Canon XSi vs Sony A68
The Canon EOS Rebel XSi (called Canon 450D in some regions) and the Sony Alpha SLT-A68 are two digital cameras that were announced, respectively, in January 2008 and November 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 12.2 megapixels, whereas the Sony provides 24 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 XSi and the Sony Alpha SLT-A68? 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 XSi and the Sony A68 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 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 Sony A68 is notably larger (18 percent) than the Canon XSi. Moreover, the A68 is markedly heavier (16 percent) than the XSi. In this context, it is worth noting that neither the XSi nor the A68 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
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 XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799||ebay.com|
|2.||Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699||ebay.com|
|3.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749||ebay.com|
|4.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||ebay.com|
|5.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|6.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449||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 XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449||ebay.com|
|10.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299||ebay.com|
|11.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799||ebay.com|
|12.||Canon XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899||ebay.com|
|13.||Pentax K-S1||121 mm||93 mm||70 mm||558 g||410||n||Aug 2014||749||ebay.com|
|14.||Sony A77 II||143 mm||104 mm||81 mm||647 g||480||Y||May 2014||1,199||ebay.com|
|15.||Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599||ebay.com|
|16.||Sony A58||129 mm||95 mm||78 mm||492 g||690||n||Feb 2013||599||ebay.com|
|17.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399||ebay.com|
|Note: 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 A68 was launched at a somewhat lower price (by 13 percent) than the XSi, which makes it more attractive for photographers on a tight budget. 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. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A68 is 12 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (XSi) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24MP, the A68 offers a higher resolution than the XSi (12.2MP), but the A68 has smaller individual pixels (pixel pitch of 3.91μm versus 5.19μm for the XSi). Yet, the A68 is a much more recent model (by 7 years and 9 months) than the XSi, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Sony A68 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A68 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon XSi are 21.4 x 14.2 inches or 54.3 x 36.2 cm for good quality, 17.1 x 11.4 inches or 43.4 x 28.9 cm for very good quality, and 14.2 x 9.5 inches or 36.2 x 24.1 cm for excellent quality prints.
The Canon EOS Rebel XSi has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sony Alpha SLT-A68 are ISO 100 to ISO 25600 (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 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 consideration, the A68 offers substantially better image quality than the XSi (overall score 18 points higher). The advantage is based on 2.2 bits higher color depth, 2.7 EV in additional dynamic range, and -0 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.
|14.||Sony A77 II||APS-C||24.0||6000||4000||1080/60p||23.5||12.7||1442||77|
|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 can also record movies. The A68 indeed provides for movie recording, while the XSi does not. The highest resolution format that the A68 can use is 1080/60i.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A68 has an electronic viewfinder (1440k dots), while the XSi 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 viewfinder in the A68 offers a wider field of view (100%) than the one in the XSi (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A68 has a higher magnification (0.57x vs 0.54x), 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 XSi and Sony A68 along with similar information for a selection of comparators.
|1.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|2.||Sony A68||1440||Y||2.7 / 460||tilting||n||1/4000s||8.0/s||Y||Y|
|3.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|4.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|6.||Canon T3||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/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 XS||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|10.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5/s||Y||n|
|11.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|12.||Canon XT||optical||n||1.8 / 115||fixed||n||1/4000s||3.0/s||Y||n|
|13.||Pentax K-S1||optical||n||3.0 / 921||fixed||n||1/6000s||5.4/s||Y||Y|
|14.||Sony A77 II||2359||Y||3.0 / 1229||full-flex||n||1/8000s||12.0/s||Y||Y|
|15.||Sony A6000||1440||n||3.0 / 922||tilting||n||1/4000s||11.0/s||Y||n|
|16.||Sony A58||1440||n||2.7 / 460||tilting||n||1/4000s||5.0/s||Y||Y|
|17.||Sony A77||2359||Y||3.0 / 921||full-flex||n||1/8000s||12.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the A68 and the XSi is in-body image stabilization (IBIS). The A68 reduces the risk of handshake-induced blur with all attached lenses, while the XSi offers no blur reduction with lenses that themselves do not provide optical image stabilization.
The XSi writes its imaging data to SDHC cards, while the A68 uses SDXC or Memory Stick PRO Duo cards. The A68 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the XSi 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 XSi and Sony Alpha SLT-A68 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|2.||Sony A68||Y||stereo / mono||Y||-||micro||2.0||-||-||-|
|3.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|4.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|5.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|6.||Canon T3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|7.||Canon T2i||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|8.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|9.||Canon XS||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Canon XT||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Pentax K-S1||Y||stereo / mono||-||-||micro||2.0||-||-||-|
|14.||Sony A77 II||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|15.||Sony A6000||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony A58||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|17.||Sony A77||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
Both the XSi and the A68 have been discontinued, but can regularly be found used on ebay. The XSi was replaced by the Canon T1i, while the A68 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 Sony websites.
So how do things add up? Is there a clear favorite between the Canon XSi and the Sony A68? Which camera is better? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Canon EOS Rebel XSi:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
- More compact: Is smaller (129x98mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 86g or 14 percent) and hence easier to carry around.
- More heavily discounted: Has been available for much longer (launched in January 2008).
Advantages of the Sony Alpha SLT-A68:
- More detail: Has more megapixels (24 vs 12.2MP), which boosts linear resolution by 40%.
- Better image quality: Scores substantially higher (18 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.2 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.7 EV of extra DR).
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- More framing info: Has an electronic viewfinder that displays shooting data.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.57x vs 0.54x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- More detailed LCD: Has a higher resolution rear screen (460k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster burst: Shoots at higher frequency (8 vs 3.5 flaps/sec) to capture the decisive moment.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More affordable: Was released into a lower priced segment (13 percent cheaper at launch).
- More modern: Reflects 7 years and 9 months of technical progress since the XSi launch.
If the count of relative strengths (bullet points above) is taken as a measure, the A68 is the clear winner of the contest (16 : 5 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 XSi and the Sony A68 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 XSi or the A68 perform in practice. 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], 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 XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799||ebay.com|
|2.||Sony A68||3/5||..||..||..||4/5||4/5||Nov 2015||699||ebay.com|
|3.||Canon T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749||ebay.com|
|4.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649||ebay.com|
|5.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|6.||Canon T3||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449||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 XS||..||82/100||..||+ +||3.5/5||4.5/5||Jun 2008||449||ebay.com|
|10.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299||ebay.com|
|11.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799||ebay.com|
|12.||Canon XT||..||80/100||..||+ +||o||..||Feb 2005||899||ebay.com|
|13.||Pentax K-S1||4/5||..||..||..||4.5/5||4/5||Aug 2014||749||ebay.com|
|14.||Sony A77 II||4/5||..||..||80/100||4.5/5||5/5||May 2014||1,199||ebay.com|
|15.||Sony A6000||5/5||+||4.5/5||80/100||4.5/5||5/5||Feb 2014||599||ebay.com|
|16.||Sony A58||3/5||..||..||..||4.5/5||4.5/5||Feb 2013||599||ebay.com|
|17.||Sony A77||5/5||91/100||..||81/100||..||5/5||Aug 2011||1,399||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted 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 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 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 1D X Mark II vs Sony A68
- Canon G9 X Mark II vs Canon XSi
- Canon XSi vs Leica SL
- Canon XSi vs Nikon D50
- Canon XSi vs Panasonic GX1
- Canon XSi vs Panasonic TS7
- Canon XSi vs Samsung NX30
- Leica X-U Typ 113 vs Sony A68
- Olympus E-600 vs Sony A68
- Panasonic GX9 vs Sony A68
- Ricoh GR III vs Sony A68
- Sony A68 vs Sony RX100 V
Specifications: Canon XSi vs Sony A68
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 XSi||Sony A68|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Sony A mount lenses|
|Launch Date||January 2008||November 2015|
|Launch Price||USD 799||USD 699|
|Sensor Specs||Canon XSi||Sony A68|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.2 x 14.8 mm||23.5 x 15.6 mm|
|Sensor Area||328.56 mm2||366.6 mm2|
|Sensor Diagonal||26.7 mm||28.2 mm|
|Sensor Resolution||12.2 Megapixels||24 Megapixels|
|Image Resolution||4272 x 2848 pixels||6000 x 4000 pixels|
|Pixel Pitch||5.19 μm||3.91 μm|
|Pixel Density||3.70 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||100 - 1,600 ISO||100 - 25,600 ISO|
|Image Processor||DIGIC 3||BIONZ X|
|DXO Sensor Quality (score)||61||79|
|DXO Color Depth (bits)||21.9||24.1|
|DXO Dynamic Range (EV)||10.8||13.5|
|DXO Low Light (ISO)||692||701|
|Screen Specs||Canon XSi||Sony A68|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1440k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||2.7inch|
|LCD Resolution||230k dots||460k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Canon XSi||Sony A68|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||3.5 shutter flaps/s||8 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||100 000 actuations|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDHC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon XSi||Sony A68|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon XSi||Sony A68|
|Battery Life (CIPA)||500 shots per charge||540 shots per charge|
129 x 98 x 62 mm
(5.1 x 3.9 x 2.4 in)
143 x 104 x 81 mm
(5.6 x 4.1 x 3.2 in)
|Camera Weight||524 g (18.5 oz)||610 g (21.5 oz)|
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