Nikon D3S vs Pentax 645D
The Nikon D3S and the Pentax 645D are two professional cameras that were revealed to the public, respectively, in October 2009 and March 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (D3S) and a medium format (645D) sensor. The Nikon has a resolution of 12.1 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 D3S 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
The side-by-side display below illustrates the physical size and weight of the Nikon D3S and the Pentax 645D. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. 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 (27 percent) than the Nikon D3S. However, the 645D is markedly heavier (19 percent) than the D3S. 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 D3S gets 4200 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 D3S has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
# | Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D3S | 160 mm | 157 mm | 88 mm | 1240 g | 4200 | Y | Oct 2009 | 5,199 | ebay.com | |
2. | Pentax 645D | 156 mm | 117 mm | 119 mm | 1480 g | 800 | Y | Mar 2010 | 9,995 | ebay.com | |
3. | Canon 1D X | 158 mm | 168 mm | 83 mm | 1551 g | 1120 | Y | Oct 2011 | 6,799 | ebay.com | |
4. | Canon 1D Mark IV | 156 mm | 157 mm | 80 mm | 1230 g | 1500 | Y | Oct 2009 | 4,999 | ebay.com | |
5. | Canon 1D Mark III | 156 mm | 157 mm | 80 mm | 1155 g | 2200 | Y | Feb 2007 | 4,499 | ebay.com | |
6. | Leica S Typ 006 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2012 | 21,950 | ebay.com | |
7. | Nikon D5 | 160 mm | 159 mm | 92 mm | 1415 g | 3780 | Y | Jan 2016 | 6,499 | ebay.com | |
8. | Nikon D4S | 160 mm | 157 mm | 91 mm | 1350 g | 3020 | Y | Feb 2014 | 6,499 | ebay.com | |
9. | Nikon D4 | 160 mm | 157 mm | 91 mm | 1340 g | 2600 | Y | Jan 2012 | 5,999 | ebay.com | |
10. | Nikon D300S | 147 mm | 115 mm | 81 mm | 938 g | 950 | Y | Jul 2009 | 1,799 | ebay.com | |
11. | Nikon D3X | 160 mm | 157 mm | 88 mm | 1260 g | 4400 | Y | Dec 2008 | 7,999 | ebay.com | |
12. | Nikon D700 | 147 mm | 123 mm | 77 mm | 1074 g | 1000 | Y | Jul 2008 | 2,999 | ebay.com | |
13. | Nikon D3 | 160 mm | 157 mm | 88 mm | 1300 g | 4300 | Y | Aug 2007 | 4,999 | ebay.com | |
14. | Nikon D2Xs | 158 mm | 150 mm | 86 mm | 1252 g | 3800 | Y | Jun 2006 | 4,699 | ebay.com | |
15. | 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 naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D3S was launched at a markedly lower price (by 48 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.
Sensor comparison
The size of the imaging sensor is a crucial determinant 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Nikon D3S features a full frame sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 69 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 0.79. The sensor in the D3S 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 D3S (12.1MP), but the 645D has smaller individual pixels (pixel pitch of 6.06μm versus 8.43μm for the D3S). Yet, the 645D is a somewhat more recent model (by 4 months) than the D3S, and its sensor might 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 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 D3S are 21.3 x 14.2 inches or 54.1 x 36 cm for good quality, 17 x 11.3 inches or 43.2 x 28.8 cm for very good quality, and 14.2 x 9.4 inches or 36 x 24 cm for excellent quality prints.
The Nikon D3S has a native sensitivity range from ISO 200 to ISO 12800, which can be extended to ISO 100-102400. The corresponding ISO settings for the Pentax 645D are ISO 100 to ISO 1600 (no boost).
In terms of underlying technology, the D3S 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.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. 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 D3S | Full Frame | 12.1 | 4256 | 2832 | 720/24p | 23.5 | 12.0 | 3253 | 82 | |
2. | Pentax 645D | Medium Format | 39.5 | 7264 | 5440 | none | 24.6 | 12.6 | 1262 | 82 | |
3. | Canon 1D X | Full Frame | 17.9 | 5184 | 3456 | 1080/30p | 23.8 | 11.8 | 2786 | 82 | |
4. | Canon 1D Mark IV | APS-H | 16.0 | 4896 | 3264 | 1080/30p | 22.8 | 12.0 | 1320 | 74 | |
5. | Canon 1D Mark III | APS-H | 10.1 | 3888 | 2592 | none | 22.7 | 11.7 | 1078 | 71 | |
6. | Leica S Typ 006 | Medium Format | 37.5 | 7500 | 5000 | none | 23.9 | 12.2 | 824 | 76 | |
7. | Nikon D5 | Full Frame | 20.7 | 5588 | 3712 | 4K/30p | 25.1 | 12.3 | 2343 | 88 | |
8. | Nikon D4S | Full Frame | 16.2 | 4928 | 3280 | 1080/60p | 24.4 | 13.3 | 3074 | 89 | |
9. | Nikon D4 | Full Frame | 16.2 | 4928 | 3280 | 1080/30p | 24.7 | 13.1 | 2965 | 89 | |
10. | Nikon D300S | APS-C | 12.2 | 4288 | 2848 | 720/24p | 22.5 | 12.2 | 787 | 70 | |
11. | Nikon D3X | Full Frame | 24.4 | 6048 | 4032 | none | 24.7 | 13.7 | 1992 | 88 | |
12. | Nikon D700 | Full Frame | 12.1 | 4256 | 2832 | none | 23.5 | 12.2 | 2303 | 80 | |
13. | Nikon D3 | Full Frame | 12.1 | 4256 | 2832 | none | 23.5 | 12.2 | 2290 | 81 | |
14. | Nikon D2Xs | APS-C | 12.2 | 4288 | 2848 | none | 22.2 | 10.9 | 489 | 59 | |
15. | Pentax 645Z | Medium Format | 51.1 | 8256 | 6192 | 1080/60i | 26.0 | 14.7 | 4505 | 101 |
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The D3S indeed provides movie recording capabilities, while the 645D does not. The highest resolution format that the D3S can use is 720/24p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. The D3S 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 D3S 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 0.70x), 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 D3S 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 D3S | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
2. | Pentax 645D | optical | Y | 3.0 / 921 | fixed | n | 1/4000s | 1.1/s | n | n | |
3. | Canon 1D X | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 14.0/s | n | n | |
4. | Canon 1D Mark IV | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 10.0/s | n | n | |
5. | Canon 1D Mark III | optical | Y | 3.0 / 230 | fixed | n | 1/8000s | 10.0/s | n | n | |
6. | Leica S Typ 006 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 1.5/s | n | n | |
7. | Nikon D5 | optical | Y | 3.2 / 2359 | fixed | Y | 1/8000s | 14.0/s | n | n | |
8. | Nikon D4S | optical | Y | 3.2 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
9. | Nikon D4 | optical | Y | 3.2 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
10. | Nikon D300S | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 7.0/s | Y | n | |
11. | Nikon D3X | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 5.0/s | n | n | |
12. | Nikon D700 | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 8.0/s | Y | n | |
13. | Nikon D3 | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 11.0/s | n | n | |
14. | Nikon D2Xs | optical | Y | 2.5 / 230 | fixed | n | 1/8000s | 5.0/s | n | n | |
15. | 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 Nikon D3S and the Pentax 645D 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 D3S writes its imaging data to Compact Flash cards, while the 645D uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.
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 D3S 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 D3S | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
2. | Pentax 645D | Y | stereo / - | - | - | - | 2.0 | - | - | - | |
3. | Canon 1D X | Y | mono / - | Y | - | mini | 2.0 | - | - | - | |
4. | Canon 1D Mark IV | Y | stereo / - | Y | - | mini | 2.0 | - | - | - | |
5. | Canon 1D Mark III | Y | - / - | - | - | - | 2.0 | - | - | - | |
6. | Leica S Typ 006 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
7. | Nikon D5 | Y | stereo / mono | Y | Y | mini | 3.0 | - | - | - | |
8. | Nikon D4S | Y | mono / mono | Y | Y | mini | 2.0 | - | - | - | |
9. | Nikon D4 | Y | mono / mono | Y | Y | micro | 2.0 | - | - | - | |
10. | Nikon D300S | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
11. | Nikon D3X | Y | - / - | - | - | mini | 2.0 | - | - | - | |
12. | Nikon D700 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
13. | Nikon D3 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
14. | Nikon D2Xs | Y | - / - | - | - | - | 2.0 | - | - | - | |
15. | 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 D3S and the 645D have been discontinued, but can regularly be found used on ebay. The D3S was replaced by the Nikon D4, while the 645D was followed by the Pentax 645Z. Further information on the features and operation of the D3S and 645D can be found, respectively, in the Nikon D3S Manual (free pdf) or the online Pentax 645D Manual.
Review summary
So what conclusions can be drawn? Which of the two cameras – the Nikon D3S or the Pentax 645D – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Nikon D3S:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better low-light sensitivity: Requires less light for good images (1.4 stops ISO advantage).
- Broader imaging potential: Can record not only still images but also 720/24p movies.
- More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (11 vs 1.1 flaps/sec) to capture the decisive moment.
- Less heavy: Is lighter (by 240g or 16 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 (4200 versus 800) on a single battery charge.
- More affordable: Was introduced into a lower priced category (48 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in October 2009).
Reasons to prefer the Pentax 645D:
- More detail: Has more megapixels (39.5 vs 12.1MP), which boosts linear resolution by 78%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Richer colors: Generates noticeably more natural colors (1.1 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (0.6 EV of extra DR).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.70x).
- More compact: Is smaller (156x117mm vs 160x157mm) and will fit more readily into a bag.
- More modern: Was introduced somewhat (4 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the D3S is the clear winner of the match-up (11 : 7 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.
How about other alternatives? Do the specifications of the Nikon D3S and the Pentax 645D place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the D3S and the 645D 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.
Expert reviews
This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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 D3S | 5/5 | .. | .. | 89/100 | 4.5/5 | 5/5 | Oct 2009 | 5,199 | ebay.com | |
2. | Pentax 645D | 5/5 | .. | .. | .. | .. | .. | Mar 2010 | 9,995 | ebay.com | |
3. | Canon 1D X | 5/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Oct 2011 | 6,799 | ebay.com | |
4. | Canon 1D Mark IV | 5/5 | .. | .. | 89/100 | .. | .. | Oct 2009 | 4,999 | ebay.com | |
5. | Canon 1D Mark III | .. | .. | .. | .. | .. | .. | Feb 2007 | 4,499 | ebay.com | |
6. | Leica S Typ 006 | .. | .. | .. | .. | .. | .. | Sep 2012 | 21,950 | ebay.com | |
7. | Nikon D5 | .. | .. | 4/5 | 89/100 | 4.5/5 | 5/5 | Jan 2016 | 6,499 | ebay.com | |
8. | Nikon D4S | 5/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Feb 2014 | 6,499 | ebay.com | |
9. | Nikon D4 | .. | .. | .. | .. | 4.5/5 | 4.5/5 | Jan 2012 | 5,999 | ebay.com | |
10. | Nikon D300S | 5/5 | + + | .. | 82/100 | 4/5 | 4.5/5 | Jul 2009 | 1,799 | ebay.com | |
11. | Nikon D3X | .. | .. | .. | 86/100 | 4/5 | 5/5 | Dec 2008 | 7,999 | ebay.com | |
12. | Nikon D700 | .. | 89/100 | .. | + + | 4.5/5 | 4.5/5 | Jul 2008 | 2,999 | ebay.com | |
13. | Nikon D3 | .. | .. | .. | + + | 5/5 | 4.5/5 | Aug 2007 | 4,999 | ebay.com | |
14. | Nikon D2Xs | .. | .. | .. | .. | .. | .. | Jun 2006 | 4,699 | ebay.com | |
15. | 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. |
Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 70D vs Pentax 645D
- Canon SX720 vs Nikon D3S
- Fujifilm X-E2S vs Nikon D3S
- Leica V-LUX 1 vs Nikon D3S
- Nikon D3S vs Nikon P900
- Nikon D3S vs Panasonic LF1
- Nikon D3S vs Panasonic ZS70
- Olympus E-300 vs Pentax 645D
- Olympus TG-5 vs Pentax 645D
- Pentax 645D vs Pentax KP
- Pentax 645D vs Sony A7C II
- Pentax 645D vs Sony A7R II
Specifications: Nikon D3S 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 D3S | Pentax 645D |
---|---|---|
Camera Type | Digital single lens reflex | Digital single lens reflex |
Camera Lens | Nikon F mount lenses | Pentax 645 mount lenses |
Launch Date | October 2009 | March 2010 |
Launch Price | USD 5,199 | USD 9,995 |
Sensor Specs | Nikon D3S | Pentax 645D |
Sensor Technology | CMOS | CCD |
Sensor Format | Full Frame Sensor | Medium Format Sensor |
Sensor Size | 36.0 x 23.9 mm | 44.0 x 33.0 mm |
Sensor Area | 860.4 mm2 | 1452 mm2 |
Sensor Diagonal | 43.2 mm | 55 mm |
Crop Factor | 1.0x | 0.79x |
Sensor Resolution | 12.1 Megapixels | 39.5 Megapixels |
Image Resolution | 4256 x 2832 pixels | 7264 x 5440 pixels |
Pixel Pitch | 8.43 μm | 6.06 μm |
Pixel Density | 1.40 MP/cm2 | 2.72 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | 720/24p Video | no Video |
ISO Setting | 200 - 12,800 ISO | 100 - 1,600 ISO |
ISO Boost | 100 - 102,400 ISO | no Enhancement |
Image Processor | EXPEED | PRIME II |
DXO Sensor Quality (score) | 82 | 82 |
DXO Color Depth (bits) | 23.5 | 24.6 |
DXO Dynamic Range (EV) | 12.0 | 12.6 |
DXO Low Light (ISO) | 3253 | 1262 |
Screen Specs | Nikon D3S | Pentax 645D |
Viewfinder Type | Optical viewfinder | Optical viewfinder |
Viewfinder Field of View | 100% | 98% |
Viewfinder Magnification | 0.70x | 0.78x |
Top-Level Screen | Control Panel | Control Panel |
LCD Framing | Live View | |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 921k dots | 921k dots |
LCD Attachment | Fixed screen | Fixed screen |
Shooting Specs | Nikon D3S | Pentax 645D |
Focus System | Phase-detect AF | Phase-detect AF |
Continuous Shooting | 11 shutter flaps/s | 1.1 shutter flaps/s |
Shutter Life Expectancy | 300 000 actuations | 50 000 actuations |
Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
Fill Flash | no On-Board Flash | no On-Board Flash |
Storage Medium | CF cards | SDXC cards |
Single or Dual Card Slots | Dual card slots | Dual card slots |
Connectivity Specs | Nikon D3S | Pentax 645D |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | PC Sync socket |
USB Connector | USB 2.0 | USB 2.0 |
HDMI Port | mini HDMI | no HDMI |
Wifi Support | no Wifi | no Wifi |
Body Specs | Nikon D3S | Pentax 645D |
Environmental Sealing | Weathersealed body | Weathersealed body |
Battery Type | Nikon EN-EL4a | Pentax D-LI90 |
Battery Life (CIPA) | 4200 shots per charge | 800 shots per charge |
Body Dimensions |
160 x 157 x 88 mm (6.3 x 6.2 x 3.5 in) |
156 x 117 x 119 mm (6.1 x 4.6 x 4.7 in) |
Camera Weight | 1240 g (43.7 oz) | 1480 g (52.2 oz) |
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