Nikon D2X vs Pentax K-5
The Nikon D2X and the Pentax K-5 are two digital cameras that were revealed to the public, respectively, in September 2004 and September 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Nikon has a resolution of 12.2 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D2X 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 physical size and weight of the Nikon D2X and the Pentax K-5 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 K-5 is considerably smaller (46 percent) than the Nikon D2X. Moreover, the K-5 is substantially lighter (39 percent) than the D2X. 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 D2X gets 3800 shots out of its EN-EL4a 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 D2X 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, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Nikon D2X||158 mm||150 mm||86 mm||1252 g||3800||Y||Sep 2004||4,999|
|2.||Pentax K-5||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2010||1,099|
|3.||Canon 1D Mark III||156 mm||157 mm||80 mm||1155 g||2200||Y||Feb 2007||4,499|
|4.||Nikon D3S||160 mm||157 mm||88 mm||1240 g||4200||Y||Oct 2009||5,199|
|5.||Nikon D300S||147 mm||115 mm||81 mm||938 g||950||Y||Jul 2009||1,799|
|6.||Nikon D3||160 mm||157 mm||88 mm||1300 g||4300||Y||Aug 2007||4,999|
|7.||Nikon D300||147 mm||114 mm||74 mm||925 g||1000||Y||Aug 2007||1,799|
|8.||Nikon D2Xs||158 mm||150 mm||86 mm||1252 g||3800||Y||Jun 2006||4,699|
|9.||Nikon D200||147 mm||113 mm||74 mm||920 g||400||Y||Nov 2005||1,699|
|10.||Nikon D2H||158 mm||150 mm||86 mm||1070 g||2900||Y||Jul 2003||3,499|
|11.||Nikon D1H||157 mm||153 mm||85 mm||1100 g||1200||Y||Feb 2001||4,499|
|12.||Nikon D1X||157 mm||153 mm||85 mm||1100 g||1200||Y||Feb 2001||5,999|
|13.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099|
|14.||Pentax K-50||130 mm||97 mm||71 mm||650 g||410||Y||Jun 2013||599|
|15.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|16.||Pentax K-30||130 mm||97 mm||71 mm||650 g||410||Y||May 2012||849|
|17.||Pentax K-5 II||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2012||1,099|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. 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 K-5 was launched at a markedly lower price (by 78 percent) than the D2X, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The size of the sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. 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-5 offers a higher resolution of 16.1 megapixels, compared with 12.2 MP of the D2X. This megapixels advantage translates into a 15 percent gain in linear resolution. On the other hand, these sensor specs imply that the K-5 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.81μm versus 5.52μm for the D2X). However, it should be noted that the K-5 is much more recent (by 6 years) than the D2X, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.
The resolution advantage of the Pentax K-5 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-5 for good quality output (200 dots per inch) amounts to 24.6 x 16.3 inches or 62.6 x 41.5 cm, for very good quality (250 dpi) 19.7 x 13.1 inches or 50.1 x 33.2 cm, and for excellent quality (300 dpi) 16.4 x 10.9 inches or 41.7 x 27.6 cm. The corresponding values for the Nikon D2X are 21.4 x 14.2 inches or 54.5 x 36.2 cm for good quality, 17.2 x 11.4 inches or 43.6 x 28.9 cm for very good quality, and 14.3 x 9.5 inches or 36.3 x 24.1 cm for excellent quality prints.
The Nikon D2X has a native sensitivity range from ISO 100 to ISO 800, which can be extended to ISO 100-3200. 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.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 D2X (overall score 23 points higher). The advantage is based on 1.6 bits higher color depth, 3.2 EV in additional dynamic range, and 1.3 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|3.||Canon 1D Mark III||APS-H||10.1||3888||2592||none||22.7||11.7||1078||71|
|4.||Nikon D3S||Full Frame||12.1||4256||2832||720/24p||23.5||12.0||3253||82|
|6.||Nikon D3||Full Frame||12.1||4256||2832||none||23.5||12.2||2290||81|
|13.||Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|17.||Pentax K-5 II||APS-C||16.1||4928||3264||1080/25p||23.8||14.1||1235||82|
Many modern cameras are not only capable of taking still images, but can also record movies. The K-5 indeed provides for movie recording, while the D2X does not. The highest resolution format that the K-5 can use is 1080/25p.
Beyond body and sensor, cameras can and do differ across a range of features. The D2X 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 K-5 has a higher magnification than the one of the D2X (0.61x vs 0.57x), 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 Nikon D2X, the Pentax K-5, and comparable cameras.
|1.||Nikon D2X||optical||Y||2.5 / 235||fixed||n||1/8000s||5.0/s||n||n|
|2.||Pentax K-5||optical||Y||3.0 / 921||fixed||n||1/8000s||7.0/s||Y||Y|
|3.||Canon 1D Mark III||optical||Y||3.0 / 230||fixed||n||1/8000s||10.0/s||n||n|
|4.||Nikon D3S||optical||Y||3.0 / 921||fixed||n||1/8000s||11.0/s||n||n|
|5.||Nikon D300S||optical||Y||3.0 / 920||fixed||n||1/8000s||7.0/s||Y||n|
|6.||Nikon D3||optical||Y||3.0 / 922||fixed||n||1/8000s||11.0/s||n||n|
|7.||Nikon D300||optical||Y||3.0 / 922||fixed||n||1/8000s||6.0/s||Y||n|
|8.||Nikon D2Xs||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0/s||n||n|
|9.||Nikon D200||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0/s||Y||n|
|10.||Nikon D2H||optical||Y||2.5 / 211||fixed||n||1/8000s||8.0/s||n||n|
|11.||Nikon D1H||optical||Y||2.0 / 120||fixed||n||1/16000s||5.0/s||n||n|
|12.||Nikon D1X||optical||Y||2.0 / 120||fixed||n||1/16000s||3.0/s||n||n|
|13.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||n||Y|
|14.||Pentax K-50||optical||n||3.0 / 921||fixed||n||1/6000s||6.0/s||Y||Y|
|15.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||Y||Y|
|16.||Pentax K-30||optical||n||3.0 / 921||fixed||n||1/6000s||6.0/s||Y||Y|
|17.||Pentax K-5 II||optical||Y||3.0 / 921||fixed||n||1/8000s||7.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the K-5 and the D2X is in-body image stabilization (IBIS). The K-5 reduces the risk of handshake-induced blur with all attached lenses, while the D2X offers no blur reduction with lenses that themselves do not provide optical image stabilization.
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 D2X writes its imaging data to Compact Flash 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 Nikon D2X and Pentax K-5 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon D2X||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Pentax K-5||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|3.||Canon 1D Mark III||Y||- / -||-||-||-||2.0||-||-||-|
|4.||Nikon D3S||Y||stereo / -||-||-||mini||2.0||-||-||-|
|5.||Nikon D300S||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|6.||Nikon D3||Y||- / -||-||-||mini||2.0||-||-||-|
|7.||Nikon D300||Y||- / -||-||-||mini||2.0||-||-||-|
|8.||Nikon D2Xs||Y||- / -||-||-||-||2.0||-||-||-|
|9.||Nikon D200||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Nikon D2H||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Nikon D1H||Y||- / -||-||-||-||FW||-||-||-|
|12.||Nikon D1X||Y||- / -||-||-||-||FW||-||-||-|
|13.||Pentax K-3 II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|14.||Pentax K-50||Y||mono / mono||-||-||micro||2.0||-||-||-|
|15.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|16.||Pentax K-30||Y||mono / mono||-||-||-||2.0||-||-||-|
|17.||Pentax K-5 II||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the D2X and the K-5 have been discontinued, but can regularly be found used on eBay. The D2X was replaced by the Nikon D2Xs, 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 Nikon and Pentax websites.
So what conclusions can be drawn? Which of the two cameras – the Nikon D2X or the Pentax K-5 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Nikon D2X:
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (3800 versus 740) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in September 2004).
Arguments in favor of the Pentax K-5:
- More detail: Has more megapixels (16.1 vs 12.2MP), which boosts linear resolution by 15%.
- Better image quality: Scores substantially higher (23 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 (3.2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.3 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 1080/25p video.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.61x vs 0.57x).
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (921k vs 235k 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 158x150mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 492g or 39 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 (78 percent cheaper at launch).
- More modern: Reflects 6 years of technical progress since the D2X launch.
If the number of relative strengths (bullet points above) is taken as a guide, the K-5 is the clear winner of the contest (17 : 3 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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 D2X 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 says little about, for example, the shooting experience and imaging performance of the D2X and the K-5 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (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 D2X||..||..||..||+ +||..||..||Sep 2004||4,999|
|2.||Pentax K-5||4/5||..||..||83/100||5/5||4.5/5||Sep 2010||1,099|
|3.||Canon 1D Mark III||..||..||..||..||..||..||Feb 2007||4,499|
|4.||Nikon D3S||5/5||..||..||89/100||4.5/5||5/5||Oct 2009||5,199|
|5.||Nikon D300S||5/5||+ +||..||82/100||4/5||4.5/5||Jul 2009||1,799|
|6.||Nikon D3||..||..||..||+ +||5/5||4.5/5||Aug 2007||4,999|
|7.||Nikon D300||..||+ +||..||+ +||5/5||4.5/5||Aug 2007||1,799|
|8.||Nikon D2Xs||..||..||..||..||..||..||Jun 2006||4,699|
|9.||Nikon D200||..||+ +||..||+ +||o||..||Nov 2005||1,699|
|10.||Nikon D2H||..||..||..||+ +||..||..||Jul 2003||3,499|
|11.||Nikon D1H||..||..||..||+ +||..||..||Feb 2001||4,499|
|12.||Nikon D1X||..||..||..||+ +||..||..||Feb 2001||5,999|
|13.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099|
|14.||Pentax K-50||5/5||..||..||..||5/5||4.5/5||Jun 2013||599|
|15.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||1,299|
|16.||Pentax K-30||4/5||..||..||78/100||4.5/5||4.5/5||May 2012||849|
|17.||Pentax K-5 II||5/5||..||..||80/100||5/5||4.5/5||Sep 2012||1,099|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods 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 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 D2X 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||Nikon D2X||Pentax K-5|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Pentax K mount lenses|
|Launch Date||September 2004||September 2010|
|Launch Price||USD 4,999||USD 1,099|
|Sensor Specs||Nikon D2X||Pentax K-5|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.7 x 15.7 mm||23.7 x 15.7 mm|
|Sensor Area||372.09 mm2||372.09 mm2|
|Sensor Diagonal||28.4 mm||28.4 mm|
|Sensor Resolution||12.2 Megapixels||16.1 Megapixels|
|Image Resolution||4288 x 2848 pixels||4928 x 3264 pixels|
|Pixel Pitch||5.52 μm||4.81 μm|
|Pixel Density||3.28 MP/cm2||4.32 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/25p Video|
|ISO Setting||100 - 800 ISO||100 - 12,800 ISO|
|ISO Boost||100 - 3,200 ISO||80 - 51,200 ISO|
|DXO Sensor Quality (score)||59||82|
|DXO Color Depth (bits)||22.1||23.7|
|DXO Dynamic Range (EV)||10.9||14.1|
|DXO Low Light (ISO)||476||1162|
|Screen Specs||Nikon D2X||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|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||235k dots||921k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Nikon D2X||Pentax K-5|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||5 shutter flaps/s||7 shutter flaps/s|
|Shutter Life Expectancy||150 000 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||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Nikon D2X||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||Nikon D2X||Pentax K-5|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||3800 shots per charge||740 shots per charge|
158 x 150 x 86 mm
(6.2 x 5.9 x 3.4 in)
131 x 97 x 73 mm
(5.2 x 3.8 x 2.9 in)
|Camera Weight||1252 g (44.2 oz)||760 g (26.8 oz)|
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