and for excellent quality (300 dpi) 20.2 x 13.4 inches or 51.2 x 34.1 cm. The corresponding values for the Canon SX70 are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 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 Sony Alpha A900 are ISO 200 to ISO 3200, with the possibility to increase the ISO range to 100-6400.
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. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|2.||Sony A900||Full Frame||24.4||6048||4032||none||23.7||12.3||1431||79|
|6.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|12.||Sony A9||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|13.||Sony A99 II||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|14.||Sony A7S II||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|16.||Sony A99||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
|17.||Sony A850||Full Frame||24.4||6048||4032||none||23.8||12.2||1415||79|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The SX70 indeed provides movie recording capabilities, while the A900 does not. The highest resolution format that the SX70 can use is 4K/30p.
Apart from 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 A900 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 adjacent table lists some of the other core features of the Canon SX70 and Sony A900 along with similar information for a selection of comparators.
|1.||Canon SX70||2360||n||3.0 / 922||swivel||n||1/2000s||10.0||Y||Y|
|2.||Sony A900||optical||Y||3.0 / 922||fixed||n||1/8000s||5.0||n||Y|
|3.||Canon SX740||none||n||3.0 / 922||tilting||n||1/3200s||10.0||Y||Y|
|4.||Canon SX430||none||n||3.0 / 230||fixed||n||1/4000s||0.5||Y||Y|
|5.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|6.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2||Y||Y|
|7.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9||Y||Y|
|8.||Canon SX60||922||n||3.0 / 922||swivel||n||1/2000s||6.4||Y||Y|
|9.||Canon SX1||202||n||2.8 / 230||swivel||n||1/3200s||4.0||Y||Y|
|10.||Nikon B700||921||n||3.0 / 921||swivel||n||1/4000s||5.0||Y||Y|
|11.||Panasonic FZ80||1166||n||3.0 / 1040||fixed||Y||1/2000s||10.0||Y||Y|
|12.||Sony A9||3686||n||3.0 / 1440||tilting||Y||1/8000s||20.0||n||Y|
|13.||Sony A99 II||2400||Y||3.0 / 1229||full-flex||n||1/8000s||12.0||n||Y|
|14.||Sony A7S II||2400||n||3.0 / 1229||tilting||n||1/8000s||5.0||n||Y|
|15.||Sony HX400V||210||n||3.0 / 921||tilting||n||1/4000s||10.0||Y||Y|
|16.||Sony A99||2359||Y||3.0 / 1229||full-flex||n||1/8000s||6.0||n||Y|
|17.||Sony A850||optical||Y||3.0 / 922||fixed||n||1/8000s||3.0||n||Y|
One difference between the cameras concerns the presence of an on-board flash. The SX70 has one, while the A900 does not. While the built-in flash of the SX70 is not very powerful, it can at times be useful as a fill-in light.The SX70 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 A900 does not have a selfie-screen.
The SX70 writes its imaging data to SDXC cards, while the A900 uses Compact Flash or Memory Stick PRO Duo cards. The A900 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 Sony Alpha A900 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.||Sony A900||Y||- / -||-||-||mini||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.||Panasonic FZ80||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|12.||Sony A9||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||Y|
|13.||Sony A99 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||Y|
|14.||Sony A7S II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony HX400V||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony A99||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
|17.||Sony A850||Y||- / -||-||-||mini||2.0||-||-||-|
It is notable that the SX70 offers wifi support, while the A900 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Sony A900 (unlike the SX70) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The SX70 is a recent model that features in the current product line-up of Canon. In contrast, the A900 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the A900 was succeeded by the Sony A99. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.
So what conclusions can be drawn? Is there a clear favorite between the Canon SX70 and the Sony A900? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon PowerShot SX70 HS:
- 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.
- 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 5 flaps/sec) to capture the decisive moment.
- Ready to shoot: Comes with a built-in lens, while the A900 requires a separate lens.
- More compact: Is smaller (127x91mm vs 156x117mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the A900).
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- 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 of technical progress since the A900 launch.
Arguments in favor of the Sony Alpha A900:
- More detail: Has more megapixels (24.4 vs 20.2MP), which boosts linear resolution by 12%.
- 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.
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s 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 (880 versus 325) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- 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 September 2008).
If the count of individual advantages (bullet points above) is taken as a guide, the A900 emerges as the winner of the match-up (16 : 14 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 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 SX70 and the Sony A900 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the SX70 or the A900 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 where reviews by experts come in. 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.||Sony A900||..||+ +||..||+ +||4.5/5||5/5||Sep 2008||2,999|
|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.||Panasonic FZ80||..||+ +||..||..||4.5/5||4.5/5||Jan 2017||399|
|12.||Sony A9||5/5||+ +||4.8/5||89/100||5/5||5/5||Apr 2017||4,499|
|13.||Sony A99 II||..||..||4.5/5||85/100||4.5/5||4.5/5||Sep 2016||3,199|
|14.||Sony A7S II||5/5||+||..||..||4.5/5||5/5||Sep 2015||2,999|
|15.||Sony HX400V||4/5||+ +||..||..||4/5||4/5||Feb 2014||499|
|16.||Sony A99||5/5||..||..||84/100||4.5/5||4.5/5||Sep 2012||2,799|
|17.||Sony A850||3/5||..||..||75/100||..||4.5/5||Aug 2009||1,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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
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Specifications: Canon SX70 vs Sony A900
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||Sony A900|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||21-1365mm f/3.4-6.5||Sony A mount lenses|
|Launch Date||September 2018||September 2008|
|Launch Price||USD 549||USD 2,999|
|Sensor Specs||Canon SX70||Sony A900|
|Sensor Format||1/2.3" Sensor||Full Frame Sensor|
|Sensor Size||6.17 x 4.55 mm||35.9 x 24.0 mm|
|Sensor Area||28.0735 mm2||861.6 mm2|
|Sensor Diagonal||7.7 mm||43.2 mm|
|Sensor Resolution||20.2 Megapixels||24.4 Megapixels|
|Image Resolution||5184 x 3888 pixels||6048 x 4032 pixels|
|Pixel Pitch||1.18 μm||5.94 μm|
|Pixel Density||71.80 MP/cm2||2.83 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||no Video|
|ISO Setting||100 - 3,200 ISO||200 - 3,200 ISO|
|ISO Boost||no Enhancement||100 - 6,400 ISO|
|Image Processor||DIGIC 8||BIONZ|
|DXO Sensor Quality (score)||..||79|
|DXO Color Depth (bits)||..||23.7|
|DXO Dynamic Range (EV)||..||12.3|
|DXO Low Light (ISO)||..||1431|
|Screen Specs||Canon SX70||Sony A900|
|Viewfinder Type||Electronic viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||922k dots||922k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Shooting Specs||Canon SX70||Sony A900|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||10 shutter flaps/s||5 shutter flaps/s|
|Image Stabilization||Lens-based stabilization||In-body stabilization|
|Fill Flash||Built-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||CF or MS cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon SX70||Sony A900|
|External Flash||no Hotshoe||Hotshoe|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||mini 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||Sony A900|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||325 shots per charge||880 shots per charge|
127 x 91 x 117 mm
(5.0 x 3.6 x 4.6 in)
156 x 117 x 82 mm
(6.1 x 4.6 x 3.2 in)
|Camera Weight||608 g (21.4 oz)||895 g (31.6 oz)|
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