Nikon D100 vs Pentax KP
The Nikon D100 and the Pentax KP are two enthusiast cameras that were announced, respectively, in February 2002 and January 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Nikon has a resolution of 6 megapixels, whereas the Pentax provides 24.1 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 D100 and the Pentax KP? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
The side-by-side display below illustrates the physical size and weight of the Nikon D100 and the Pentax KP. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.
The KP can be obtained in two different colors (black, silver), while the D100 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax KP is notably smaller (20 percent) than the Nikon D100. Moreover, the KP is markedly lighter (10 percent) than the D100. It is noteworthy in this context that the KP is splash and dust-proof, while the D100 does not feature any corresponding weather-sealing.
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.
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 D100||144 mm||116 mm||81 mm||780 g||370||n||Feb 2002||1,999|
|2.||Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099|
|3.||Canon 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999|
|4.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|5.||Nikon D300||147 mm||114 mm||74 mm||925 g||1000||Y||Aug 2007||1,799|
|6.||Nikon D40||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499|
|7.||Nikon D80||132 mm||103 mm||77 mm||668 g||600||n||Aug 2006||999|
|8.||Nikon D50||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749|
|9.||Nikon D70s||140 mm||111 mm||78 mm||679 g||500||n||Apr 2005||899|
|10.||Nikon D200||147 mm||113 mm||74 mm||920 g||400||Y||Nov 2005||1,699|
|11.||Nikon D70||140 mm||111 mm||78 mm||679 g||400||n||Jan 2004||999|
|12.||Nikon D1X||157 mm||153 mm||85 mm||1100 g||1200||Y||Feb 2001||5,999|
|13.||Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649|
|14.||Pentax K-S2||123 mm||91 mm||73 mm||678 g||410||Y||Feb 2015||749|
|15.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099|
|16.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|17.||Pentax K-5 II||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2012||1,099|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The KP was launched at a markedly lower price (by 45 percent) than the D100, 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the KP is 1 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the KP offers a higher resolution of 24.1 megapixels, compared with 6 MP of the D100. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.90μm versus 7.85μm for the D100). However, it should be noted that the KP is much more recent (by 14 years and 11 months) than the D100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the KP has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax KP implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the KP for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Nikon D100 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.
Unlike the D100, the KP has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Nikon D100 has a native sensitivity range from ISO 200 to ISO 800, which can be extended to ISO 200-1600. The corresponding ISO settings for the Pentax KP are ISO 100 to ISO 819200 (no boost).
For many cameras, data on sensor performance has been reported by DXO Mark. 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. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|15.||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 also of capturing video footage. The KP indeed provides for movie recording, while the D100 does not. The highest resolution format that the KP can use is 1080/60i.
Beyond body and sensor, cameras can and do differ across a range of features. The D100 and the KP 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 KP offers a wider field of view (100%) than the one in the D100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the KP has a higher magnification (0.63x vs 0.53x), 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 D100, the Pentax KP, and comparable cameras.
|1.||Nikon D100||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
|2.||Pentax KP||optical||n||3.0 / 921||tilting||n||1/6000s||7.0||Y||Y|
|3.||Canon 10D||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
|4.||Nikon D90||optical||Y||3.0 / 920||fixed||n||1/4000s||4.5||Y||n|
|5.||Nikon D300||optical||Y||3.0 / 922||fixed||n||1/8000s||6.0||Y||n|
|6.||Nikon D40||optical||n||2.5 / 230||fixed||n||1/4000s||2.5||Y||n|
|7.||Nikon D80||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|8.||Nikon D50||optical||n||2.0 / 130||fixed||n||1/4000s||2.5||Y||n|
|9.||Nikon D70s||optical||n||2.0 / 130||fixed||n||1/8000s||3.0||Y||n|
|10.||Nikon D200||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0||Y||n|
|11.||Nikon D70||optical||n||1.8 / 130||fixed||n||1/8000s||3.0||Y||n|
|12.||Nikon D1X||optical||Y||2.0 / 120||fixed||n||1/16000s||3.0||n||n|
|13.||Pentax K-70||optical||n||3.0 / 921||swivel||n||1/6000s||6.0||Y||Y|
|14.||Pentax K-S2||optical||n||3.0 / 921||swivel||n||1/6000s||5.4||Y||Y|
|15.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||n||Y|
|16.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||Y||Y|
|17.||Pentax K-5 II||optical||Y||3.0 / 921||fixed||n||1/8000s||7.0||Y||Y|
One feature that is present on the D100, but is missing on the KP is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the KP is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Pentax KP 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 D100 writes its imaging data to Compact Flash cards, while the KP 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 D100 and Pentax KP and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon D100||Y||- / -||-||-||-||1.1||-||-||-|
|2.||Pentax KP||Y||stereo / mono||Y||-||-||2.0||Y||-||-|
|3.||Canon 10D||Y||- / -||-||-||-||1.1||-||-||-|
|4.||Nikon D90||Y||mono / mono||-||-||mini||2.0||-||-||-|
|5.||Nikon D300||Y||- / -||-||-||mini||2.0||-||-||-|
|6.||Nikon D40||Y||- / -||-||-||-||2.0||-||-||-|
|7.||Nikon D80||Y||- / -||-||-||-||2.0||-||-||-|
|8.||Nikon D50||Y||- / -||-||-||-||2.0||-||-||-|
|9.||Nikon D70s||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Nikon D200||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Nikon D70||Y||- / -||-||-||-||1.0||-||-||-|
|12.||Nikon D1X||Y||- / -||-||-||-||FW||-||-||-|
|13.||Pentax K-70||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|14.||Pentax K-S2||Y||mono / mono||Y||-||micro||2.0||Y||Y||-|
|15.||Pentax K-3 II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|16.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|17.||Pentax K-5 II||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the KP offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D100 does not provide wifi capability.
The KP is a recent model that features in the current product line-up of Pentax. In contrast, the D100 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the D100 was succeeded by the Nikon D200. 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 how do things add up? Is the Nikon D100 better than the Pentax KP or vice versa? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Nikon D100:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- More heavily discounted: Has been available for much longer (launched in February 2002).
Arguments in favor of the Pentax KP:
- More detail: Has more megapixels (24.1 vs 6MP), which boosts linear resolution by 100%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.53x).
- Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (921k vs 118k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (7 vs 3 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (132x101mm vs 144x116mm) and will fit more readily into a bag.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- More affordable: Was introduced into a lower priced category (45 percent cheaper at launch).
- More modern: Reflects 14 years and 11 months of technical progress since the D100 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the KP is the clear winner of the contest (20 : 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 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 D100 and the Pentax KP 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 D100 or the KP perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 D100||..||..||..||+ +||o||..||Feb 2002||1,999|
|2.||Pentax KP||4/5||..||3/5||82/100||5/5||4.5/5||Jan 2017||1,099|
|3.||Canon 10D||..||..||..||+ +||..||..||Feb 2003||1,999|
|4.||Nikon D90||..||+ +||..||+ +||4/5||4.5/5||Aug 2008||1,299|
|5.||Nikon D300||..||+ +||..||+ +||5/5||4.5/5||Aug 2007||1,799|
|6.||Nikon D40||..||81/100||..||+ +||o||4.5/5||Nov 2006||499|
|7.||Nikon D80||..||+||..||+ +||o||4.5/5||Aug 2006||999|
|8.||Nikon D50||..||78/100||..||+ +||4/5||4.5/5||Apr 2005||749|
|9.||Nikon D70s||..||..||..||..||..||5/5||Apr 2005||899|
|10.||Nikon D200||..||+ +||..||+ +||o||..||Nov 2005||1,699|
|11.||Nikon D70||..||..||..||+ +||..||..||Jan 2004||999|
|12.||Nikon D1X||..||..||..||+ +||..||..||Feb 2001||5,999|
|13.||Pentax K-70||4.5/5||..||..||79/100||4.5/5||4.5/5||Jun 2016||649|
|14.||Pentax K-S2||4.5/5||..||..||..||5/5||4.5/5||Feb 2015||749|
|15.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099|
|16.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||1,299|
|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 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. 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? 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.
Specifications: Nikon D100 vs Pentax KP
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 D100||Pentax KP|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Pentax K mount lenses|
|Launch Date||February 2002||January 2017|
|Launch Price||USD 1,999||USD 1,099|
|Sensor Specs||Nikon D100||Pentax KP|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.7 x 15.6 mm||23.5 x 15.6 mm|
|Sensor Area||369.72 mm2||366.6 mm2|
|Sensor Diagonal||28.4 mm||28.2 mm|
|Sensor Resolution||6 Megapixels||24.1 Megapixels|
|Image Resolution||3008 x 2000 pixels||6016 x 4000 pixels|
|Pixel Pitch||7.85 μm||3.90 μm|
|Pixel Density||1.63 MP/cm2||6.56 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||200 - 800 ISO||100 - 819,200 ISO|
|ISO Boost||200 - 1,600 ISO||no Enhancement|
|Screen Specs||Nikon D100||Pentax KP|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||1.8inch||3.0inch|
|LCD Resolution||118k dots||921k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Nikon D100||Pentax KP|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/6000s|
|Continuous Shooting||3 shutter flaps/s||7 shutter flaps/s|
|Shutter Life Expectancy||50 000 actuations||100 000 actuations|
|Electronic Shutter||no E-Shutter||up to 1/24000s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Nikon D100||Pentax KP|
|USB Connector||USB 1.1||USB 2.0|
|HDMI Port||no HDMI||no HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Body Specs||Nikon D100||Pentax KP|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||370 shots per charge||390 shots per charge|
144 x 116 x 81 mm
(5.7 x 4.6 x 3.2 in)
132 x 101 x 76 mm
(5.2 x 4.0 x 3.0 in)
|Camera Weight||780 g (27.5 oz)||703 g (24.8 oz)|
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