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Nikon D2Xs vs Pentax 645Z

The Nikon D2Xs and the Pentax 645Z are two professional cameras that were officially introduced, respectively, in June 2006 and April 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D2Xs) and a medium format (645Z) sensor. The Nikon has a resolution of 12.2 megapixels, whereas the Pentax provides 51.1 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Nikon D2Xs
versus
Pentax 645Z
Nikon D2Xs   Pentax 645Z
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Pentax 645 mount lenses
12.2 MP – APS-C sensor 51.1 MP – Medium Format sensor
no Video 1080/60i Video
ISO 100-800 (800 - 3,200) ISO 100-204,800
Optical viewfinder Optical viewfinder
2.5" LCD – 230k dots 3.2" LCD – 1037k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
5 shutter flaps per second 3 shutter flaps per second
Weathersealed bodyWeathersealed body
3800 shots per battery charge650 shots per battery charge
158 x 150 x 86 mm, 1252 g 156 x 117 x 123 mm, 1550 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D2Xs and the Pentax 645Z? 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.

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Body comparison

An illustration of the physical size and weight of the Nikon D2Xs and the Pentax 645Z 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.

Size Nikon D2Xs vs Pentax 645Z
Compare D2Xs versus 645Z top
Comparison D2Xs or 645Z rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645Z is notably smaller (23 percent) than the Nikon D2Xs. However, the 645Z is markedly heavier (24 percent) than the D2Xs. 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 D2Xs gets 3800 shots out of its EN-EL4a battery, while the 645Z can take 650 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the D2Xs 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. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D2Xs 158 mm 150 mm 86 mm 1252 g 3800 Y Jun 2006 4,699ebay.com
2.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 amazon.com
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
5.
 
Canon 1D Mark III 156 mm 157 mm 80 mm 1155 g 2200 Y Feb 2007 4,499ebay.com
6.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 8,995ebay.com
7.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450ebay.com
8.
 
Nikon D300S 147 mm 115 mm 81 mm 938 g 950 Y Jul 2009 1,799ebay.com
9.
 
Nikon D3 160 mm 157 mm 88 mm 1300 g 4300 Y Aug 2007 4,999ebay.com
10.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
11.
 
Nikon D300 147 mm 114 mm 74 mm 925 g 1000 Y Aug 2007 1,799ebay.com
12.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999ebay.com
13.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699ebay.com
14.
 
Nikon D2X 158 mm 150 mm 86 mm 1252 g 3800 Y Sep 2004 4,999ebay.com
15.
 
Nikon D1H 157 mm 153 mm 85 mm 1100 g 1200 Y Feb 2001 4,499ebay.com
16.
 
Nikon D1 157 mm 153 mm 85 mm 1100 g .. Y Jun 1999 5,499ebay.com
17.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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The price is, of course, an important factor in any camera decision. 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 D2Xs was launched at a markedly lower price (by 45 percent) than the 645Z, 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 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Nikon D2Xs features an APS-C sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 286 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 D2Xs has a native 3:2 aspect ratio, while the one in the 645Z offers a 4:3 aspect.

Nikon D2Xs and Pentax 645Z sensor measures

With 51.1MP, the 645Z offers a higher resolution than the D2Xs (12.2MP), but the 645Z has smaller individual pixels (pixel pitch of 5.30μm versus 5.52μm for the D2Xs). Yet, the 645Z is a much more recent model (by 7 years and 10 months) than the D2Xs, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the 645Z has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax 645Z implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645Z for good quality output (200 dots per inch) amounts to 41.3 x 31 inches or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inches or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inches or 69.9 x 52.4 cm. The corresponding values for the Nikon D2Xs 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 D2Xs has a native sensitivity range from ISO 100 to ISO 800, which can be extended to ISO 800-3200. The corresponding ISO settings for the Pentax 645Z 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.

D2Xs versus 645Z MP

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 645Z offers substantially better image quality than the D2Xs (overall score 42 points higher). The advantage is based on 3.8 bits higher color depth, 3.8 EV in additional dynamic range, and 3.2 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.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D2Xs APS-C 12.2 4288 2848none22.210.948959
2.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Canon 1D Mark III APS-H 10.1 3888 2592none22.711.7107871
6.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
7.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
8.
 
Nikon D300S APS-C 12.2 4288 2848720/24p22.512.278770
9.
 
Nikon D3 Full Frame 12.1 4256 2832none23.512.2229081
10.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
11.
 
Nikon D300 APS-C 12.2 4288 2848none22.112.067967
12.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
13.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
14.
 
Nikon D2X APS-C 12.2 4288 2848none22.110.947659
15.
 
Nikon D1H APS-C 2.6 2000 1312none........
16.
 
Nikon D1 APS-C 2.6 2000 1312none........
17.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
padding

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The 645Z indeed provides for movie recording, while the D2Xs does not. The highest resolution format that the 645Z can use is 1080/60i.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The D2Xs and the 645Z 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 D2Xs offers a wider field of view (100%) than the one in the 645Z (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645Z 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 following table reports on some other key feature differences and similarities of the Nikon D2Xs, the Pentax 645Z, and comparable cameras.

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Core Features
# image 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 D2Xsoptical Y2.5 / 230 fixed n 1/8000s 5.0/s n n
2.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Canon 1D Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 10.0/s n n
6.
 
Hasselblad X1D2360 n3.0 / 920 fixed Y 1/2000s 2.3/s n n
7.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0/s n n
8.
 
Nikon D300Soptical Y3.0 / 920 fixed n 1/8000s 7.0/s Y n
9.
 
Nikon D3optical Y3.0 / 922 fixed n 1/8000s 11.0/s n n
10.
 
Nikon D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Nikon D300optical Y3.0 / 922 fixed n 1/8000s 6.0/s Y n
12.
 
Nikon D80optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
13.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
14.
 
Nikon D2Xoptical Y2.5 / 235 fixed n 1/8000s 5.0/s n n
15.
 
Nikon D1Hoptical Y2.0 / 120 fixed n 1/16000s 5.0/s n n
16.
 
Nikon D1optical Y2.0 / 120 fixed n 1/16000s 4.5/s n n
17.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
padding

The Pentax 645Z 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 D2Xs writes its imaging data to Compact Flash cards, while the 645Z uses SDXC cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the D2Xs only has one slot.

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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 D2Xs and Pentax 645Z and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D2XsY- / ----2.0---
2.
 
Pentax 645ZYstereo / monoY-mini3.0---
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Canon 1D Mark IIIY- / ----2.0---
6.
 
Hasselblad X1DYstereo / monoYYmini3.0Y--
7.
 
Leica SLYstereo / monoYYfull3.0Y--
8.
 
Nikon D300SYstereo / monoY-mini2.0---
9.
 
Nikon D3Y- / ---mini2.0---
10.
 
Nikon D40XY- / ----2.0---
11.
 
Nikon D300Y- / ---mini2.0---
12.
 
Nikon D80Y- / ----2.0---
13.
 
Nikon D200Y- / ----2.0---
14.
 
Nikon D2XY- / ----2.0---
15.
 
Nikon D1HY- / ----FW---
16.
 
Nikon D1Y- / ----FW---
17.
 
Pentax 645DYstereo / ----2.0---
padding

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

The 645Z is a recent model that features in the current product line-up of Pentax. In contrast, the D2Xs has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the D2Xs was succeeded by the Nikon D3X. Further information on the features and operation of the D2Xs and 645Z can be found, respectively, in the Nikon D2Xs Manual (free pdf) or the online Pentax 645Z Manual.

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Review summary

So what conclusions can be drawn? Is there a clear favorite between the Nikon D2Xs and the Pentax 645Z? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Nikon D2Xs:

  • 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 3 flaps/sec) to capture the decisive moment.
  • Less heavy: Is lighter (by 298g or 19 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 650) on a single battery charge.
  • More affordable: Was introduced into a lower priced category (45 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in June 2006).

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Arguments in favor of the Pentax 645Z:

  • More detail: Has more megapixels (51.1 vs 12.2MP), which boosts linear resolution by 100%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (42 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (3.8 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3.8 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (3.2 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.57x).
  • Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • 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.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Reflects 7 years and 10 months of technical progress since the D2Xs launch.

If the count of individual advantages (bullet points above) is taken as a guide, the 645Z is the clear winner of the contest (16 : 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D2Xs 09:16 645Z

How about other alternatives? Do the specifications of the Nikon D2Xs and the Pentax 645Z place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the D2Xs or the 645Z perform in practice. 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.

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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D2Xs............ Jun 2006 4,699ebay.com
2.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 8,499 amazon.com
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699ebay.com
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
5.
 
Canon 1D Mark III............ Feb 2007 4,499ebay.com
6.
 
Hasselblad X1D..o..81/100..4/5 Jun 2016 8,995ebay.com
7.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 7,450ebay.com
8.
 
Nikon D300S5/5+ +..82/1004/54.5/5 Jul 2009 1,799ebay.com
9.
 
Nikon D3......+ +5/54.5/5 Aug 2007 4,999ebay.com
10.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
11.
 
Nikon D300..+ +..+ +5/54.5/5 Aug 2007 1,799ebay.com
12.
 
Nikon D80..+..+ +o4.5/5 Aug 2006 999ebay.com
13.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699ebay.com
14.
 
Nikon D2X......+ +.... Sep 2004 4,999ebay.com
15.
 
Nikon D1H......+ +.... Feb 2001 4,499ebay.com
16.
 
Nikon D1......+ +.... Jun 1999 5,499ebay.com
17.
 
Pentax 645D5/5.......... Mar 2010 9,995ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

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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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Nikon D2Xs vs Pentax 645Z

    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 Specifications
    Camera Model Nikon D2Xs Pentax 645Z
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Pentax 645 mount lenses
    Launch Date June 2006 April 2014
    Launch Price USD 4,699 USD 8,499
    Sensor Specs Nikon D2Xs Pentax 645Z
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Medium Format Sensor
    Sensor Size 23.7 x 15.7 mm 43.8 x 32.8 mm
    Sensor Area 372.09 mm2 1436.64 mm2
    Sensor Diagonal 28.4 mm 54.7 mm
    Crop Factor 1.5x 0.79x
    Sensor Resolution 12.2 Megapixels 51.1 Megapixels
    Image Resolution 4288 x 2848 pixels 8256 x 6192 pixels
    Pixel Pitch 5.52 μm 5.30 μm
    Pixel Density 3.28 MP/cm2 3.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100 - 800 ISO 100 - 204,800 ISO
    ISO Boost 800 - 3,200 ISO no Enhancement
    DXO Sensor Quality (score) 59 101
    DXO Color Depth (bits) 22.2 26.0
    DXO Dynamic Range (EV) 10.9 14.7
    DXO Low Light (ISO) 489 4505
    Screen Specs Nikon D2Xs Pentax 645Z
    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
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.2inch
    LCD Resolution 230k dots 1037k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Nikon D2Xs Pentax 645Z
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 5 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy150 000 actuations100 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer 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 D2Xs Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D2Xs Pentax 645Z
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type EN-EL4a D-LI90
    Battery Life (CIPA)3800 shots per charge650 shots per charge
    Body Dimensions 158 x 150 x 86 mm
    (6.2 x 5.9 x 3.4 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 1252 g (44.2 oz) 1550 g (54.7 oz)
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