Canon 1Ds Mark III vs Pentax K-5
The Canon EOS-1Ds Mark III and the Pentax K-5 are two digital cameras that were announced, respectively, in August 2007 and September 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (1Ds Mark III) and an APS-C (K-5) sensor. The Canon has a resolution of 21 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 1Ds Mark III||Pentax K-5|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Pentax K mount lenses|
|21 MP, Full Frame Sensor||16.1 MP, APS-C Sensor|
|no Video||1080/25p Video|
|ISO 100-1600 (50-3200)||ISO 100-12800 (80-51200)|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 230k dots||3.0" LCD, 921k dots|
|Fixed screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|5 shutter flaps per second||7 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Weathersealed body||Weathersealed body|
|1800 shots per battery charge||740 shots per battery charge|
|150 x 160 x 80 mm, 1385 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-1Ds Mark III 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 1Ds Mark III and the Pentax K-5. 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 Pentax K-5 is considerably smaller (47 percent) than the Canon 1Ds Mark III. Moreover, the K-5 is substantially lighter (45 percent) than the 1Ds Mark III. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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.
Concerning battery life, the 1Ds Mark III gets 1800 shots out of its LP-E4 battery, while the K-5 can take 740 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the 1Ds Mark III has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the K-5, Pentax provides the D-BG4 vertical grip as an optional accessory (see here on eBay).
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 1Ds Mark III»||5.9 in||6.3 in||3.1 in||48.9 oz||1800||Y||Aug 2007||7,999||-||Canon 1Ds Mark III|
|Pentax K-5«||5.2 in||3.8 in||2.9 in||26.8 oz||740||Y||Sep 2010||1,099||-||Pentax K-5|
|Canon 1D X Mark II« »||6.2 in||6.6 in||3.3 in||54.0 oz||1210||Y||Feb 2016||5,999||Canon 1D X Mark II|
|Canon 1D C« »||6.2 in||6.5 in||3.3 in||54.5 oz||1120||Y||Apr 2012||14,999||-||Canon 1D C|
|Canon 5D Mark III« »||6.0 in||4.6 in||3.0 in||33.5 oz||950||Y||Mar 2012||3,499||-||Canon 5D Mark III|
|Canon 6D« »||5.7 in||4.4 in||2.8 in||27.2 oz||1090||Y||Sep 2012||2,099||-||Canon 6D|
|Canon 1D X« »||6.2 in||6.6 in||3.3 in||54.7 oz||1120||Y||Oct 2011||6,799||-||Canon 1D X|
|Canon 5D Mark II« »||6.0 in||4.5 in||3.0 in||30.0 oz||850||Y||Sep 2008||3,499||-||Canon 5D Mark II|
|Canon 1D Mark III« »||6.1 in||6.2 in||3.1 in||40.7 oz||2200||Y||Feb 2007||4,499||-||Canon 1D Mark III|
|Canon 1Ds Mark II« »||6.1 in||6.2 in||3.1 in||42.9 oz||1200||Y||Sep 2004||7,999||-||Canon 1Ds Mark II|
|Canon 1Ds« »||6.1 in||6.2 in||3.1 in||44.6 oz||600||Y||Sep 2002||8,999||-||Canon 1Ds|
|Nikon D7500« »||5.4 in||4.1 in||2.9 in||25.4 oz||950||Y||Apr 2017||1,299||Nikon D7500|
|Nikon D3X« »||6.3 in||6.2 in||3.5 in||44.4 oz||4400||Y||Dec 2008||7,999||-||Nikon D3X|
|Olympus E-M5 II« »||4.9 in||3.3 in||1.8 in||16.5 oz||310||Y||Feb 2015||1,099||Olympus E-M5 II|
|Pentax KP« »||5.2 in||4.0 in||3.0 in||24.8 oz||390||Y||Jan 2017||1,099||Pentax KP|
|Pentax K-3 II« »||5.2 in||3.9 in||3.0 in||28.2 oz||720||Y||Apr 2015||1,099||Pentax K-3 II|
|Pentax K-3« »||5.2 in||3.9 in||3.0 in||28.2 oz||560||Y||Oct 2013||1,299||-||Pentax K-3|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. 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 K-5 was launched at a markedly lower price (by 86 percent) than the 1Ds Mark III, which puts it into a different market segment. 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 size of the sensor inside a digital camera is one of the key determinants 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. 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.
Of the two cameras under consideration, the Canon 1Ds Mark III features a full frame sensor and the Pentax K-5 an APS-C sensor. The sensor area in the K-5 is 57 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 21MP, the 1Ds Mark III offers a higher resolution than the K-5 (16.1MP), but the 1Ds Mark III nevertheless has larger individual pixels (pixel pitch of 6.41μm versus 4.81μm for the K-5) due to its larger sensor. However, the K-5 is a much more recent model (by 3 years and 1 month) than the 1Ds Mark III, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.
The resolution advantage of the Canon 1Ds Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 1Ds Mark III for good quality output (200 dots per inch) amounts to 28.1 x 18.7 inch or 71.3 x 47.5 cm, for very good quality (250 dpi) 22.5 x 15 inch or 57.1 x 38 cm, and for excellent quality (300 dpi) 18.7 x 12.5 inch or 47.5 x 31.7 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-1Ds Mark III has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 50-3200. 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.
For many cameras, data on sensor performance has been reported by DXO Mark. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Canon 1Ds Mark III»||Full Frame||21.0||5616||3744||-||24.0||12.0||1663||80||Canon 1Ds Mark III|
|Pentax K-5«||APS-C||16.1||4928||3264||1080/25p||23.7||14.1||1162||82||Pentax K-5|
|Canon 1D X Mark II« »||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88||Canon 1D X Mark II|
|Canon 1D C« »||Full Frame||17.9||5184||3456||4K/24p||-||-||-||-||Canon 1D C|
|Canon 5D Mark III« »||Full Frame||22.1||5760||3840||1080/30p||24.0||11.7||2293||81||Canon 5D Mark III|
|Canon 6D« »||Full Frame||20.0||5472||3648||1080/30p||23.8||12.1||2340||82||Canon 6D|
|Canon 1D X« »||Full Frame||17.9||5184||3456||1080/30p||23.8||11.8||2786||82||Canon 1D X|
|Canon 5D Mark II« »||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79||Canon 5D Mark II|
|Canon 1D Mark III« »||APS-H||10.1||3888||2592||-||22.7||11.7||1078||71||Canon 1D Mark III|
|Canon 1Ds Mark II« »||Full Frame||16.6||4992||3328||-||23.3||11.3||1480||74||Canon 1Ds Mark II|
|Canon 1Ds« »||Full Frame||11.0||4064||2704||-||21.8||11.0||954||63||Canon 1Ds|
|Nikon D7500« »||APS-C||20.7||5568||3712||4K/30p||24.3||14.0||1483||86||Nikon D7500|
|Nikon D3X« »||Full Frame||24.4||6048||4032||-||24.7||13.7||1992||88||Nikon D3X|
|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|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The K-5 indeed provides for movie recording, while the 1Ds Mark III does not. The highest resolution format that the K-5 can use is 1080/25p.
Apart from body and sensor, cameras can and do differ across a range of features. The 1Ds Mark III 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the 1Ds Mark III has a higher magnification than the one of the K-5 (0.76x vs 0.61x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon 1Ds Mark III and Pentax K-5 in connection with corresponding information for a sample of similar cameras.
|Canon 1Ds Mark III»||optical||Y||3.0||230||fixed||n||1/8000s||5.0||n||n||Canon 1Ds Mark III|
|Pentax K-5«||optical||Y||3.0||921||fixed||n||1/8000s||7.0||Y||Y||Pentax K-5|
|Canon 1D X Mark II« »||optical||Y||3.2||1620||fixed||Y||1/8000s||16.0||n||n||Canon 1D X Mark II|
|Canon 1D C« »||optical||Y||3.2||1040||fixed||n||1/8000s||14.0||n||n||Canon 1D C|
|Canon 5D Mark III« »||optical||Y||3.2||1040||fixed||n||1/8000s||6.0||n||n||Canon 5D Mark III|
|Canon 6D« »||optical||Y||3.0||1040||fixed||n||1/4000s||4.5||n||n||Canon 6D|
|Canon 1D X« »||optical||Y||3.2||1040||fixed||n||1/8000s||14.0||n||n||Canon 1D X|
|Canon 5D Mark II« »||optical||Y||3.0||920||fixed||n||1/8000s||3.9||n||n||Canon 5D Mark II|
|Canon 1D Mark III« »||optical||Y||3.0||230||fixed||n||1/8000s||10.0||n||n||Canon 1D Mark III|
|Canon 1Ds Mark II« »||optical||Y||2.0||230||fixed||n||1/8000s||4.0||n||n||Canon 1Ds Mark II|
|Canon 1Ds« »||optical||Y||2.0||120||fixed||n||1/8000s||3.0||n||n||Canon 1Ds|
|Nikon D7500« »||optical||Y||3.2||922||tilting||Y||1/8000s||8.0||Y||n||Nikon D7500|
|Nikon D3X« »||optical||Y||3.0||922||fixed||n||1/8000s||5.0||n||n||Nikon D3X|
|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|
One feature that differentiates the K-5 and the 1Ds Mark III is in-body image stabilization (IBIS). The K-5 reduces the risk of handshake-induced blur with all attached lenses, while the 1Ds Mark III 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.
The 1Ds Mark III writes its imaging data to Compact Flash or SDHC cards, while the K-5 uses 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-1Ds Mark III and Pentax K-5 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 1Ds Mark III»||Y||-||-||-||-||-||2.0||-||-||-||Canon 1Ds Mark III|
|Pentax K-5«||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Pentax K-5|
|Canon 1D X Mark II« »||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Canon 1D X Mark II|
|Canon 1D C« »||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Canon 1D C|
|Canon 5D Mark III« »||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Canon 5D Mark III|
|Canon 6D« »||Y||mono||mono||Y||-||mini||2.0||Y||-||-||Canon 6D|
|Canon 1D X« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 1D X|
|Canon 5D Mark II« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 5D Mark II|
|Canon 1D Mark III« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 1D Mark III|
|Canon 1Ds Mark II« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 1Ds Mark II|
|Canon 1Ds« »||Y||-||-||-||-||-||FW||-||-||-||Canon 1Ds|
|Nikon D7500« »||Y||stereo||mono||Y||Y||mini||2.0||Y||-||Y||Nikon D7500|
|Nikon D3X« »||Y||-||-||-||-||mini||2.0||-||-||-||Nikon D3X|
|Olympus E-M5 II« »||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Olympus E-M5 II|
|Pentax KP« »||Y||stereo||mono||Y||-||-||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|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the 1Ds Mark III and the K-5 have been discontinued, but can regularly be found used on eBay. The 1Ds Mark III was replaced by the Canon 1DX, 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 is the bottom line? Is there a clear favorite between the Canon 1Ds Mark III and the Pentax K-5? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon EOS-1Ds Mark III:
- More detail: Offers more megapixels (21 vs 16.1MP) with a 14% higher linear resolution.
- Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.61x).
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (1800 versus 740) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in August 2007).
Advantages of the Pentax K-5:
- More dynamic range: Captures a broader range of light and dark details (2.1 EV of extra DR).
- Broader imaging potential: Can capture not only stills but also 1080/25p video.
- More detailed LCD: Has a higher resolution rear screen (921k vs 230k dots).
- Faster burst: Shoots at higher frequency (7 vs 5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (131x97mm vs 150x160mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 625g or 45 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (86 percent cheaper at launch).
- More modern: Reflects 3 years and 1 month of technical progress since the 1Ds Mark III launch.
If the count of relative strengths (bullet points above) is taken as a measure, the K-5 is the clear winner of the contest (11 : 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 1Ds Mark III 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 1Ds Mark III or the K-5. 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 where reviews by experts come in. 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.
|Canon 1Ds Mark III»||-||+ +||4.5/5||-||-||Aug 2007||7,999||-||Canon 1Ds Mark III|
|Pentax K-5«||-||83/100||5/5||4.5/5||4.5/5||Sep 2010||1,099||-||Pentax K-5|
|Canon 1D X Mark II« »||-||89/100||4.5/5||5/5||4.5/5||Feb 2016||5,999||Canon 1D X Mark II|
|Canon 1D C« »||-||-||-||-||-||Apr 2012||14,999||-||Canon 1D C|
|Canon 5D Mark III« »||+ +||82/100||4.5/5||5/5||4.5/5||Mar 2012||3,499||-||Canon 5D Mark III|
|Canon 6D« »||+ +||83/100||4.5/5||4.5/5||4.5/5||Sep 2012||2,099||-||Canon 6D|
|Canon 1D X« »||-||-||4.5/5||4.5/5||4.5/5||Oct 2011||6,799||-||Canon 1D X|
|Canon 5D Mark II« »||91/100||79/100||4/5||5/5||-||Sep 2008||3,499||-||Canon 5D Mark II|
|Canon 1D Mark III« »||-||-||-||o||-||Feb 2007||4,499||-||Canon 1D Mark III|
|Canon 1Ds Mark II« »||-||+ +||-||-||-||Sep 2004||7,999||-||Canon 1Ds Mark II|
|Canon 1Ds« »||-||+ +||-||-||-||Sep 2002||8,999||-||Canon 1Ds|
|Nikon D7500« »||+ +||86/100||5/5||4.5/5||4.5/5||Apr 2017||1,299||Nikon D7500|
|Nikon D3X« »||-||86/100||4/5||5/5||5/5||Dec 2008||7,999||-||Nikon D3X|
|Olympus E-M5 II« »||+ +||81/100||5/5||4.5/5||5/5||Feb 2015||1,099||Olympus E-M5 II|
|Pentax KP« »||-||82/100||5/5||-||4.5/5||Jan 2017||1,099||Pentax KP|
|Pentax K-3 II« »||-||-||5/5||4.5/5||5/5||Apr 2015||1,099||Pentax K-3 II|
|Pentax K-3« »||-||83/100||5/5||4.5/5||5/5||Oct 2013||1,299||-||Pentax K-3|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 1Ds Mark III vs Nikon D5200
- Canon 1Ds Mark III vs Sony RX100
- Canon D60 vs Pentax K-5
- Canon SX740 vs Pentax K-5
- Fujifilm X-A3 vs Pentax K-5
- Fujifilm X-E1 vs Pentax K-5
- Leica M10-P vs Pentax K-5
- Nikon Df vs Pentax K-5
- Olympus E-450 vs Pentax K-5
- Olympus E-PL8 vs Pentax K-5
- Olympus TG-5 vs Pentax K-5
- Pentax K-3 II vs Pentax K-5
Specifications: Canon 1Ds Mark III 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 1Ds Mark III||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||August 2007||September 2010|
|Launch Price||USD 7999||USD 1099|
|Sensor Specs||Canon 1Ds Mark III||Pentax K-5|
|Sensor Format||Full Frame Sensor||APS-C Sensor|
|Sensor Size||36.0 x 24.0 mm||23.7 x 15.7 mm|
|Sensor Area||864 mm2||372.09 mm2|
|Sensor Diagonal||43.3 mm||28.4 mm|
|Sensor Resolution||21 Megapixels||16.1 Megapixels|
|Image Resolution||5616 x 3744 pixels||4928 x 3264 pixels|
|Pixel Pitch||6.41 μm||4.81 μm|
|Pixel Density||2.43 MP/cm2||4.32 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/25p Video|
|ISO Setting||100-1600 ISO||100-12800 ISO|
|ISO Boost||50-3200 ISO||80-51200 ISO|
|Image Processor||DIGIC III (Dual)||PRIME II|
|DXO Sensor Quality (score)||80||82|
|DXO Color Depth (bits)||24.0||23.7|
|DXO Dynamic Range (EV)||12.0||14.1|
|DXO Low Light (ISO)||1663||1162|
|Screen Specs||Canon 1Ds Mark III||Pentax K-5|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||100%|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||230k dots||921k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 1Ds Mark III||Pentax K-5|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||5 shutter flaps/s||7 shutter flaps/s|
|Shutter Life Expectancy||300 000 actuations||100 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||CF or SDHC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Canon 1Ds Mark III||Pentax K-5|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 1Ds Mark III||Pentax K-5|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||1800 shots per charge||740 shots per charge|
150 x 160 x 80 mm
(5.9 x 6.3 x 3.1 in)
131 x 97 x 73 mm
(5.2 x 3.8 x 2.9 in)
|Camera Weight||1385 g (48.9 oz)||760 g (26.8 oz)|
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