Nikon D2X vs Pentax 645D
The Nikon D2X and the Pentax 645D are two professional cameras that were revealed to the public, respectively, in September 2004 and March 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D2X) and a medium format (645D) sensor. The Nikon has a resolution of 12.2 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D2X 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.
Body comparison
An illustration of the physical size and weight of the Nikon D2X and the Pentax 645D is provided 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 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 645D is notably smaller (23 percent) than the Nikon D2X. However, the 645D is markedly heavier (18 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 Nikon EN-EL4a battery, while the 645D can take 800 images on a single charge of its Pentax 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.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D2X | 158 mm | 150 mm | 86 mm | 1252 g | 3800 | Y | Sep 2004 | 4,999 | ebay.com | |
2. | Pentax 645D | 156 mm | 117 mm | 119 mm | 1480 g | 800 | Y | Mar 2010 | 9,995 | ebay.com | |
3. | Canon 1D Mark IV | 156 mm | 157 mm | 80 mm | 1230 g | 1500 | Y | Oct 2009 | 4,999 | ebay.com | |
4. | Canon 1D X | 158 mm | 168 mm | 83 mm | 1551 g | 1120 | Y | Oct 2011 | 6,799 | ebay.com | |
5. | Leica S Typ 006 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2012 | 21,950 | ebay.com | |
6. | Nikon D1 | 157 mm | 153 mm | 85 mm | 1100 g | .. | Y | Jun 1999 | 5,499 | ebay.com | |
7. | Nikon D1H | 157 mm | 153 mm | 85 mm | 1100 g | 1200 | Y | Feb 2001 | 4,499 | ebay.com | |
8. | Nikon D1X | 157 mm | 153 mm | 85 mm | 1100 g | 1200 | Y | Feb 2001 | 5,999 | ebay.com | |
9. | Nikon D2H | 158 mm | 150 mm | 86 mm | 1070 g | 2900 | Y | Jul 2003 | 3,499 | ebay.com | |
10. | Nikon D2Xs | 158 mm | 150 mm | 86 mm | 1252 g | 3800 | Y | Jun 2006 | 4,699 | ebay.com | |
11. | Nikon D3 | 160 mm | 157 mm | 88 mm | 1300 g | 4300 | Y | Aug 2007 | 4,999 | ebay.com | |
12. | Nikon D3S | 160 mm | 157 mm | 88 mm | 1240 g | 4200 | Y | Oct 2009 | 5,199 | ebay.com | |
13. | Nikon D200 | 147 mm | 113 mm | 74 mm | 920 g | 400 | Y | Nov 2005 | 1,699 | ebay.com | |
14. | Nikon D300 | 147 mm | 114 mm | 74 mm | 925 g | 1000 | Y | Aug 2007 | 1,799 | ebay.com | |
15. | Nikon D300S | 147 mm | 115 mm | 81 mm | 938 g | 950 | Y | Jul 2009 | 1,799 | ebay.com | |
16. | Pentax 645Z | 156 mm | 117 mm | 123 mm | 1550 g | 650 | Y | Apr 2014 | 8,499 | ebay.com | |
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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D2X was launched at a markedly lower price (by 50 percent) than the 645D, 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.
Sensor comparison
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. 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 Nikon D2X features an APS-C sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 290 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 0.79. The sensor in the D2X 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 D2X (12.2MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 5.52μm for the D2X) due to its larger sensor. Moreover, the 645D is a much more recent model (by 5 years and 5 months) than the D2X, and its sensor will 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 inches or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inches or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inches or 61.5 x 46.1 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 645D are ISO 100 to ISO 1600 (no boost).
In terms of underlying technology, the D2X is build around a CMOS sensor, while the 645D uses a CCD imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the 645D offers substantially better image quality than the D2X (overall score 23 points higher). The advantage is based on 2.5 bits higher color depth, 1.7 EV in additional dynamic range, and 1.4 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D2X | APS-C | 12.2 | 4288 | 2848 | none | 22.1 | 10.9 | 476 | 59 | |
2. | Pentax 645D | Medium Format | 39.5 | 7264 | 5440 | none | 24.6 | 12.6 | 1262 | 82 | |
3. | Canon 1D Mark IV | APS-H | 16.0 | 4896 | 3264 | 1080/30p | 22.8 | 12.0 | 1320 | 74 | |
4. | Canon 1D X | Full Frame | 17.9 | 5184 | 3456 | 1080/30p | 23.8 | 11.8 | 2786 | 82 | |
5. | Leica S Typ 006 | Medium Format | 37.5 | 7500 | 5000 | none | 23.9 | 12.2 | 824 | 76 | |
6. | Nikon D1 | APS-C | 2.6 | 2000 | 1312 | none | .. | .. | .. | .. | |
7. | Nikon D1H | APS-C | 2.6 | 2000 | 1312 | none | .. | .. | .. | .. | |
8. | Nikon D1X | APS-C | 5.9 | 3008 | 1960 | none | .. | .. | .. | .. | |
9. | Nikon D2H | APS-C | 4.0 | 2464 | 1632 | none | 18.9 | 10.0 | 352 | 40 | |
10. | Nikon D2Xs | APS-C | 12.2 | 4288 | 2848 | none | 22.2 | 10.9 | 489 | 59 | |
11. | Nikon D3 | Full Frame | 12.1 | 4256 | 2832 | none | 23.5 | 12.2 | 2290 | 81 | |
12. | Nikon D3S | Full Frame | 12.1 | 4256 | 2832 | 720/24p | 23.5 | 12.0 | 3253 | 82 | |
13. | Nikon D200 | APS-C | 10.0 | 3872 | 2592 | none | 22.3 | 11.5 | 583 | 64 | |
14. | Nikon D300 | APS-C | 12.2 | 4288 | 2848 | none | 22.1 | 12.0 | 679 | 67 | |
15. | Nikon D300S | APS-C | 12.2 | 4288 | 2848 | 720/24p | 22.5 | 12.2 | 787 | 70 | |
16. | Pentax 645Z | Medium Format | 51.1 | 8256 | 6192 | 1080/60i | 26.0 | 14.7 | 4505 | 101 |
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. The D2X 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 D2X 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 0.57x), 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 Nikon D2X and Pentax 645D in connection with corresponding information for a sample of similar cameras.
Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D2X | optical | Y | 2.5 / 235 | fixed | n | 1/8000s | 5.0/s | n | n | |
2. | Pentax 645D | optical | Y | 3.0 / 921 | fixed | n | 1/4000s | 1.1/s | n | n | |
3. | Canon 1D Mark IV | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 10.0/s | n | n | |
4. | Canon 1D X | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 14.0/s | n | n | |
5. | Leica S Typ 006 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 1.5/s | n | n | |
6. | Nikon D1 | optical | Y | 2.0 / 120 | fixed | n | 1/16000s | 4.5/s | n | n | |
7. | Nikon D1H | optical | Y | 2.0 / 120 | fixed | n | 1/16000s | 5.0/s | n | n | |
8. | Nikon D1X | optical | Y | 2.0 / 120 | fixed | n | 1/16000s | 3.0/s | n | n | |
9. | Nikon D2H | optical | Y | 2.5 / 211 | fixed | n | 1/8000s | 8.0/s | n | n | |
10. | Nikon D2Xs | optical | Y | 2.5 / 230 | fixed | n | 1/8000s | 5.0/s | n | n | |
11. | Nikon D3 | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 11.0/s | n | n | |
12. | Nikon D3S | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
13. | Nikon D200 | optical | Y | 2.5 / 230 | fixed | n | 1/8000s | 5.0/s | Y | n | |
14. | Nikon D300 | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 6.0/s | Y | n | |
15. | Nikon D300S | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 7.0/s | Y | n | |
16. | Pentax 645Z | optical | Y | 3.2 / 1037 | tilting | n | 1/4000s | 3.0/s | n | n | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
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 D2X writes its imaging data to Compact Flash cards, while the 645D uses SDXC cards. The 645D features dual card slots, which can be very useful in case a memory card fails. In contrast, the D2X only has one slot.
Connectivity comparison
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 645D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D2X | Y | - / - | - | - | - | 2.0 | - | - | - | |
2. | Pentax 645D | Y | stereo / - | - | - | - | 2.0 | - | - | - | |
3. | Canon 1D Mark IV | Y | stereo / - | Y | - | mini | 2.0 | - | - | - | |
4. | Canon 1D X | Y | mono / - | Y | - | mini | 2.0 | - | - | - | |
5. | Leica S Typ 006 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
6. | Nikon D1 | Y | - / - | - | - | - | FW | - | - | - | |
7. | Nikon D1H | Y | - / - | - | - | - | FW | - | - | - | |
8. | Nikon D1X | Y | - / - | - | - | - | FW | - | - | - | |
9. | Nikon D2H | Y | - / - | - | - | - | 2.0 | - | - | - | |
10. | Nikon D2Xs | Y | - / - | - | - | - | 2.0 | - | - | - | |
11. | Nikon D3 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
12. | Nikon D3S | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
13. | Nikon D200 | Y | - / - | - | - | - | 2.0 | - | - | - | |
14. | Nikon D300 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
15. | Nikon D300S | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
16. | Pentax 645Z | Y | stereo / mono | Y | - | mini | 3.0 | - | - | - |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the D2X and the 645D have been discontinued, but can regularly be found used on ebay. The D2X was replaced by the Nikon D2Xs, while the 645D was followed by the Pentax 645Z. Further information on the features and operation of the D2X and 645D can be found, respectively, in the Nikon D2X Manual (free pdf) or the online Pentax 645D Manual.
Review summary
So how do things add up? Is there a clear favorite between the Nikon D2X and the Pentax 645D? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Nikon D2X:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- 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 (5 vs 1.1 flaps/sec) to capture the decisive moment.
- Less heavy: Is lighter (by 228g or 15 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 (3800 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 available for much longer (launched in September 2004).
Reasons to prefer the Pentax 645D:
- More detail: Has more megapixels (39.5 vs 12.2MP), which boosts linear resolution by 76%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (23 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.5 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1.7 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.4 stops ISO advantage).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x 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).
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (156x117mm vs 158x150mm) and will fit more readily into a bag.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More modern: Reflects 5 years and 5 months of technical progress since the D2X launch.
If the count of relative strengths (bullet points above) is taken as a measure, the 645D is the clear winner of the contest (13 : 9 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 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the D2X 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.
Expert reviews
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 (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.
Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D2X | .. | .. | .. | + + | .. | .. | Sep 2004 | 4,999 | ebay.com | |
2. | Pentax 645D | 5/5 | .. | .. | .. | .. | .. | Mar 2010 | 9,995 | ebay.com | |
3. | Canon 1D Mark IV | 5/5 | .. | .. | 89/100 | .. | .. | Oct 2009 | 4,999 | ebay.com | |
4. | Canon 1D X | 5/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Oct 2011 | 6,799 | ebay.com | |
5. | Leica S Typ 006 | .. | .. | .. | .. | .. | .. | Sep 2012 | 21,950 | ebay.com | |
6. | Nikon D1 | .. | .. | .. | + + | .. | .. | Jun 1999 | 5,499 | ebay.com | |
7. | Nikon D1H | .. | .. | .. | + + | .. | .. | Feb 2001 | 4,499 | ebay.com | |
8. | Nikon D1X | .. | .. | .. | + + | .. | .. | Feb 2001 | 5,999 | ebay.com | |
9. | Nikon D2H | .. | .. | .. | + + | .. | .. | Jul 2003 | 3,499 | ebay.com | |
10. | Nikon D2Xs | .. | .. | .. | .. | .. | .. | Jun 2006 | 4,699 | ebay.com | |
11. | Nikon D3 | .. | .. | .. | + + | 5/5 | 4.5/5 | Aug 2007 | 4,999 | ebay.com | |
12. | Nikon D3S | 5/5 | .. | .. | 89/100 | 4.5/5 | 5/5 | Oct 2009 | 5,199 | ebay.com | |
13. | Nikon D200 | .. | + + | .. | + + | o | .. | Nov 2005 | 1,699 | ebay.com | |
14. | Nikon D300 | .. | + + | .. | + + | 5/5 | 4.5/5 | Aug 2007 | 1,799 | ebay.com | |
15. | Nikon D300S | 5/5 | + + | .. | 82/100 | 4/5 | 4.5/5 | Jul 2009 | 1,799 | ebay.com | |
16. | Pentax 645Z | 5/5 | .. | 3.5/5 | .. | 4.5/5 | 5/5 | Apr 2014 | 8,499 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 1300D vs Pentax 645D
- Canon G5 X Mark II vs Nikon D2X
- Canon M vs Pentax 645D
- Canon T6 vs Pentax 645D
- Fujifilm X-E2S vs Nikon D2X
- Leica Digilux 3 vs Nikon D2X
- Leica S-E Typ 006 vs Nikon D2X
- Leica T vs Pentax 645D
- Nikon D2X vs Panasonic FT7
- Nikon D2X vs Sony A9
- Pentax 645D vs Sony RX0 II
- Pentax 645D vs Sony RX10 IV
Specifications: Nikon D2X 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 | Nikon D2X | Pentax 645D |
---|---|---|
Camera Type | Digital single lens reflex | Digital single lens reflex |
Camera Lens | Nikon F mount lenses | Pentax 645 mount lenses |
Launch Date | September 2004 | March 2010 |
Launch Price | USD 4,999 | USD 9,995 |
Sensor Specs | Nikon D2X | Pentax 645D |
Sensor Technology | CMOS | CCD |
Sensor Format | APS-C Sensor | Medium Format Sensor |
Sensor Size | 23.7 x 15.7 mm | 44.0 x 33.0 mm |
Sensor Area | 372.09 mm2 | 1452 mm2 |
Sensor Diagonal | 28.4 mm | 55 mm |
Crop Factor | 1.5x | 0.79x |
Sensor Resolution | 12.2 Megapixels | 39.5 Megapixels |
Image Resolution | 4288 x 2848 pixels | 7264 x 5440 pixels |
Pixel Pitch | 5.52 μm | 6.06 μm |
Pixel Density | 3.28 MP/cm2 | 2.72 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | no Video | no Video |
ISO Setting | 100 - 800 ISO | 100 - 1,600 ISO |
ISO Boost | 100 - 3,200 ISO | no Enhancement |
DXO Sensor Quality (score) | 59 | 82 |
DXO Color Depth (bits) | 22.1 | 24.6 |
DXO Dynamic Range (EV) | 10.9 | 12.6 |
DXO Low Light (ISO) | 476 | 1262 |
Screen Specs | Nikon D2X | Pentax 645D |
Viewfinder Type | Optical viewfinder | Optical viewfinder |
Viewfinder Field of View | 100% | 98% |
Viewfinder Magnification | 0.57x | 0.78x |
Top-Level Screen | Control Panel | Control Panel |
Rear LCD Size | 2.5inch | 3.0inch |
LCD Resolution | 235k dots | 921k dots |
LCD Attachment | Fixed screen | Fixed screen |
Shooting Specs | Nikon D2X | Pentax 645D |
Focus System | Phase-detect AF | Phase-detect AF |
Continuous Shooting | 5 shutter flaps/s | 1.1 shutter flaps/s |
Shutter Life Expectancy | 150 000 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 cards | SDXC cards |
Single or Dual Card Slots | Single card slot | Dual card slots |
Connectivity Specs | Nikon D2X | Pentax 645D |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | PC Sync socket |
USB Connector | USB 2.0 | USB 2.0 |
HDMI Port | no HDMI | no HDMI |
Wifi Support | no Wifi | no Wifi |
Body Specs | Nikon D2X | Pentax 645D |
Environmental Sealing | Weathersealed body | Weathersealed body |
Battery Type | Nikon EN-EL4a | Pentax D-LI90 |
Battery Life (CIPA) | 3800 shots per charge | 800 shots per charge |
Body Dimensions |
158 x 150 x 86 mm (6.2 x 5.9 x 3.4 in) |
156 x 117 x 119 mm (6.1 x 4.6 x 4.7 in) |
Camera Weight | 1252 g (44.2 oz) | 1480 g (52.2 oz) |
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