Canon 1D Mark IV vs Pentax 645D
The Canon EOS-1D Mark IV and the Pentax 645D are two professional cameras that were revealed to the public, respectively, in October 2009 and March 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-H (1D Mark IV) and a medium format (645D) sensor. The Canon has a resolution of 16 megapixels, whereas the Pentax provides 39.5 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 1D Mark IV||Pentax 645D|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Pentax 645 mount lenses|
|16 MP, APS-H Sensor||39.5 MP, Medium Format Sensor|
|1080/30p Video||no Video|
|ISO 100-12800 (50-102400)||ISO 100-1600|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 920k dots||3.0" LCD, 921k dots|
|Fixed screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|10 shutter flaps per second||1.1 shutter flaps per second|
|Weathersealed body||Weathersealed body|
|1500 shots per battery charge||800 shots per battery charge|
|156 x 157 x 80 mm, 1230 g||156 x 117 x 119 mm, 1480 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D Mark IV and the Pentax 645D? 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 1D Mark IV and the Pentax 645D 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 width, height and depth measures 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 645D is notably smaller (25 percent) than the Canon 1D Mark IV. However, the 645D is markedly heavier (20 percent) than the 1D Mark IV. 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 1D Mark IV gets 1500 shots out of its LP-E4 battery, while the 645D can take 800 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the 1D Mark IV has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Canon 1D Mark IV»||6.1 in||6.2 in||3.1 in||43.4 oz||1500||Y||Oct 2009||4,999||-||Canon 1D Mark IV|
|Pentax 645D«||6.1 in||4.6 in||4.7 in||52.2 oz||800||Y||Mar 2010||9,995||-||Pentax 645D|
|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 X« »||6.2 in||6.6 in||3.3 in||54.7 oz||1120||Y||Oct 2011||6,799||-||Canon 1D X|
|Canon 60D« »||5.7 in||4.2 in||3.1 in||26.6 oz||1100||Y||Aug 2010||1,399||-||Canon 60D|
|Canon 7D« »||5.8 in||4.4 in||2.9 in||30.3 oz||800||Y||Sep 2009||1,699||-||Canon 7D|
|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 1D Mark II« »||6.1 in||6.2 in||3.1 in||54.1 oz||1200||Y||Jan 2004||4,499||-||Canon 1D Mark II|
|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|
|Leica S Typ 006« »||6.3 in||4.7 in||3.1 in||44.4 oz||..||Y||Sep 2012||21,950||-||Leica S Typ 006|
|Nikon D4« »||6.3 in||6.2 in||3.6 in||47.3 oz||2600||Y||Jan 2012||5,999||-||Nikon D4|
|Nikon D3S« »||6.3 in||6.2 in||3.5 in||43.7 oz||4200||Y||Oct 2009||5,199||-||Nikon D3S|
|Pentax 645Z« »||6.1 in||4.6 in||4.8 in||54.7 oz||650||Y||Apr 2014||8,499||Pentax 645Z|
|Note: Measurements and pricing do not include easily detachable parts, such as 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 1D Mark IV was launched at a markedly lower price (by 50 percent) than the 645D, 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.
The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 1D Mark IV features an APS-H sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 180 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 0.79. The sensor in the 1D Mark IV has a native 3:2 aspect ratio, while the one in the 645D offers a 4:3 aspect.
With 39.5MP, the 645D offers a higher resolution than the 1D Mark IV (16MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 5.70μm for the 1D Mark IV) due to its larger sensor. Moreover, the 645D is a somewhat more recent model (by 4 months) than the 1D Mark IV, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the 645D has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax 645D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645D for good quality output (200 dots per inch) amounts to 36.3 x 27.2 inch or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inch or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inch or 61.5 x 46.1 cm. The corresponding values for the Canon 1D Mark IV are 24.5 x 16.3 inch or 62.2 x 41.5 cm for good quality, 19.6 x 13.1 inch or 49.7 x 33.2 cm for very good quality, and 16.3 x 10.9 inch or 41.5 x 27.6 cm for excellent quality prints.
The Canon EOS-1D Mark IV has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 50-102400. The corresponding ISO settings for the Pentax 645D are ISO 100 to ISO 1600 (no boost).
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. Of the two cameras under consideration, the 645D has a markedly higher DXO score than the 1D Mark IV (overall score 8 points higher), which will translate into better image quality. The advantage is based on 1.8 bits higher color depth, 0.6 EV in additional dynamic range, and 0.1 stops of reduced 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 1D Mark IV»||APS-H||16.0||4896||3264||1080/30p||22.8||12.0||1320||74||Canon 1D Mark IV|
|Pentax 645D«||Medium Format||39.5||7264||5440||-||24.6||12.6||1262||82||Pentax 645D|
|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 X« »||Full Frame||17.9||5184||3456||1080/30p||23.8||11.8||2786||82||Canon 1D X|
|Canon 60D« »||APS-C||17.9||5184||3456||1080/30p||22.2||11.5||813||66||Canon 60D|
|Canon 7D« »||APS-C||17.9||5184||3456||1080/30p||22.0||11.7||854||66||Canon 7D|
|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 1D Mark II« »||APS-H||8.2||3504||2336||-||22.3||11.1||1003||66||Canon 1D Mark II|
|Canon 1Ds Mark II« »||Full Frame||16.6||4992||3328||-||23.3||11.3||1480||74||Canon 1Ds Mark II|
|Leica S Typ 006« »||Medium Format||37.5||7500||5000||-||23.9||12.2||824||76||Leica S Typ 006|
|Nikon D4« »||Full Frame||16.2||4928||3280||1080/30p||24.7||13.1||2965||89||Nikon D4|
|Nikon D3S« »||Full Frame||12.1||4256||2832||720/24p||23.5||12.0||3253||82||Nikon D3S|
|Pentax 645Z« »||Medium Format||51.1||8256||6192||1080/60i||26.0||14.7||4505||101||Pentax 645Z|
Many modern cameras are not only capable of taking still images, but can also record movies. The 1D Mark IV indeed provides movie recording capabilities, while the 645D does not. The highest resolution format that the 1D Mark IV can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 1D Mark IV and the 645D 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 1D Mark IV offers a wider field of view (100%) than the one in the 645D (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645D has a higher magnification (0.78x vs 0.58x), 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 1D Mark IV, the Pentax 645D, and comparable cameras.
|Canon 1D Mark IV»||optical||Y||3.0||920||fixed||n||1/8000s||10.0||n||n||Canon 1D Mark IV|
|Pentax 645D«||optical||Y||3.0||921||fixed||n||1/4000s||1.1||n||n||Pentax 645D|
|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 X« »||optical||Y||3.2||1040||fixed||n||1/8000s||14.0||n||n||Canon 1D X|
|Canon 60D« »||optical||Y||3.0||1040||swivel||n||1/8000s||5.3||Y||n||Canon 60D|
|Canon 7D« »||optical||Y||3.0||920||fixed||n||1/8000s||8.0||Y||n||Canon 7D|
|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 1D Mark II« »||optical||Y||2.0||230||fixed||n||1/8000s||8.3||n||n||Canon 1D Mark II|
|Canon 1Ds Mark II« »||optical||Y||2.0||230||fixed||n||1/8000s||4.0||n||n||Canon 1Ds Mark II|
|Leica S Typ 006« »||optical||Y||3.0||922||fixed||n||1/4000s||1.5||n||n||Leica S Typ 006|
|Nikon D4« »||optical||Y||3.2||921||fixed||n||1/8000s||11.0||n||n||Nikon D4|
|Nikon D3S« »||optical||Y||3.0||921||fixed||n||1/8000s||11.0||n||n||Nikon D3S|
|Pentax 645Z« »||optical||Y||3.2||1037||tilting||n||1/4000s||3.0||n||n||Pentax 645Z|
The Pentax 645D 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 1D Mark IV writes its imaging data to Compact Flash or SDHC cards, while the 645D uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.
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-1D Mark IV and Pentax 645D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 1D Mark IV»||Y||stereo||-||Y||-||mini||2.0||-||-||-||Canon 1D Mark IV|
|Pentax 645D«||Y||stereo||-||-||-||-||2.0||-||-||-||Pentax 645D|
|Canon 1D X Mark II« »||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Canon 1D X Mark II|
|Canon 1D X« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 1D X|
|Canon 60D« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 60D|
|Canon 7D« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 7D|
|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 1D Mark II« »||Y||-||-||-||-||-||1.1||-||-||-||Canon 1D Mark II|
|Canon 1Ds Mark II« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 1Ds Mark II|
|Leica S Typ 006« »||Y||-||-||-||-||mini||2.0||-||-||-||Leica S Typ 006|
|Nikon D4« »||Y||mono||mono||-||-||micro||2.0||-||-||-||Nikon D4|
|Nikon D3S« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Nikon D3S|
|Pentax 645Z« »||Y||stereo||mono||Y||-||mini||3.0||-||-||-||Pentax 645Z|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the 1D Mark IV and the 645D have been discontinued, but can regularly be found used on eBay. The 645D was replaced by the Pentax 645Z, while the 1D Mark IV does not have a direct successor. 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? Is there a clear favorite between the Canon 1D Mark IV and the Pentax 645D? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS-1D Mark IV:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Broader imaging potential: Can record not only still images but also 1080/30p movies.
- More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 1.1 flaps/sec) to capture the decisive moment.
- Less heavy: Is lighter (by 250g or 17 percent) and hence easier to carry around.
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (1500 versus 800) on a single battery charge.
- More affordable: Was introduced into a lower priced category (50 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in October 2009).
Advantages of the Pentax 645D:
- More detail: Has more megapixels (39.5 vs 16MP), which boosts linear resolution by 54%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores markedly higher (8 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.8 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (0.6 EV of extra DR).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.58x).
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (156x117mm vs 156x157mm) and will fit more readily into a bag.
- More modern: Was introduced somewhat (4 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the 1D Mark IV comes out slightly ahead of the 645D (10 : 9 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 1D Mark IV and the Pentax 645D 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 says little about, for example, the shooting experience and imaging performance of the 1D Mark IV and the 645D in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is where reviews by experts come in. 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 1D Mark IV»||-||89/100||-||5/5||-||Oct 2009||4,999||-||Canon 1D Mark IV|
|Pentax 645D«||-||-||-||4.5/5||-||Mar 2010||9,995||-||Pentax 645D|
|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 X« »||-||-||4.5/5||4.5/5||4.5/5||Oct 2011||6,799||-||Canon 1D X|
|Canon 60D« »||+||79/100||4/5||5/5||4.5/5||Aug 2010||1,399||-||Canon 60D|
|Canon 7D« »||+ +||84/100||4.5/5||5/5||4.5/5||Sep 2009||1,699||-||Canon 7D|
|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 1D Mark II« »||-||+ +||-||o||-||Jan 2004||4,499||-||Canon 1D Mark II|
|Canon 1Ds Mark II« »||-||+ +||-||-||-||Sep 2004||7,999||-||Canon 1Ds Mark II|
|Leica S Typ 006« »||-||-||-||-||-||Sep 2012||21,950||-||Leica S Typ 006|
|Nikon D4« »||-||-||4.5/5||-||4.5/5||Jan 2012||5,999||-||Nikon D4|
|Nikon D3S« »||-||89/100||4.5/5||5/5||5/5||Oct 2009||5,199||-||Nikon D3S|
|Pentax 645Z« »||-||-||4.5/5||5/5||5/5||Apr 2014||8,499||Pentax 645Z|
|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. 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D Mark IV vs Canon 5D Mark III
- Canon 1D Mark IV vs Panasonic GF3
- Canon 1D Mark IV vs Sony A7 II
- Canon 1D Mark IV vs Sony HX90V
- Fujifilm X-T2 vs Pentax 645D
- Fujifilm XQ1 vs Pentax 645D
- Panasonic FZ2500 vs Pentax 645D
- Panasonic GX8 vs Pentax 645D
- Panasonic LX100 II vs Pentax 645D
- Panasonic TZ100 vs Pentax 645D
- Pentax 645D vs Sony A5100
- Pentax 645D vs Sony A6600
Specifications: Canon 1D Mark IV vs Pentax 645D
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 1D Mark IV||Pentax 645D|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Pentax 645 mount lenses|
|Launch Date||October 2009||March 2010|
|Launch Price||USD 4999||USD 9995|
|Sensor Specs||Canon 1D Mark IV||Pentax 645D|
|Sensor Format||APS-H Sensor||Medium Format Sensor|
|Sensor Size||27.9 x 18.6 mm||44.0 x 33.0 mm|
|Sensor Area||518.94 mm2||1452 mm2|
|Sensor Diagonal||33.5 mm||55 mm|
|Sensor Resolution||16 Megapixels||39.5 Megapixels|
|Image Resolution||4896 x 3264 pixels||7264 x 5440 pixels|
|Pixel Pitch||5.70 μm||6.06 μm|
|Pixel Density||3.08 MP/cm2||2.72 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100-12800 ISO||100-1600 ISO|
|ISO Boost||50-102400 ISO||no Enhancement|
|Image Processor||DIGIC IV||PRIME II|
|DXO Sensor Quality (score)||74||82|
|DXO Color Depth (bits)||22.8||24.6|
|DXO Dynamic Range (EV)||12.0||12.6|
|DXO Low Light (ISO)||1320||1262|
|Screen Specs||Canon 1D Mark IV||Pentax 645D|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||98%|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||920k dots||921k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 1D Mark IV||Pentax 645D|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||10 shutter flaps/s||1.1 shutter flaps/s|
|Shutter Life Expectancy||300 000 actuations||50 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||CF or SDHC cards||SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|UHS card support||no||no|
|Connectivity Specs||Canon 1D Mark IV||Pentax 645D|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 1D Mark IV||Pentax 645D|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||1500 shots per charge||800 shots per charge|
156 x 157 x 80 mm
(6.1 x 6.2 x 3.1 in)
156 x 117 x 119 mm
(6.1 x 4.6 x 4.7 in)
|Camera Weight||1230 g (43.4 oz)||1480 g (52.2 oz)|
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