Canon SX40 vs T3i
The Canon PowerShot SX40 HS and the Canon EOS Rebel T3i (labelled Canon 600D in some countries) are two digital cameras that were officially introduced, respectively, in September 2011 and February 2011. The SX40 is a fixed lens compact, while the T3i is a DSLR. The cameras are based on a 1/2.3-inch (SX40) and an APS-C (T3i) sensor. The SX40 has a resolution of 12 megapixels, whereas the T3i provides 17.9 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon SX40||Canon T3i|
|Fixed lens compact camera||Digital single lens reflex|
|24-840mm f/2.7-5.8||Canon EF mount lenses|
|12 MP, 1/2.3" Sensor||17.9 MP, APS-C Sensor|
|1080/24p Video||1080/30p Video|
|ISO 100-3,200||ISO 100-6,400 (100 - 12,800)|
|Electronic viewfinder (202k dots)||Optical viewfinder|
|2.7 LCD, 230k dots||3.0 LCD, 1040k dots|
|Swivel screen (not touch-sensitive)||Swivel screen (not touch-sensitive)|
|10.3 shutter flaps per second||3.7 shutter flaps per second|
|380 shots per battery charge||440 shots per battery charge|
|123 x 92 x 108 mm, 600 g||133 x 100 x 80 mm, 570 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX40 HS and the Canon EOS Rebel T3i? 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 SX40 and the Canon T3i 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 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 Canon T3i is notably larger (18 percent) than the Canon SX40. In this context, it is worth noting that neither the SX40 nor the T3i are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX40 has a lens built in, whereas the T3i 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 T3i and their specifications in the Canon EF Lens Catalog.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Canon SX40||4.8 in||3.6 in||4.3 in||21.2 oz||380||n||Sep 2011||429|
|Canon T3i||5.2 in||3.9 in||3.1 in||20.1 oz||440||n||Feb 2011||599|
|Canon T6s||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||649|
|Canon SX60||5.0 in||3.7 in||4.5 in||22.9 oz||340||n||Sep 2014||549|
|Canon T5i||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649|
|Canon G1 X||4.6 in||3.2 in||2.6 in||18.8 oz||250||n||Jan 2012||799|
|Canon M||4.3 in||2.6 in||1.3 in||10.5 oz||230||n||Jul 2012||599|
|Canon SX50||4.8 in||3.4 in||4.2 in||21.0 oz||315||n||Sep 2012||429|
|Canon T4i||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849|
|Canon T3||5.1 in||3.9 in||3.1 in||17.5 oz||700||n||Feb 2011||449|
|Canon SX30||4.8 in||3.6 in||4.3 in||21.2 oz||370||n||Sep 2010||429|
|Canon T2i||5.1 in||3.9 in||2.4 in||18.7 oz||440||n||Feb 2010||699|
|Canon SX20||4.8 in||3.5 in||3.4 in||21.2 oz||..||n||Aug 2009||399|
|Canon SX10||4.8 in||3.5 in||3.4 in||21.2 oz||..||n||Sep 2008||399|
|Panasonic FZ200||4.9 in||3.4 in||4.3 in||20.7 oz||540||n||Jul 2012||599|
|Panasonic FZ150||4.9 in||3.2 in||3.6 in||18.6 oz||410||n||Aug 2011||499|
|Panasonic FZ100||4.9 in||3.2 in||3.6 in||19.0 oz||410||n||Jul 2010||499|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX40 was launched at a lower price than the T3i, 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 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon SX40 features a 1/2.3-inch sensor and the Canon T3i an APS-C sensor. The sensor area in the T3i is 1086 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.6. The sensor in the SX40 has a native 4:3 aspect ratio, while the one in the T3i offers a 3:2 aspect.
With 17.9MP, the T3i offers a higher resolution than the SX40 (12MP), but the T3i nevertheless has larger individual pixels (pixel pitch of 4.31μm versus 1.53μm for the SX40) due to its larger sensor. However, the SX40 is a somewhat more recent model (by 7 months) than the T3i, and its sensor might 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 SX40 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon T3i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T3i 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 SX40 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.
The Canon PowerShot SX40 HS has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Canon EOS Rebel T3i are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-12800.
For many cameras, data on sensor performance has been reported by DXO Mark. 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"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the T3i provides a faster frame rate than the SX40. It can shoot movie footage at 1080/30p, while the SX40 is limited to 1080/24p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the SX40 has an electronic viewfinder (202k dots), while the T3i 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 SX40 and Canon T3i along with similar information for a selection of comparators.
|Canon G1 X||optical||n||3.0||922||Swivel||n||1/4000s||1.9||Y||Y|
Concerning the storage of imaging data, both the SX40 and the T3i write their files to SDXC 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 SX40 HS and Canon EOS Rebel T3i and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Canon G1 X||Y||stereo||mono||-||-||mini||2.0||-||-||-|
It is notable that the T3i has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The SX40 does not feature such a mic input.
Both the SX40 and the T3i have been discontinued, but can regularly be found used on eBay. The T3i was replaced by the Canon T4i, while the SX40 was followed by the Canon SX50. 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 SX40 better than the Canon T3i or vice versa? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Canon PowerShot SX40 HS:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Faster burst: Shoots at higher frequency (10.3 vs 3.7 flaps/sec) to capture the decisive moment.
- Ready to shoot: Comes with a built-in lens, while the T3i requires a separate lens.
- More compact: Is smaller (123x92mm vs 133x100mm) and thus needs less room in the bag.
- 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 modern: Is somewhat more recent (announced 7 months after the T3i).
Advantages of the Canon EOS Rebel T3i:
- More detail: Has more megapixels (17.9 vs 12MP), which boosts linear resolution by 25%.
- 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.
- Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- 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 detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/3200s) to freeze action.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (440 versus 380) out of a single battery charge.
- More heavily discounted: Has been on the market for longer (launched in February 2011).
If the count of relative strengths (bullet points above) is taken as a measure, the T3i is the clear winner of the contest (16 : 8 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 SX40 and the Canon T3i 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the SX40 or the T3i. 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 expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Canon SX40||+||..||4.5/5||5/5||4/5||Sep 2011||429|
|Canon T3i||o||77/100||4.5/5||5/5||4.5/5||Feb 2011||599|
|Canon T6s||+||77/100||4.5/5||4.5/5||4.5/5||Feb 2015||649|
|Canon SX60||+ +||75/100||4/5||..||4.5/5||Sep 2014||549|
|Canon T5i||..||76/100||4.5/5||4.5/5||4.5/5||Mar 2013||649|
|Canon G1 X||+||76/100||4/5||4/5||4.5/5||Jan 2012||799|
|Canon M||+||..||4/5||3.5/5||4/5||Jul 2012||599|
|Canon SX50||+ +||72/100||4.5/5||..||4.5/5||Sep 2012||429|
|Canon T4i||+ +||77/100||4.5/5||4.5/5||4.5/5||Jun 2012||849|
|Canon T3||80/100||69/100||4/5||4/5||4.5/5||Feb 2011||449|
|Canon SX30||+ +||..||3.5/5||4.5/5||4/5||Sep 2010||429|
|Canon T2i||+ +||77/100||4/5||5/5||4.5/5||Feb 2010||699|
|Canon SX20||+ +||73/100||..||4/5||4/5||Aug 2009||399|
|Canon SX10||+ +||..||..||4.5/5||4/5||Sep 2008||399|
|Panasonic FZ200||+ +||80/100||4.5/5||4.5/5||4.5/5||Jul 2012||599|
|Panasonic FZ150||+ +||76/100||4/5||5/5||4.5/5||Aug 2011||499|
|Panasonic FZ100||+||..||4.5/5||..||4.5/5||Jul 2010||499|
|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. 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 are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Canon SX40 vs Canon T3i
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 SX40||Canon T3i|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||24-840mm f/2.7-5.8||Canon EF mount lenses|
|Launch Date||September 2011||February 2011|
|Launch Price||USD 429||USD 599|
|Sensor Specs||Canon SX40||Canon T3i|
|Sensor Format||1/2.3" Sensor||APS-C Sensor|
|Sensor Size||6.17 x 4.55 mm||22.3 x 14.9 mm|
|Sensor Area||28.0735 mm2||332.27 mm2|
|Sensor Diagonal||7.7 mm||26.8 mm|
|Sensor Resolution||12 Megapixels||17.9 Megapixels|
|Image Resolution||4000 x 3000 pixels||5184 x 3456 pixels|
|Pixel Pitch||1.53 μm||4.31 μm|
|Pixel Density||42.74 MP/cm2||5.39 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||1080/24p Video||1080/30p Video|
|ISO Setting||100 - 3,200 ISO||100 - 6,400 ISO|
|ISO Boost||no Enhancement||100 - 12,800 ISO|
|DXO Sensor Quality (score)||..||65|
|DXO Color Depth (bits)||..||22.1|
|DXO Dynamic Range (EV)||..||11.5|
|DXO Low Light (ISO)||..||793|
|Screen Specs||Canon SX40||Canon T3i|
|Viewfinder Type||Electronic viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|Viewfinder Resolution||202k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||2.7inch||3.0inch|
|LCD Resolution||230k dots||1040k dots|
|LCD Attachment||Swivel screen||Swivel screen|
|Shooting Specs||Canon SX40||Canon T3i|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Continuous Shooting||10.3 shutter flaps/s||3.7 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||no|
|Connectivity Specs||Canon SX40||Canon T3i|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||YES HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon SX40||Canon T3i|
|Battery Life (CIPA)||380 shots per charge||440 shots per charge|
123 x 92 x 108 mm
(4.8 x 3.6 x 4.3 in)
133 x 100 x 80 mm
(5.2 x 3.9 x 3.1 in)
|Camera Weight||600 g (21.2 oz)||570 g (20.1 oz)|
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