Canon 550D vs Pentax K-5
The Canon EOS 550D (called Canon T2i in some regions) and the Pentax K-5 are two digital cameras that were revealed to the public, respectively, in February 2010 and September 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 17.9 megapixels, whereas the Pentax provides 16.1 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 550D||Pentax K-5|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Pentax K mount lenses|
|17.9 MP, APS-C Sensor||16.1 MP, APS-C Sensor|
|1080/30p Video||1080/25p Video|
|ISO 100-6400 (100-12800)||ISO 100-12800 (80-51200)|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 1040k dots||3.0" LCD, 921k dots|
|Fixed screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|3.7 shutter flaps per second||7 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Not weather sealed||Weathersealed body|
|440 shots per battery charge||740 shots per battery charge|
|129 x 98 x 62 mm, 530 g||131 x 97 x 73 mm, 760 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 550D and the Pentax K-5? 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 550D and the Pentax K-5. 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 550D and the Pentax K-5 are of equal size. However, the K-5 is substantially heavier (43 percent) than the 550D. It is noteworthy in this context that the K-5 is splash and dust-proof, while the 550D does not feature any corresponding weather-sealing.
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. 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 550D»||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699||Canon 550D|
|Pentax K-5«||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2010||1,099||Pentax K-5|
|Canon 4000D« »||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399||Canon 4000D|
|Canon 750D« »||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749||Canon 750D|
|Canon 760D« »||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||Canon 760D|
|Canon 1200D« »||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||Canon 1200D|
|Canon 700D« »||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649||Canon 700D|
|Canon 650D« »||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||Canon 650D|
|Canon 600D« »||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599||Canon 600D|
|Canon 1100D« »||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449||Canon 1100D|
|Canon 500D« »||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799||Canon 500D|
|Nikon D5100« »||128 mm||97 mm||79 mm||560 g||660||n||Apr 2011||749||Nikon D5100|
|Olympus E-M5 II« »||124 mm||85 mm||45 mm||469 g||310||Y||Feb 2015||1,099||Olympus E-M5 II|
|Pentax KP« »||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099||Pentax KP|
|Pentax K-3 II« »||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099||Pentax K-3 II|
|Pentax K-3« »||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299||Pentax K-3|
|Sony A77« »||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399||Sony A77|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. 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 550D was launched at a markedly lower price (by 36 percent) than the K-5, which puts it into a different market segment. 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. 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. 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the K-5 is 12 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (550D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
Despite having a smaller sensor, the Canon 550D offers a higher resolution of 17.9 megapixels, compared with 16.1 MP of the Pentax K-5. 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 4.31μm versus 4.81μm for the K-5). Moreover, it should be noted that the K-5 is a somewhat more recent model (by 7 months) than the 550D, 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 550D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 550D for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inch or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inch or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inch or 43.9 x 29.3 cm. The corresponding values for the Pentax K-5 are 24.6 x 16.3 inch or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inch or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inch or 41.7 x 27.6 cm for excellent quality prints.
The Canon EOS 550D has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. The corresponding ISO settings for the Pentax K-5 are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 80-51200.
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. Of the two cameras under consideration, the K-5 offers substantially better image quality than the 550D (overall score 16 points higher). The advantage is based on 1.6 bits higher color depth, 2.6 EV in additional dynamic range, and 0.6 stops in additional low light sensitivity. 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 550D||APS-C||17.9||5184||3456||1080/30p||22.1||11.5||784||66||Canon 550D|
|Pentax K-5||APS-C||16.1||4928||3264||1080/25p||23.7||14.1||1162||82||Pentax K-5|
|Canon 4000D||APS-C||17.9||5184||3456||1080/30p||21.9||11.4||695||63||Canon 4000D|
|Canon 750D||APS-C||24.0||6000||4000||1080/30p||22.7||12.0||919||71||Canon 750D|
|Canon 760D||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70||Canon 760D|
|Canon 1200D||APS-C||17.9||5184||3456||1080/30p||21.9||11.3||724||63||Canon 1200D|
|Canon 700D||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon 700D|
|Canon 650D||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62||Canon 650D|
|Canon 600D||APS-C||17.9||5184||3456||1080/30p||22.1||11.5||793||65||Canon 600D|
|Canon 1100D||APS-C||12.2||4272||2848||720/30p||21.9||11.0||755||62||Canon 1100D|
|Canon 500D||APS-C||15.1||4752||3168||1080/20p||21.7||11.5||663||63||Canon 500D|
|Nikon D5100||APS-C||16.1||4928||3264||1080/30p||23.5||13.6||1183||80||Nikon D5100|
|Olympus E-M5 II||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73||Olympus E-M5 II|
|Pentax KP||APS-C||24.1||6016||4000||1080/60i||..||..||..||..||Pentax KP|
|Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80||Pentax K-3 II|
|Pentax K-3||APS-C||24.1||6016||4000||1080/60i||23.7||13.4||1216||80||Pentax K-3|
|Sony A77||APS-C||24.0||6000||4000||1080/60p||24.0||13.2||801||78||Sony A77|
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 550D provides a higher frame rate than the K-5. It can shoot video footage at 1080/30p, while the Pentax is limited to 1080/25p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 550D and the K-5 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 viewfinder in the K-5 offers a wider field of view (100%) than the one in the 550D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the K-5 has a higher magnification (0.61x vs 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 550D, the Pentax K-5, and comparable cameras.
|Canon 550D||optical||n||3.0||1040||fixed||n||1/4000s||3.7||Y||n||Canon 550D|
|Pentax K-5||optical||Y||3.0||921||fixed||n||1/8000s||7.0||Y||Y||Pentax K-5|
|Canon 4000D||optical||n||2.7||230||fixed||n||1/4000s||3.0||Y||n||Canon 4000D|
|Canon 750D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 750D|
|Canon 760D||optical||Y||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 760D|
|Canon 1200D||optical||n||3.0||460||fixed||n||1/4000s||3.0||Y||n||Canon 1200D|
|Canon 700D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 700D|
|Canon 650D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 650D|
|Canon 600D||optical||n||3.0||1040||swivel||n||1/4000s||3.7||Y||n||Canon 600D|
|Canon 1100D||optical||n||2.7||230||fixed||n||1/4000s||3.0||Y||n||Canon 1100D|
|Canon 500D||optical||n||3.0||920||fixed||n||1/4000s||3.4||Y||n||Canon 500D|
|Nikon D5100||optical||n||3.0||921||swivel||n||1/4000s||4.0||Y||n||Nikon D5100|
|Olympus E-M5 II||2360||n||3.0||1037||swivel||Y||1/8000s||10.0||n||Y||Olympus E-M5 II|
|Pentax KP||optical||n||3.0||921||tilting||n||1/6000s||7.0||Y||Y||Pentax KP|
|Pentax K-3 II||optical||Y||3.2||1037||fixed||n||1/8000s||8.3||n||Y||Pentax K-3 II|
|Pentax K-3||optical||Y||3.2||1037||fixed||n||1/8000s||8.3||Y||Y||Pentax K-3|
|Sony A77||2359||Y||3.0||921||full-flex||n||1/8000s||12.0||Y||Y||Sony A77|
One feature that differentiates the K-5 and the 550D is in-body image stabilization (IBIS). The K-5 reduces the risk of handshake-induced blur with all attached lenses, while the 550D has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.
The Pentax K-5 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.
Concerning the storage of imaging data, both the 550D and the K-5 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 EOS 550D and Pentax K-5 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 550D||Y||stereo||none||Y||-||mini||2.0||-||-||-||Canon 550D|
|Pentax K-5||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Pentax K-5|
|Canon 4000D||Y||mono||mono||-||-||mini||2.0||Y||Y||-||Canon 4000D|
|Canon 750D||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon 750D|
|Canon 760D||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon 760D|
|Canon 1200D||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon 1200D|
|Canon 700D||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 700D|
|Canon 650D||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 650D|
|Canon 600D||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 600D|
|Canon 1100D||Y||stereo||mono||-||-||mini||2.0||-||-||-||Canon 1100D|
|Canon 500D||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon 500D|
|Nikon D5100||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D5100|
|Olympus E-M5 II||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Olympus E-M5 II|
|Pentax KP||Y||stereo||mono||Y||-||none||2.0||Y||-||-||Pentax KP|
|Pentax K-3 II||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Pentax K-3 II|
|Pentax K-3||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Pentax K-3|
|Sony A77||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Sony A77|
Studio photographers will appreciate that the Pentax K-5 (unlike the 550D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 550D and the K-5 have been discontinued, but can regularly be found used on eBay. The 550D was replaced by the Canon 600D, while the K-5 was followed by the Pentax K-5 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Pentax websites.
So what conclusions can be drawn? Which of the two cameras – the Canon 550D or the Pentax K-5 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS 550D:
- More detail: Offers more megapixels (17.9 vs 16.1MP) with a 5% higher linear resolution.
- Better video: Provides higher movie framerates (1080/30p versus 1080/25p).
- More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
- Less heavy: Is lighter (by 230g or 30 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (36 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in February 2010).
Arguments in favor of the Pentax K-5:
- Better image quality: Scores substantially higher (16 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.6 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.6 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (0.6 stops ISO advantage).
- 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 (0.61x vs 0.54x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (7 vs 3.7 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Gets more shots (740 versus 440) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More modern: Was introduced somewhat (7 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the K-5 is the clear winner of the contest (15 : 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 550D and the Pentax K-5 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 550D or the K-5 perform in practice. 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 adjacent summary-table relays the overall verdicts of several of the most popular 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.
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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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 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.
- Canon 550D vs Canon M50
- Canon 550D vs Leica V-LUX 4
- Canon 550D vs Olympus E-510
- Canon 550D vs Panasonic GX9
- Canon 550D vs Panasonic ZS80
- Canon 550D vs Pentax K-70
- Canon 550D vs Sony A99
- Canon M10 vs Pentax K-5
- Olympus PEN-F vs Pentax K-5
- Pentax K-5 vs Pentax K-70
- Pentax K-5 vs Sony A5100
- Pentax K-5 vs Sony A99
Specifications: Canon 550D vs Pentax K-5
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 550D||Pentax K-5|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Pentax K mount lenses|
|Launch Date||February 2010||September 2010|
|Launch Price||USD 699||USD 1099|
|Sensor Specs||Canon 550D||Pentax K-5|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||23.7 x 15.7 mm|
|Sensor Area||332.27 mm2||372.09 mm2|
|Sensor Diagonal||26.8 mm||28.4 mm|
|Sensor Resolution||17.9 Megapixels||16.1 Megapixels|
|Image Resolution||5184 x 3456 pixels||4928 x 3264 pixels|
|Pixel Pitch||4.31 μm||4.81 μm|
|Pixel Density||5.39 MP/cm2||4.32 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/25p Video|
|ISO Setting||100-6400 ISO||100-12800 ISO|
|ISO Boost||100-12800 ISO||80-51200 ISO|
|Image Processor||DIGIC 4||PRIME II|
|DXO Sensor Quality (score)||66||82|
|DXO Color Depth (bits)||22.1||23.7|
|DXO Dynamic Range (EV)||11.5||14.1|
|DXO Low Light (ISO)||784||1162|
|Screen Specs||Canon 550D||Pentax K-5|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1040k dots||921k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 550D||Pentax K-5|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||3.7 shutter flaps/s||7 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||100 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|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 550D||Pentax K-5|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 550D||Pentax K-5|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Life (CIPA)||440 shots per charge||740 shots per charge|
129 x 98 x 62 mm
(5.1 x 3.9 x 2.4 in)
131 x 97 x 73 mm
(5.2 x 3.8 x 2.9 in)
|Camera Weight||530 g (18.7 oz)||760 g (26.8 oz)|
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