Canon G9 X Mark II vs XSi
The Canon PowerShot G9 X Mark II and the Canon EOS Rebel XSi (labelled Canon 450D in some countries) are two digital cameras that were announced, respectively, in January 2017 and January 2008. The G9X Mark II is a fixed lens compact, while the XSi is a DSLR. The cameras are based on an one-inch (G9X Mark II) and an APS-C (XSi) sensor. The G9X Mark II has a resolution of 20 megapixels, whereas the XSi provides 12.2 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 G9 X Mark II and the Canon EOS Rebel XSi? 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 G9 X Mark II and the Canon XSi 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 measures are rounded to the nearest millimeter.
The G9X Mark II can be obtained in two different colors (black, silver), while the XSi 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 XSi is considerably larger (122 percent) than the Canon G9 X Mark II. In this context, it is worth noting that neither the G9X Mark II nor the XSi are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G9X Mark II has a lens built in, whereas the XSi 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 XSi and their specifications in the Canon EF Lens Catalog.
Concerning battery life, the G9X Mark II gets 235 shots out of its NB-13L battery, while the XSi can take 500 images on a single charge of its LP-E5 power pack. The power pack in the G9X Mark II can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529|
|2.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|3.||Canon 2000D||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449|
|4.||Canon SX70||127 mm||91 mm||117 mm||608 g||325||n||Sep 2018||549|
|5.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|6.||Canon 200D||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|7.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499|
|8.||Canon SX620||97 mm||57 mm||28 mm||182 g||295||n||May 2016||279|
|9.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529|
|10.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449|
|11.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|12.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|13.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|14.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|15.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|16.||Sony HX99||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||449|
|17.||Sony HX95||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||429|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. 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 G9X Mark II was launched at a lower price than the XSi, 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.
The size of the imaging sensor is a crucial determinant 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. 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 G9 X Mark II features an one-inch sensor and the Canon XSi an APS-C sensor. The sensor area in the XSi is 184 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
In terms of chip-set technology, the G9X Mark II uses a more advanced image processing engine (DIGIC 7) than the XSi (DIGIC 3), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the Canon G9 X Mark II offers a higher resolution of 20 megapixels, compared with 12.2 MP of the Canon XSi. 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 2.41μm versus 5.19μm for the XSi). However, it should be noted that the G9X Mark II is much more recent (by 8 years and 11 months) than the XSi, 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 Canon G9 X Mark II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G9X Mark II for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 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 PowerShot G9 X Mark II has a native sensitivity range from ISO 125 to ISO 12800. The corresponding ISO settings for the Canon EOS Rebel XSi 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"). Of the two cameras under review, the G9X Mark II has a notably higher overall DXO score than the XSi (overall score 4 points higher), which gives it an advantage in terms of imaging quality. 1.7 EV in additional dynamic range, and 0.4 stops of reduced 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.
|1.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|9.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|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 G9X Mark II indeed provides movie recording capabilities, while the XSi does not. The highest resolution format that the G9X Mark II can use is 1080/60p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the XSi has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G9X Mark II relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon G9 X Mark II and Canon XSi in connection with corresponding information for a sample of similar cameras.
|1.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2||Y||Y|
|2.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5||Y||n|
|3.||Canon 2000D||optical||n||3.0 / 920||fixed||n||1/4000s||3.0||Y||n|
|4.||Canon SX70||2360||n||3.0 / 922||swivel||n||1/2000s||10.0||Y||Y|
|5.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|6.||Canon 200D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|7.||Canon M100||none||n||3.0 / 1040||tilting||Y||1/4000s||6.1||Y||n|
|8.||Canon SX620||none||n||3.0 / 922||fixed||n||1/2000s||2.5||Y||Y|
|9.||Canon G9 X||none||n||3.0 / 1040||fixed||Y||1/2000s||6.0||Y||Y|
|10.||Canon S120||none||n||3.0 / 922||fixed||Y||1/2000s||12.1||Y||Y|
|11.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|12.||Canon T3||optical||n||2.7 / 230||fixed||n||1/4000s||3.0||Y||n|
|13.||Canon T1i||optical||n||3.0 / 920||fixed||n||1/4000s||3.4||Y||n|
|14.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5||Y||n|
|15.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|16.||Sony HX99||638||n||3.0 / 922||tilting||Y||1/2000s||10.0||Y||Y|
|17.||Sony HX95||638||n||3.0 / 922||tilting||n||1/2000s||10.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G9X Mark II has a touchscreen, while the XSi has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
The Canon G9 X Mark II has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The G9X Mark II writes its imaging data to SDXC cards, while the XSi uses SDHC cards. The G9X Mark II 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 PowerShot G9 X Mark II and Canon EOS Rebel XSi and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon G9 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|2.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|3.||Canon 2000D||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|4.||Canon SX70||-||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|5.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|6.||Canon 200D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|7.||Canon M100||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|8.||Canon SX620||-||mono / mono||-||-||micro||2.0||Y||Y||-|
|9.||Canon G9 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|10.||Canon S120||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|11.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|12.||Canon T3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|13.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|14.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|15.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|16.||Sony HX99||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|17.||Sony HX95||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
It is notable that the G9X Mark II offers wifi support, while the XSi does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The G9X Mark II is a recent model that features in the current product line-up of Canon. In contrast, the XSi has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the XSi was succeeded by the Canon T1i. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what is the bottom line? Is there a clear favorite between the Canon G9 X Mark II and the Canon XSi? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon PowerShot G9 X Mark II:
- More detail: Offers more megapixels (20 vs 12.2MP) with a 28% higher linear resolution.
- Better image quality: Scores markedly higher (4 points) in the DXO overall assessment.
- More dynamic range: Captures a larger spectrum of light and dark details (1.7 EV of extra DR).
- Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 3).
- Broader imaging potential: Can record not only still images but also 1080/60p movies.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster burst: Shoots at higher frequency (8.2 vs 3.5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with a built-in lens, while the XSi requires a separate lens.
- More compact: Is smaller (98x58mm vs 129x98mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the XSi).
- Easier travel charging: Can be conveniently charged via its USB port.
- 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 device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 8 years and 11 months of technical progress since the XSi launch.
Reasons to prefer the Canon EOS Rebel XSi:
- Better low-light sensitivity: Can shoot in dim conditions (0.4 stops ISO advantage).
- Easier framing: Has an optical viewfinder for image composition and settings control.
- 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 235) out of a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been around for much longer (launched in January 2008).
If the count of relative strengths (bullet points above) is taken as a measure, the G9X Mark II is the clear winner of the match-up (20 : 7 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 G9 X Mark II and the Canon XSi place the cameras among the top in their class? Find out in the latest Best Travel-Zoom 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 G9X Mark II or the XSi 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 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 G9 X Mark II||4/5||..||4/5||75/100||4.5/5||4.5/5||Jan 2017||529|
|2.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|3.||Canon 2000D||..||o||..||..||3.5/5||3.5/5||Feb 2018||449|
|4.||Canon SX70||..||+ +||3.5/5||..||3.5/5||3.5/5||Sep 2018||549|
|5.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899|
|6.||Canon 200D||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549|
|7.||Canon M100||3/5||+||..||..||4/5||3.5/5||Aug 2017||499|
|8.||Canon SX620||..||..||..||..||..||4/5||May 2016||279|
|9.||Canon G9 X||3.5/5||+ +||..||..||4.5/5||4.5/5||Oct 2015||529|
|10.||Canon S120||..||+ +||..||..||4.5/5||4.5/5||Aug 2013||449|
|11.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849|
|12.||Canon T3||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449|
|13.||Canon T1i||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799|
|14.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|15.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|16.||Sony HX99||..||..||..||..||4/5||4.5/5||Aug 2018||449|
|17.||Sony HX95||..||..||..||..||..||..||Aug 2018||429|
|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. 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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 4000D vs Canon G9 X Mark II
- Canon 6D Mark II vs Canon XSi
- Canon G9 X Mark II vs Leica V-LUX 4
- Canon G9 X Mark II vs Panasonic LX100
- Canon G9 X Mark II vs Sony NEX-5T
- Canon G9 X Mark II vs Sony NEX-7
- Canon G9 X Mark II vs Sony RX100 III
- Canon XSi vs Fujifilm X-A5
- Canon XSi vs Leica X2
- Canon XSi vs Nikon 1 V2
- Canon XSi vs Nikon D5500
- Canon XSi vs Sony NEX-3
Specifications: Canon G9 X Mark II vs Canon XSi
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 G9 X Mark II||Canon XSi|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||28-84mm f/2.0-4.9||Canon EF mount lenses|
|Launch Date||January 2017||January 2008|
|Launch Price||USD 529||USD 799|
|Sensor Specs||Canon G9 X Mark II||Canon XSi|
|Sensor Format||1" Sensor||APS-C Sensor|
|Sensor Size||13.2 x 8.8 mm||22.2 x 14.8 mm|
|Sensor Area||116.16 mm2||328.56 mm2|
|Sensor Diagonal||15.9 mm||26.7 mm|
|Sensor Resolution||20 Megapixels||12.2 Megapixels|
|Image Resolution||5472 x 3648 pixels||4272 x 2848 pixels|
|Pixel Pitch||2.41 μm||5.19 μm|
|Pixel Density||17.18 MP/cm2||3.70 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||no Video|
|ISO Setting||125 - 12,800 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC 7||DIGIC 3|
|DXO Sensor Quality (score)||65||61|
|DXO Color Depth (bits)||21.9||21.9|
|DXO Dynamic Range (EV)||12.5||10.8|
|DXO Low Light (ISO)||522||692|
|Screen Specs||Canon G9 X Mark II||Canon XSi|
|Viewfinder Type||no viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G9 X Mark II||Canon XSi|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||8.2 shutter flaps/s||3.5 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDHC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||no|
|Connectivity Specs||Canon G9 X Mark II||Canon XSi|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||mini HDMI|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Canon G9 X Mark II||Canon XSi|
|Battery Life (CIPA)||235 shots per charge||500 shots per charge|
|In-Camera Charging||USB charging||no USB charging|
98 x 58 x 31 mm
(3.9 x 2.3 x 1.2 in)
129 x 98 x 62 mm
(5.1 x 3.9 x 2.4 in)
|Camera Weight||206 g (7.3 oz)||524 g (18.5 oz)|
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