Nikon D7100 vs Pentax K-70
The Nikon D7100 and the Pentax K-70 are two digital cameras that were revealed to the public, respectively, in February 2013 and June 2016. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 24 megapixels.
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 D7100 and the Pentax K-70? 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 D7100 and the Pentax K-70. 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.
The K-70 can be obtained in two different colors (black, silver), while the D7100 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 K-70 is notably smaller (19 percent) than the Nikon D7100. Moreover, the K-70 is markedly lighter (10 percent) than the D7100. 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.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.
|1.||Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199||ebay.com|
|2.||Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649||amazon.com|
|3.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199||ebay.com|
|4.||Nikon D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299||amazon.com|
|5.||Nikon D500||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999||amazon.com|
|6.||Nikon D7200||136 mm||107 mm||76 mm||765 g||1110||Y||Mar 2015||1,199||ebay.com|
|7.||Nikon D750||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299||ebay.com|
|8.||Nikon D3300||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499||ebay.com|
|9.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999||amazon.com|
|10.||Nikon D600||141 mm||113 mm||82 mm||850 g||900||Y||Sep 2012||2,099||ebay.com|
|11.||Nikon D7000||132 mm||105 mm||77 mm||780 g||1050||Y||Sep 2010||1,499||ebay.com|
|12.||Pentax K-3 III||135 mm||104 mm||74 mm||820 g||800||Y||Mar 2021||1,999||amazon.com|
|13.||Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099||ebay.com|
|14.||Pentax K-S2||123 mm||91 mm||73 mm||678 g||410||Y||Feb 2015||749||ebay.com|
|15.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099||ebay.com|
|16.||Pentax K-50||130 mm||97 mm||71 mm||650 g||410||Y||Jun 2013||599||ebay.com|
|17.||Sony RX10||129 mm||88 mm||102 mm||813 g||420||Y||Oct 2013||1,299||ebay.com|
|Note: 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 K-70 was launched at a markedly lower price (by 46 percent) than the D7100, 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 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 24 megapixels. This similarity in sensor specs implies that both the D7100 and the K-70 have the same pixel density, as well as the same pixel size. It should, however, be noted that the K-70 is much more recent (by 3 years and 3 months) than the D7100, and its sensor will have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
The K-70 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the D7100, the K-70 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 D7100 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 50-25600. The corresponding ISO settings for the Pentax K-70 are ISO 100 to ISO 102400 (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.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|7.||Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|9.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|10.||Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|12.||Pentax K-3 III||APS-C||25.6||6192||4128||4K/30p||24.2||13.7||2083||85|
|15.||Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the D7100 provides a higher frame rate than the K-70. It can shoot video footage at 1080/60p, while the Pentax is limited to 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. The D7100 and the K-70 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinders of both cameras offer the same field of view (100%), as well as the same magnification (0.63x). The adjacent table lists some of the other core features of the Nikon D7100 and Pentax K-70 along with similar information for a selection of comparators.
|1.||Nikon D7100||optical||Y||3.2 / 1229||fixed||n||1/8000s||6.0/s||Y||n|
|2.||Pentax K-70||optical||n||3.0 / 921||swivel||n||1/6000s||6.0/s||Y||Y|
|3.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|4.||Nikon D7500||optical||Y||3.2 / 922||tilting||Y||1/8000s||8.0/s||Y||n|
|5.||Nikon D500||optical||Y||3.2 / 2359||tilting||Y||1/8000s||10.0/s||n||n|
|6.||Nikon D7200||optical||Y||3.2 / 1229||fixed||n||1/8000s||6.0/s||Y||n|
|7.||Nikon D750||optical||Y||3.2 / 1229||tilting||n||1/4000s||6.0/s||Y||n|
|8.||Nikon D3300||optical||n||3.0 / 921||fixed||n||1/4000s||5.0/s||Y||n|
|9.||Nikon D610||optical||Y||3.2 / 921||fixed||n||1/4000s||6.0/s||Y||n|
|10.||Nikon D600||optical||Y||3.0 / 921||fixed||n||1/4000s||5.5/s||Y||n|
|11.||Nikon D7000||optical||Y||3.0 / 921||fixed||n||1/8000s||6.0/s||Y||n|
|12.||Pentax K-3 III||optical||Y||3.2 / 1620||fixed||Y||1/8000s||12.0/s||n||Y|
|13.||Pentax KP||optical||n||3.0 / 921||tilting||n||1/6000s||7.0/s||Y||Y|
|14.||Pentax K-S2||optical||n||3.0 / 921||swivel||n||1/6000s||5.4/s||Y||Y|
|15.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||n||Y|
|16.||Pentax K-50||optical||n||3.0 / 921||fixed||n||1/6000s||6.0/s||Y||Y|
|17.||Sony RX10||1440||Y||3.0 / 1229||tilting||n||1/3200s||10.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that is present on the D7100, but is missing on the K-70 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 K-70 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D7100 does not have a selfie-screen.
The Nikon D7100 and the Pentax K-70 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.
Concerning the storage of imaging data, both the D7100 and the K-70 write their files to SDXC cards. The D7100 features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-70 only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 D7100 and Pentax K-70 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon D7100||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
|2.||Pentax K-70||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|3.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|4.||Nikon D7500||Y||stereo / mono||Y||Y||mini||2.0||Y||-||Y|
|5.||Nikon D500||Y||stereo / mono||Y||Y||mini||3.0||Y||Y||Y|
|6.||Nikon D7200||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|7.||Nikon D750||Y||stereo / mono||Y||Y||mini||2.0||Y||-||-|
|8.||Nikon D3300||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|9.||Nikon D610||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|10.||Nikon D600||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|11.||Nikon D7000||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|12.||Pentax K-3 III||Y||stereo / mono||Y||Y||micro||3.2||Y||-||Y|
|13.||Pentax KP||Y||stereo / mono||Y||-||-||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-50||Y||mono / mono||-||-||micro||2.0||-||-||-|
|17.||Sony RX10||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the D7100 has a headphone jack, which is not present on the K-70 This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.
The K-70 is a recent model that features in the current product line-up of Pentax. In contrast, the D7100 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the D7100 was succeeded by the Nikon D7200. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Pentax websites.
So what is the bottom line? Is the Nikon D7100 better than the Pentax K-70 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Nikon D7100:
- Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1229k vs 921k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/6000s) to freeze action.
- Longer lasting: Can take more shots (950 versus 410) on a single battery charge.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been available for much longer (launched in February 2013).
Arguments in favor of the Pentax K-70:
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- More compact: Is smaller (126x93mm vs 136x107mm) and will fit more readily into a bag.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- 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 (46 percent cheaper at launch).
- More modern: Reflects 3 years and 3 months of technical progress since the D7100 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the match-up finishes in a tie (9 points each). 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 D7100 and the Pentax K-70 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 D7100 and the K-70 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.
This is why expert reviews 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 D7100||5/5||+ +||..||85/100||4.5/5||4.5/5||Feb 2013||1,199||ebay.com|
|2.||Pentax K-70||4.5/5||..||..||79/100||4.5/5||4.5/5||Jun 2016||649||amazon.com|
|3.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199||ebay.com|
|4.||Nikon D7500||4.5/5||+ +||4.5/5||86/100||5/5||4.5/5||Apr 2017||1,299||amazon.com|
|5.||Nikon D500||5/5||+ +||4.7/5||91/100||4.5/5||5/5||Jan 2016||1,999||amazon.com|
|6.||Nikon D7200||4/5||+ +||..||84/100||4.5/5||4.5/5||Mar 2015||1,199||ebay.com|
|7.||Nikon D750||5/5||+ +||4/5||90/100||4.5/5||4.5/5||Sep 2014||2,299||ebay.com|
|8.||Nikon D3300||3/5||+||..||77/100||4.5/5||4.5/5||Jan 2014||499||ebay.com|
|9.||Nikon D610||4/5||+ +||..||87/100||4.5/5||4.5/5||Oct 2013||1,999||amazon.com|
|10.||Nikon D600||4/5||+ +||..||87/100||5/5||4.5/5||Sep 2012||2,099||ebay.com|
|11.||Nikon D7000||4/5||..||..||80/100||4.5/5||4.5/5||Sep 2010||1,499||ebay.com|
|12.||Pentax K-3 III||4/5||..||3/5||..||4.5/5||..||Mar 2021||1,999||amazon.com|
|13.||Pentax KP||4/5||..||3/5||82/100||5/5||4.5/5||Jan 2017||1,099||ebay.com|
|14.||Pentax K-S2||4.5/5||..||..||..||5/5||4.5/5||Feb 2015||749||ebay.com|
|15.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099||ebay.com|
|16.||Pentax K-50||5/5||..||..||..||5/5||4.5/5||Jun 2013||599||ebay.com|
|17.||Sony RX10||5/5||+||..||80/100||4.5/5||4.5/5||Oct 2013||1,299||ebay.com|
|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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 1D X Mark II vs Pentax K-70
- Canon G7 X Mark III vs Nikon D7100
- Canon M200 vs Pentax K-70
- Leica TL vs Nikon D7100
- Nikon D70 vs Nikon D7100
- Nikon D7100 vs Panasonic GX80
- Nikon D7100 vs Panasonic LX100
- Nikon D7100 vs Sony RX1R
- Olympus E-420 vs Pentax K-70
- Panasonic G1 vs Pentax K-70
- Pentax K-70 vs Pentax K-S2
- Pentax K-70 vs Sony H200
Specifications: Nikon D7100 vs Pentax K-70
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 D7100||Pentax K-70|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Pentax K mount lenses|
|Launch Date||February 2013||June 2016|
|Launch Price||USD 1,199||USD 649|
|Sensor Specs||Nikon D7100||Pentax K-70|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.5 x 15.6 mm||23.5 x 15.6 mm|
|Sensor Area||366.6 mm2||366.6 mm2|
|Sensor Diagonal||28.2 mm||28.2 mm|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.91 μm||3.91 μm|
|Pixel Density||6.55 MP/cm2||6.55 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||1080/60p Video||1080/60i Video|
|ISO Setting||100 - 6,400 ISO||100 - 102,400 ISO|
|ISO Boost||50 - 25,600 ISO||no Enhancement|
|Image Processor||EXPEED 4||PRIME MII|
|DXO Sensor Quality (score)||83||..|
|DXO Color Depth (bits)||24.2||..|
|DXO Dynamic Range (EV)||13.7||..|
|DXO Low Light (ISO)||1256||..|
|Screen Specs||Nikon D7100||Pentax K-70|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||100%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.0inch|
|LCD Resolution||1229k dots||921k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Shooting Specs||Nikon D7100||Pentax K-70|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/6000s|
|Continuous Shooting||6 shutter flaps/s||6 shutter flaps/s|
|Shutter Life Expectancy||150 000 actuations||100 000 actuations|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Nikon D7100||Pentax K-70|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Body Specs||Nikon D7100||Pentax K-70|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||950 shots per charge||410 shots per charge|
136 x 107 x 76 mm
(5.4 x 4.2 x 3.0 in)
126 x 93 x 74 mm
(5.0 x 3.7 x 2.9 in)
|Camera Weight||765 g (27.0 oz)||688 g (24.3 oz)|
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