Nikon D3X vs Pentax K-1
The Nikon D3X and the Pentax K-1 are two digital cameras that were announced, respectively, in December 2008 and February 2016. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a full frame sensor. The Nikon has a resolution of 24.4 megapixels, whereas the Pentax provides 36.2 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 Nikon D3X and the Pentax K-1? 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 Nikon D3X and the Pentax K-1. 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 dimensions are rounded to the nearest millimeter.
The K-1 can be obtained in two different colors (black, silver), while the D3X is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-1 is considerably smaller (40 percent) than the Nikon D3X. Moreover, the K-1 is markedly lighter (20 percent) than the D3X. 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 D3X gets 4400 shots out of its EN-EL4a battery, while the K-1 can take 760 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the D3X 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-1, Pentax provides the D-BG6 vertical grip as an optional accessory (see here on ebay).
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Nikon D3X||160 mm||157 mm||88 mm||1260 g||4400||Y||Dec 2008||7,999||ebay.com|
|2.||Pentax K-1||137 mm||110 mm||86 mm||1010 g||760||Y||Feb 2016||1,799||ebay.com|
|3.||Canon 5D Mark IV||151 mm||116 mm||76 mm||890 g||900||Y||Aug 2016||3,499||amazon.com|
|4.||Canon 1Ds Mark III||150 mm||160 mm||80 mm||1385 g||1800||Y||Aug 2007||7,999||ebay.com|
|5.||Nikon D5||160 mm||159 mm||92 mm||1415 g||3780||Y||Jan 2016||6,499||ebay.com|
|6.||Nikon D500||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999||amazon.com|
|7.||Nikon D4S||160 mm||157 mm||91 mm||1350 g||3020||Y||Feb 2014||6,499||ebay.com|
|8.||Nikon D750||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299||ebay.com|
|9.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999||amazon.com|
|10.||Nikon D4||160 mm||157 mm||91 mm||1340 g||2600||Y||Jan 2012||5,999||ebay.com|
|11.||Nikon D600||141 mm||113 mm||82 mm||850 g||900||Y||Sep 2012||2,099||ebay.com|
|12.||Nikon D3S||160 mm||157 mm||88 mm||1240 g||4200||Y||Oct 2009||5,199||ebay.com|
|13.||Nikon D700||147 mm||123 mm||77 mm||1074 g||1000||Y||Jul 2008||2,999||ebay.com|
|14.||Nikon D3||160 mm||157 mm||88 mm||1300 g||4300||Y||Aug 2007||4,999||ebay.com|
|15.||Olympus E-M1 II||134 mm||91 mm||67 mm||574 g||440||Y||Sep 2016||1,999||ebay.com|
|16.||Pentax K-1 II||137 mm||110 mm||86 mm||1010 g||670||Y||Feb 2018||1,999||amazon.com|
|17.||Sony A99 II||143 mm||104 mm||76 mm||849 g||490||Y||Sep 2016||3,199||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The K-1 was launched at a markedly lower price (by 78 percent) than the D3X, 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 imaging sensor is a crucial determinant 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 more expensive and lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature a full frame sensor and have a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the review cameras among the large-sensor cameras that aim for top notch image quality. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
While the two cameras under review share the same sensor size, the K-1 offers a higher resolution of 36.2 megapixels, compared with 24.4 MP of the D3X. This megapixels advantage translates into a 22 percent gain in linear resolution. On the other hand, these sensor specs imply that the K-1 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.88μm versus 5.94μm for the D3X). However, it should be noted that the K-1 is much more recent (by 7 years and 2 months) than the D3X, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the K-1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax K-1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-1 for good quality output (200 dots per inch) amounts to 36.8 x 24.6 inches or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inches or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inches or 62.3 x 41.6 cm. The corresponding values for the Nikon D3X are 30.2 x 20.2 inches or 76.8 x 51.2 cm for good quality, 24.2 x 16.1 inches or 61.4 x 41 cm for very good quality, and 20.2 x 13.4 inches or 51.2 x 34.1 cm for excellent quality prints.
Unlike the D3X, the K-1 has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Nikon D3X has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 50-6400. The corresponding ISO settings for the Pentax K-1 are ISO 100 to ISO 204800 (no boost).
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
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"). Of the two cameras under consideration, the K-1 has a markedly higher DXO score than the D3X (overall score 8 points higher), which will translate into better image quality. The advantage is based on 0.7 bits higher color depth, 0.9 EV in additional dynamic range, and 0.7 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.
|1.||Nikon D3X||Full Frame||24.4||6048||4032||none||24.7||13.7||1992||88|
|2.||Pentax K-1||Full Frame||36.2||7360||4912||1080/60i||25.4||14.6||3280||96|
|3.||Canon 5D Mark IV||Full Frame||30.1||6720||4480||4K/30p||24.8||13.6||2995||91|
|4.||Canon 1Ds Mark III||Full Frame||21.0||5616||3744||none||24.0||12.0||1663||80|
|5.||Nikon D5||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|7.||Nikon D4S||Full Frame||16.2||4928||3280||1080/60p||24.4||13.3||3074||89|
|8.||Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|9.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|10.||Nikon D4||Full Frame||16.2||4928||3280||1080/30p||24.7||13.1||2965||89|
|11.||Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|12.||Nikon D3S||Full Frame||12.1||4256||2832||720/24p||23.5||12.0||3253||82|
|13.||Nikon D700||Full Frame||12.1||4256||2832||none||23.5||12.2||2303||80|
|14.||Nikon D3||Full Frame||12.1||4256||2832||none||23.5||12.2||2290||81|
|15.||Olympus E-M1 II||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80|
|16.||Pentax K-1 II||Full Frame||36.2||7360||4912||1080/60i||25.1||14.0||2698||93|
|17.||Sony A99 II||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The K-1 indeed provides for movie recording, while the D3X does not. The highest resolution format that the K-1 can use is 1080/60i.
Beyond body and sensor, cameras can and do differ across a range of features. The D3X and the K-1 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%), as well as the same magnification (0.70x). The adjacent table lists some of the other core features of the Nikon D3X and Pentax K-1 along with similar information for a selection of comparators.
|1.||Nikon D3X||optical||Y||3.0 / 922||fixed||n||1/8000s||5.0/s||n||n|
|2.||Pentax K-1||optical||Y||3.2 / 1037||full-flex||n||1/8000s||4.4/s||n||Y|
|3.||Canon 5D Mark IV||optical||Y||3.2 / 1620||fixed||Y||1/8000s||7.0/s||n||n|
|4.||Canon 1Ds Mark III||optical||Y||3.0 / 230||fixed||n||1/8000s||5.0/s||n||n|
|5.||Nikon D5||optical||Y||3.2 / 2359||fixed||Y||1/8000s||14.0/s||n||n|
|6.||Nikon D500||optical||Y||3.2 / 2359||tilting||Y||1/8000s||10.0/s||n||n|
|7.||Nikon D4S||optical||Y||3.2 / 921||fixed||n||1/8000s||11.0/s||n||n|
|8.||Nikon D750||optical||Y||3.2 / 1229||tilting||n||1/4000s||6.0/s||Y||n|
|9.||Nikon D610||optical||Y||3.2 / 921||fixed||n||1/4000s||6.0/s||Y||n|
|10.||Nikon D4||optical||Y||3.2 / 921||fixed||n||1/8000s||11.0/s||n||n|
|11.||Nikon D600||optical||Y||3.0 / 921||fixed||n||1/4000s||5.5/s||Y||n|
|12.||Nikon D3S||optical||Y||3.0 / 921||fixed||n||1/8000s||11.0/s||n||n|
|13.||Nikon D700||optical||Y||3.0 / 922||fixed||n||1/8000s||8.0/s||Y||n|
|14.||Nikon D3||optical||Y||3.0 / 922||fixed||n||1/8000s||11.0/s||n||n|
|15.||Olympus E-M1 II||2360||n||3.0 / 1037||swivel||Y||1/8000s||18.0/s||n||Y|
|16.||Pentax K-1 II||optical||Y||3.2 / 1037||full-flex||n||1/8000s||4.4/s||n||Y|
|17.||Sony A99 II||2400||Y||3.0 / 1229||full-flex||n||1/8000s||12.0/s||n||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the K-1 and the D3X is in-body image stabilization (IBIS). The K-1 reduces the risk of handshake-induced blur with all attached lenses, while the D3X offers no blur reduction with lenses that themselves do not provide optical image stabilization.
The Nikon D3X and the Pentax K-1 both have 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 D3X writes its imaging data to Compact Flash cards, while the K-1 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 Nikon D3X and Pentax K-1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon D3X||Y||- / -||-||-||mini||2.0||-||-||-|
|2.||Pentax K-1||Y||stereo / mono||Y||Y||micro||2.0||Y||-||-|
|3.||Canon 5D Mark IV||Y||mono / mono||Y||Y||mini||3.0||Y||Y||-|
|4.||Canon 1Ds Mark III||Y||mono / -||-||-||-||2.0||-||-||-|
|5.||Nikon D5||Y||stereo / mono||Y||Y||mini||3.0||-||-||-|
|6.||Nikon D500||Y||stereo / mono||Y||Y||mini||3.0||Y||Y||Y|
|7.||Nikon D4S||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|8.||Nikon D750||Y||stereo / mono||Y||Y||mini||2.0||Y||-||-|
|9.||Nikon D610||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|10.||Nikon D4||Y||mono / mono||Y||Y||micro||2.0||-||-||-|
|11.||Nikon D600||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|12.||Nikon D3S||Y||stereo / -||-||-||mini||2.0||-||-||-|
|13.||Nikon D700||Y||- / -||-||-||mini||2.0||-||-||-|
|14.||Nikon D3||Y||- / -||-||-||mini||2.0||-||-||-|
|15.||Olympus E-M1 II||Y||stereo / mono||Y||Y||micro||3.0||Y||-||-|
|16.||Pentax K-1 II||Y||stereo / mono||Y||Y||micro||2.0||Y||-||-|
|17.||Sony A99 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||Y|
It is notable that the K-1 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D3X does not provide wifi capability.
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Travel and landscape photographers will find it useful that the K-1 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the D3X and the K-1 have been discontinued, but can regularly be found used on ebay. The K-1 was replaced by the Pentax K-1 II, while the D3X does not have a direct successor. Further information on the features and operation of the D3X and K-1 can be found, respectively, in the Nikon D3X Manual (free pdf) or the online Pentax K-1 Manual.
So how do things add up? Is there a clear favorite between the Nikon D3X and the Pentax K-1? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Nikon D3X:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Faster burst: Shoots at higher frequency (5 vs 4.4 flaps/sec) to capture the decisive moment.
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (4400 versus 760) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in December 2008).
Arguments in favor of the Pentax K-1:
- More detail: Has more megapixels (36.2 vs 24.4MP), which boosts linear resolution by 22%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Scores markedly higher (8 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (0.9 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (0.7 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1037k vs 922k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- More compact: Is smaller (137x110mm vs 160x157mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 250g or 20 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- More affordable: Was introduced into a lower priced category (78 percent cheaper at launch).
- More modern: Reflects 7 years and 2 months of technical progress since the D3X launch.
If the number of relative strengths (bullet points above) is taken as a guide, the K-1 is the clear winner of the contest (17 : 5 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. 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 Nikon D3X and the Pentax K-1 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 D3X and the K-1 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 why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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.||Nikon D3X||..||..||..||86/100||4/5||5/5||Dec 2008||7,999||ebay.com|
|2.||Pentax K-1||5/5||..||..||84/100||5/5||5/5||Feb 2016||1,799||ebay.com|
|3.||Canon 5D Mark IV||4.5/5||+ +||4/5||87/100||4.5/5||4.5/5||Aug 2016||3,499||amazon.com|
|4.||Canon 1Ds Mark III||..||..||..||+ +||4.5/5||..||Aug 2007||7,999||ebay.com|
|5.||Nikon D5||..||..||4/5||89/100||4.5/5||5/5||Jan 2016||6,499||ebay.com|
|6.||Nikon D500||5/5||+ +||4.7/5||91/100||4.5/5||5/5||Jan 2016||1,999||amazon.com|
|7.||Nikon D4S||5/5||..||..||..||4.5/5||4.5/5||Feb 2014||6,499||ebay.com|
|8.||Nikon D750||5/5||+ +||4/5||90/100||4.5/5||4.5/5||Sep 2014||2,299||ebay.com|
|9.||Nikon D610||4/5||+ +||..||87/100||4.5/5||4.5/5||Oct 2013||1,999||amazon.com|
|10.||Nikon D4||..||..||..||..||4.5/5||4.5/5||Jan 2012||5,999||ebay.com|
|11.||Nikon D600||4/5||+ +||..||87/100||5/5||4.5/5||Sep 2012||2,099||ebay.com|
|12.||Nikon D3S||5/5||..||..||89/100||4.5/5||5/5||Oct 2009||5,199||ebay.com|
|13.||Nikon D700||..||89/100||..||+ +||4.5/5||4.5/5||Jul 2008||2,999||ebay.com|
|14.||Nikon D3||..||..||..||+ +||5/5||4.5/5||Aug 2007||4,999||ebay.com|
|15.||Olympus E-M1 II||5/5||+ +||5/5||85/100||4.5/5||4.5/5||Sep 2016||1,999||ebay.com|
|16.||Pentax K-1 II||..||..||4.5/5||79/100||4.5/5||4.5/5||Feb 2018||1,999||amazon.com|
|17.||Sony A99 II||..||..||4.5/5||85/100||4.5/5||4.5/5||Sep 2016||3,199||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? In case you are interested in seeing how other cameras pair up, 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.
Specifications: Nikon D3X vs Pentax K-1
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||Nikon D3X||Pentax K-1|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Pentax K mount lenses|
|Launch Date||December 2008||February 2016|
|Launch Price||USD 7,999||USD 1,799|
|Sensor Specs||Nikon D3X||Pentax K-1|
|Sensor Format||Full Frame Sensor||Full Frame Sensor|
|Sensor Size||35.9 x 24.0 mm||35.9 x 24.0 mm|
|Sensor Area||861.6 mm2||861.6 mm2|
|Sensor Diagonal||43.2 mm||43.2 mm|
|Sensor Resolution||24.4 Megapixels||36.2 Megapixels|
|Image Resolution||6048 x 4032 pixels||7360 x 4912 pixels|
|Pixel Pitch||5.94 μm||4.88 μm|
|Pixel Density||2.83 MP/cm2||4.20 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||100 - 1,600 ISO||100 - 204,800 ISO|
|ISO Boost||50 - 6,400 ISO||no Enhancement|
|Image Processor||EXPEED||PRIME IV|
|DXO Sensor Quality (score)||88||96|
|DXO Color Depth (bits)||24.7||25.4|
|DXO Dynamic Range (EV)||13.7||14.6|
|DXO Low Light (ISO)||1992||3280|
|Screen Specs||Nikon D3X||Pentax K-1|
|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||3.0inch||3.2inch|
|LCD Resolution||922k dots||1037k dots|
|LCD Attachment||Fixed screen||Fully flexible screen|
|Shooting Specs||Nikon D3X||Pentax K-1|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/8000s|
|Continuous Shooting||5 shutter flaps/s||4.4 shutter flaps/s|
|Shutter Life Expectancy||300 000 actuations||300 000 actuations|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|Connectivity Specs||Nikon D3X||Pentax K-1|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Geotagging||no internal GPS||GPS built-in|
|Body Specs||Nikon D3X||Pentax K-1|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||4400 shots per charge||760 shots per charge|
160 x 157 x 88 mm
(6.3 x 6.2 x 3.5 in)
137 x 110 x 86 mm
(5.4 x 4.3 x 3.4 in)
|Camera Weight||1260 g (44.4 oz)||1010 g (35.6 oz)|
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