Canon G1 X Mark III vs XT
The Canon PowerShot G1 X Mark III and the Canon EOS Rebel XT (labelled Canon 350D in some countries) are two digital cameras that were announced, respectively, in October 2017 and February 2005. The G1X Mark III is a fixed lens compact, while the XT is a DSLR. Both cameras are equipped with an APS-C sensor. The G1X Mark III has a resolution of 24 megapixels, whereas the XT provides 8 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 G1 X Mark III and the Canon EOS Rebel XT? 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 G1 X Mark III and the Canon XT 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 size dimensions are rounded to the nearest millimeter.
The XT can be obtained in two different colors (black, silver), while the G1X Mark III 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 is notably larger (33 percent) than the Canon G1 X Mark III. It is worth mentioning in this context that the G1X Mark III is splash and dust resistant, while the XT does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X Mark III has a lens built in, whereas the XT 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 XT and their specifications in the Canon EF Lens Catalog.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon G1 X Mark III||115 mm||78 mm||51 mm||399 g||200||Y||Oct 2017||1,299|
|2.||Canon XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|3.||Canon 6D Mark II||144 mm||111 mm||75 mm||765 g||1200||Y||Jun 2017||1,999|
|4.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|5.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199|
|6.||Canon SX540||120 mm||82 mm||92 mm||442 g||205||n||Jan 2016||399|
|7.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|8.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|9.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|10.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|11.||Fujifilm X100V||128 mm||75 mm||53 mm||478 g||420||Y||Feb 2020||1,399|
|12.||Fujifilm X-T3||133 mm||93 mm||59 mm||539 g||390||Y||Sep 2018||1,499|
|13.||Fujifilm X100F||127 mm||75 mm||52 mm||469 g||390||n||Jan 2017||1,299|
|14.||Nikon D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299|
|15.||Sony A6300||120 mm||67 mm||49 mm||404 g||400||Y||Feb 2016||999|
|16.||Sony A6500||120 mm||67 mm||53 mm||453 g||350||Y||Oct 2016||1,399|
|17.||Sony RX10 III||133 mm||94 mm||127 mm||1051 g||420||Y||Mar 2016||1,499|
|Notes: 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. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the XT is 1 percent smaller. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.5 (G1X Mark III) 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 G1X Mark III uses a more advanced image processing engine (DIGIC 7) than the XT (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.
With 24MP, the G1X Mark III offers a higher resolution than the XT (8MP), but the G1X Mark III has smaller individual pixels (pixel pitch of 3.72μm versus 6.41μm for the XT). However, the G1X Mark III is a much more recent model (by 12 years and 8 months) than the XT, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.
The resolution advantage of the Canon G1 X Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G1X Mark III 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 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 G1X Mark III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon PowerShot G1 X Mark III has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Canon EOS Rebel XT 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 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
| DXO |
|1.||Canon G1 X Mark III||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|3.||Canon 6D Mark II||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85|
|17.||Sony RX10 III||1-inch||20.0||5472||3648||4K/30p||23.1||12.6||472||70|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The G1X Mark III indeed provides movie recording capabilities, while the XT does not. The highest resolution format that the G1X Mark III can use is 1080/60p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the G1X Mark III has an electronic viewfinder (2360k dots), while the XT 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 table below summarizes some of the other core capabilities of the Canon G1 X Mark III and Canon XT in connection with corresponding information for a sample of similar cameras.
|1.||Canon G1 X Mark III||2360||n||3.0||1040||swivel||Y||1/2000s||9.0||Y||Y|
|3.||Canon 6D Mark II||optical||Y||3.0||1040||swivel||Y||1/4000s||6.5||n||n|
|17.||Sony RX10 III||2359||Y||3.0||1229||tilting||n||1/2000s||14.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G1X Mark III has a touchscreen, while the XT has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The G1X Mark III 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 XT does not have a selfie-screen.
The Canon G1 X Mark III 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 G1X Mark III writes its imaging data to SDXC cards, while the XT uses Compact Flash 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 G1 X Mark III and Canon EOS Rebel XT and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Canon G1 X Mark III||Y||stereo||mono||-||-||micro||2.0||Y||Y||Y|
|3.||Canon 6D Mark II||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y|
|17.||Sony RX10 III||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the G1X Mark III offers wifi support, while the XT does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The G1X Mark III is a recent model that features in the current product line-up of Canon. In contrast, the XT has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the XT was succeeded by the Canon Xti. 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 conclusions can be drawn? Is the Canon G1 X Mark III better than the Canon XT or vice versa? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon PowerShot G1 X Mark III:
- More detail: Offers more megapixels (24 vs 8MP) with a 74% higher linear resolution.
- Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC II).
- Broader imaging potential: Can record not only still images but also 1080/60p movies.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 115k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (9 vs 3 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 XT requires a separate lens.
- More compact: Is smaller (115x78mm vs 127x94mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the XT).
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- 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.
- More modern: Reflects 12 years and 8 months of technical progress since the XT launch.
Advantages of the Canon EOS Rebel XT:
- 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 (400 versus 200) out of a single battery charge.
- More heavily discounted: Has been around for much longer (launched in February 2005).
If the count of individual advantages (bullet points above) is taken as a guide, the G1X Mark III is the clear winner of the match-up (21 : 5 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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 G1 X Mark III and the Canon XT 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G1X Mark III or the XT. 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 following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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 G1 X Mark III||5/5||+||79/100||4.5/5||4.5/5||Oct 2017||1,299|
|2.||Canon XT||..||80/100||+ +||o||..||Feb 2005||899|
|3.||Canon 6D Mark II||4/5||+||80/100||4.5/5||4/5||Jun 2017||1,999|
|4.||Canon 77D||4.5/5||..||82/100||4.5/5||4/5||Feb 2017||899|
|5.||Canon 80D||4/5||+ +||84/100||4.5/5||4.5/5||Feb 2016||1,199|
|6.||Canon SX540||..||..||..||..||..||Jan 2016||399|
|7.||Canon T6i||5/5||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|8.||Canon T6s||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|9.||Canon XTi||..||+ +||+ +||o||4/5||Aug 2006||799|
|10.||Canon Rebel||..||..||+ +||..||..||Aug 2003||899|
|11.||Fujifilm X100V||5/5||+ +||86/100||5/5||4.5/5||Feb 2020||1,399|
|12.||Fujifilm X-T3||5/5||+ +||88/100||5/5||5/5||Sep 2018||1,499|
|13.||Fujifilm X100F||5/5||+||83/100||4.5/5||4.5/5||Jan 2017||1,299|
|14.||Nikon D7500||4.5/5||+ +||86/100||5/5||4.5/5||Apr 2017||1,299|
|15.||Sony A6300||4.5/5||+||85/100||5/5||5/5||Feb 2016||999|
|16.||Sony A6500||5/5||+ +||85/100||4.5/5||4.5/5||Oct 2016||1,399|
|17.||Sony RX10 III||5/5||+||84/100||4.5/5||4.5/5||Mar 2016||1,499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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. 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? 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.
Specifications: Canon G1 X Mark III vs Canon XT
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 G1 X Mark III||Canon XT|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||24-72mm f/2.8-5.6||Canon EF mount lenses|
|Launch Date||October 2017||February 2005|
|Launch Price||USD 1,299||USD 899|
|Sensor Specs||Canon G1 X Mark III||Canon XT|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||22.2 x 14.8 mm|
|Sensor Area||332.27 mm2||328.56 mm2|
|Sensor Diagonal||26.8 mm||26.7 mm|
|Sensor Resolution||24 Megapixels||8 Megapixels|
|Image Resolution||6000 x 4000 pixels||3456 x 2304 pixels|
|Pixel Pitch||3.72 μm||6.41 μm|
|Pixel Density||7.22 MP/cm2||2.42 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||no Video|
|ISO Setting||100 - 25,600 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC 7||DIGIC II|
|DXO Sensor Quality (score)||..||60|
|DXO Color Depth (bits)||..||21.8|
|DXO Dynamic Range (EV)||..||10.8|
|DXO Low Light (ISO)||..||637|
|Screen Specs||Canon G1 X Mark III||Canon XT|
|Viewfinder Type||Electronic viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|Viewfinder Resolution||2360k dots|
|LCD Framing||Live View|
|Rear LCD Size||3.0inch||1.8inch|
|LCD Resolution||1040k dots||115k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G1 X Mark III||Canon XT|
|Focus System||On-Sensor Phase-detect||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||9 shutter flaps/s||3 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||CF cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon G1 X Mark III||Canon XT|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||no 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 G1 X Mark III||Canon XT|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||200 shots per charge||400 shots per charge|
115 x 78 x 51 mm
(4.5 x 3.1 x 2.0 in)
127 x 94 x 64 mm
(5.0 x 3.7 x 2.5 in)
|Camera Weight||399 g (14.1 oz)||540 g (19.0 oz)|
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