Canon G12 vs T4i
The Canon PowerShot G12 and the Canon EOS Rebel T4i (labelled Canon 650D in some countries) are two digital cameras that were officially introduced, respectively, in September 2010 and June 2012. The G12 is a fixed lens compact, while the T4i is a DSLR. The cameras are based on a 1/1.7-inch (G12) and an APS-C (T4i) sensor. The G12 has a resolution of 10 megapixels, whereas the T4i provides 17.9 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 G12 and the Canon EOS Rebel T4i? 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 G12 and the Canon T4i. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side 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 Canon T4i is considerably larger (56 percent) than the Canon G12. In this context, it is worth noting that neither the G12 nor the T4i are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G12 has a lens built in, whereas the T4i 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 T4i 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 G12||112 mm||76 mm||48 mm||401 g||370||n||Sep 2010||499|
|2.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|3.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|4.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449|
|5.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549|
|6.||Canon T5i||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649|
|7.||Canon G15||107 mm||76 mm||40 mm||352 g||350||n||Sep 2012||499|
|8.||Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429|
|9.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599|
|10.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699|
|11.||Fujifilm X10||117 mm||70 mm||57 mm||350 g||270||n||Sep 2011||599|
|12.||Nikon P7800||119 mm||78 mm||50 mm||399 g||350||n||Sep 2013||549|
|13.||Olympus E-450||130 mm||91 mm||53 mm||440 g||500||n||Mar 2009||499|
|14.||Panasonic FZ150||124 mm||82 mm||92 mm||528 g||410||n||Aug 2011||499|
|15.||Panasonic G10||124 mm||84 mm||74 mm||388 g||380||n||Mar 2010||499|
|16.||Panasonic G2||124 mm||84 mm||74 mm||428 g||360||n||Mar 2010||599|
|17.||Panasonic LX5||110 mm||65 mm||43 mm||271 g||400||n||Jul 2010||499|
|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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G12 was launched at a lower price than the T4i, 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 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon G12 features a 1/1.7-inch sensor and the Canon T4i an APS-C sensor. The sensor area in the T4i is 672 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 4.6 and 1.6. The sensor in the G12 has a native 4:3 aspect ratio, while the one in the T4i offers a 3:2 aspect.
Technology-wise, the T4i uses a more advanced image processing engine (DIGIC 5) than the G12 (DIGIC 4), with benefits for noise reduction, color accuracy, and processing speed.
With 17.9MP, the T4i offers a higher resolution than the G12 (10MP), but the T4i nevertheless has larger individual pixels (pixel pitch of 4.31μm versus 2.07μm for the G12) due to its larger sensor. Moreover, the T4i is a somewhat more recent model (by 1 year and 8 months) than the G12, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Canon T4i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T4i for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 cm. The corresponding values for the Canon G12 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 T4i has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon PowerShot G12 has a native sensitivity range from ISO 80 to ISO 3200, which can be extended to ISO 80-12800. The corresponding ISO settings for the Canon EOS Rebel T4i are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600.
For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the T4i offers substantially better image quality than the G12 (overall score 15 points higher). The advantage is based on 1.3 bits higher color depth, and 2.2 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.
| DXO |
|13.||Olympus E-450||Four Thirds||10.0||3648||2736||none||21.5||10.5||512||56|
|15.||Panasonic G10||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52|
|16.||Panasonic G2||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the T4i provides a better video resolution than the G12. It can shoot movie footage at 1080/30p, while the G12 is limited to 720/24p.
Apart from body and sensor, cameras can and do differ across a range of features. The G12 and the T4i are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The adjacent table lists some of the other core features of the Canon G12 and Canon T4i along with similar information for a selection of comparators.
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The T4i has a touchscreen, while the G12 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The T4i has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the G12 does not have a selfie-screen.
Concerning the storage of imaging data, both the G12 and the T4i write their files to SDXC cards. The T4i supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the G12 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 G12 and Canon EOS Rebel T4i and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
It is notable that the T4i has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The G12 does not feature such a mic input.
Both the G12 and the T4i have been discontinued, but can regularly be found used on eBay. The G12 was replaced by the Canon G15, while the T4i was followed by the Canon T5i. 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 how do things add up? Is there a clear favorite between the Canon G12 and the Canon T4i? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon PowerShot G12:
- Ready to shoot: Comes with a built-in lens, while the T4i requires a separate lens.
- More compact: Is smaller (112x76mm vs 133x100mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the T4i).
- Sharper images: Has hand-shake reducing image stabilization built-in.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been on the market for longer (launched in September 2010).
Arguments in favor of the Canon EOS Rebel T4i:
- More detail: Has more megapixels (17.9 vs 10MP), which boosts linear resolution by 37%.
- Better image quality: Scores substantially higher (15 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.3 bits more color depth).
- Better low-light sensitivity: Can shoot in dim conditions (2.2 stops ISO advantage).
- Better jpgs: Has a more modern image processing engine (DIGIC 5 vs DIGIC 4).
- Better video: Provides higher definition movie capture (1080/30p vs 720/24p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 461k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (5 vs 1.1 flaps/sec) to capture the decisive moment.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (440 versus 370) out of a single battery charge.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Was introduced somewhat (1 year and 8 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the T4i is the clear winner of the contest (17 : 6 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 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 G12 and the Canon T4i 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 G12 or the T4i. 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 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], 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 G12||4/5||+||73/100||4.5/5||4.5/5||Sep 2010||499|
|2.||Canon T4i||4/5||+ +||77/100||4.5/5||4.5/5||Jun 2012||849|
|3.||Canon T6s||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|4.||Canon T5||3/5||+||..||4/5||4.5/5||Feb 2014||449|
|5.||Canon G16||4/5||+||..||4.5/5||4.5/5||Aug 2013||549|
|6.||Canon T5i||..||..||76/100||4.5/5||4.5/5||Mar 2013||649|
|7.||Canon G15||4/5||+||76/100||4.5/5||4.5/5||Sep 2012||499|
|8.||Canon SX50||3/5||+ +||72/100||4.5/5||4.5/5||Sep 2012||429|
|9.||Canon T3i||3/5||o||77/100||4.5/5||4.5/5||Feb 2011||599|
|10.||Canon T2i||..||+ +||77/100||4/5||4.5/5||Feb 2010||699|
|11.||Fujifilm X10||..||..||76/100||4/5||4.5/5||Sep 2011||599|
|12.||Nikon P7800||3/5||..||..||4/5||4.5/5||Sep 2013||549|
|13.||Olympus E-450||..||..||..||4/5||4/5||Mar 2009||499|
|14.||Panasonic FZ150||3/5||+ +||76/100||4/5||4.5/5||Aug 2011||499|
|15.||Panasonic G10||3/5||..||70/100||4/5||4/5||Mar 2010||499|
|16.||Panasonic G2||..||..||72/100||4/5||4.5/5||Mar 2010||599|
|17.||Panasonic LX5||4/5||+||73/100||4.5/5||4.5/5||Jul 2010||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Canon G12 vs Canon T4i
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 G12||Canon T4i|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||28-140mm f/2.8-4.5||Canon EF mount lenses|
|Launch Date||September 2010||June 2012|
|Launch Price||USD 499||USD 849|
|Sensor Specs||Canon G12||Canon T4i|
|Sensor Format||1/1.7" Sensor||APS-C Sensor|
|Sensor Size||7.6 x 5.7 mm||22.3 x 14.9 mm|
|Sensor Area||43.32 mm2||332.27 mm2|
|Sensor Diagonal||9.5 mm||26.8 mm|
|Sensor Resolution||10 Megapixels||17.9 Megapixels|
|Image Resolution||3648 x 2736 pixels||5184 x 3456 pixels|
|Pixel Pitch||2.07 μm||4.31 μm|
|Pixel Density||23.04 MP/cm2||5.39 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||720/24p Video||1080/30p Video|
|ISO Setting||80 - 3,200 ISO||100 - 12,800 ISO|
|ISO Boost||80 - 12,800 ISO||100 - 25,600 ISO|
|Image Processor||DIGIC 4||DIGIC 5|
|DXO Sensor Quality (score)||47||62|
|DXO Color Depth (bits)||20.4||21.7|
|DXO Dynamic Range (EV)||11.2||11.2|
|DXO Low Light (ISO)||161||722|
|Screen Specs||Canon G12||Canon T4i|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||2.8inch||3.0inch|
|LCD Resolution||461k dots||1040k dots|
|LCD Attachment||Swivel screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon G12||Canon T4i|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Continuous Shooting||1.1 shutter flaps/s||5 shutter flaps/s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon G12||Canon T4i|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon G12||Canon T4i|
|Battery Life (CIPA)||370 shots per charge||440 shots per charge|
112 x 76 x 48 mm
(4.4 x 3.0 x 1.9 in)
133 x 100 x 79 mm
(5.2 x 3.9 x 3.1 in)
|Camera Weight||401 g (14.1 oz)||575 g (20.3 oz)|
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