Pentax K-70 Comparison Review
The Pentax K-70 is a DSLR (Digital Single Lens Reflex) camera that was revealed to the public in June 2016 and is equipped with an APS-C sensor. It offers a resolution of 24 megapixel.
Is the Pentax K-70 a good camera? The K-70 has a Camera Elo of 2435. This rating puts the K-70 among the top 20 percent of all digital single lens reflex cameras. In terms of its sensor size category (APS cameras), the K-70 ranks among the top 30 percent. Based on its within category standings, the camera earns a 4.5-star performance rating.
|Digital single lens reflex|
|Pentax K mount lenses|
|24 MP, APS-C Sensor|
|ISO 100 - 102 400|
|3.0 LCD, 921k dots|
|Swivel screen (not touch-sensitive)|
|6 shutter flaps per second|
|410 shots per battery charge|
|126 x 93 x 74 mm, 688 g|
Read on to find out more about the camera's size, sensor, features, reception by expert reviewers, and how it compares to other digital cameras.
Body comparison with a credit card
The side-by-side display below illustrates the physical size of the Pentax K-70 vis-à-vis a credit card. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.
The table below summarizes the key physical specs of the Pentax K-70 alongside a set of comparators. If you want to review a camera pair side-by-side, just select a right-side comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.
|Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649|
|Nikon D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299|
|Olympus E-M1 II||134 mm||91 mm||67 mm||574 g||440||Y||Sep 2016||1,999|
|Panasonic G9||137 mm||97 mm||92 mm||658 g||400||Y||Nov 2017||1,699|
|Panasonic GH5||139 mm||98 mm||87 mm||725 g||410||Y||Jan 2017||1,999|
|Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099|
|Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099|
|Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|Pentax K-5||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2010||1,099|
|Sony A9||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499|
|Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The Pentax K-70 was launched in the US market at a price of $649. 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 with a 35mm slide
The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tent to lead to bigger and heavier cameras and lenses.
The Pentax K-70 features an APS-C sensor and has a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the Pentax K-70 among the medium-sized sensor cameras that aim to strike a balance between image quality and portability.
Consistent information on actual sensor performance is available from DXO Mark for most 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. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
| DXO |
|Olympus E-M1 II||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80|
|Panasonic G9||Four Thirds||20.2||5184||3888||4K/60p||..||..||..||..|
|Panasonic GH5||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77|
|Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|Sony A9||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
Many modern cameras cannot only take still pictures, but also record videos. The K-70 indeed provides movie recording capabilities. The highest resolution format that the K-70 can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the K-70 has an optical viewfinder that provides a field of view of 100% and a magnification of 0.63x. The adjacent tables list some of the other core features of the Pentax K-70 along with similar information for a selection of comparators.
|Olympus E-M1 II||2360||n||3.0||1037||swivel||Y||1/8000s||18.0||n||Y|
|Pentax K-3 II||optical||Y||3.2||1037||fixed||n||1/8000s||8.3||n||Y|
One convenient feature of the K-70 is the presence of an on-board flash. While this built-in flash is not very powerful, it can at times be useful as a fill-in light to brighten deep shadow areas.
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 Pentax K-70 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|Olympus E-M1 II||Y||stereo||mono||Y||Y||micro||3.0||Y||-||-|
|Pentax K-3 II||Y||mono||mono||Y||Y||mini||3.0||-||-||-|
It is notable that the K-70 has a microphone port. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
While the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the K-70 in practical situations. 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 where reviews by experts come in. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog).
|Pentax K-70||..||79/100||4.5/5||4/5||4.5/5||Jun 2016||649|
|Nikon D7500||+ +||86/100||5/5||4.5/5||4.5/5||Apr 2017||1,299|
|Olympus E-M1 II||+ +||85/100||4.5/5||5/5||4.5/5||Sep 2016||1,999|
|Panasonic G9||+ +||85/100||5/5||5/5||5/5||Nov 2017||1,699|
|Panasonic GH5||+ +||85/100||4.5/5||5/5||5/5||Jan 2017||1,999|
|Pentax KP||..||82/100||5/5||..||4.5/5||Jan 2017||1,099|
|Pentax K-3 II||..||..||5/5||4.5/5||5/5||Apr 2015||1,099|
|Pentax K-3||..||83/100||5/5||4.5/5||5/5||Oct 2013||1,299|
|Pentax K-5||..||83/100||5/5||4.5/5||4.5/5||Sep 2010||1,099|
|Sony A9||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499|
|Sony A68||..||..||4/5||..||4/5||Nov 2015||699|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
Pentax K-70 FAQ
Below are some additional questions and answers concerning some particular features of the K-70.
What is the technology behind the imaging sensor in the K-70?
The camera features a CMOS (Complementary Metal–Oxide–Semiconductor) sensor.
Which image processing chip is used to convert the raw signal into an image file and perform noise reduction and image sharpening?
Pentax equipped the K-70 with the PRIME MII image processor.
What is the ISO sensitivity range of the K-70?
The camera has a native sensitivity range from ISO 100 to ISO 102400.
Does the camera have a selfie-friendly screen?
Yes, the LCD-screen of the K-70 is flexible and can be turned to be front-facing for capturing selfies.
What is the life expectancy of the shutter in the Pentax K-70?
Pentax mentions a shutter rating of 100 000 actuations for the K-70. This number represents a Mean Time before Failure, that is an average value. The shutter might fail earlier, or it might last longer. Anyway, in order to exhaust the expected shutter life of the K-70 over, say, three years, one would have to take about 100 pictures each and every day.
Do I need to purchase an external camera trigger to shoot time-lapse sequences?
No, the Pentax K-70 has an intervalometer built-in, so that low frequency shooting (for example, flower blooming, sunset, moon rise) can be undertaken without the need to purchase a separate external intervalometer and related software.
Is it difficult to use manual focus lenses with the Pentax K-70?
The K-70 offers focus peaking as a manual focus aid. This feature works by placing a colored highlight on in-focus zones within the image.
Does the Pentax K-70 feature an autofocus assist light?
Yes, the camera has a lamp built-in that can illuminate the subject and improve autofocus in low-light settings.
What is the fastest shutter speed that can be used with flash?
The K-70's flash sync speed is 1/180 sec.
Does the Pentax K-70 support the Ultra High Speed (UHS) bus interface for SD cards?
Yes, the camera can indeed use UHS-I cards (data transfer speed of up to 104 MB/s).
Which battery does the K-70 use?
The camera gets its power from the D-LI109 (here at amazon), which is a rechargeable Lithium-Ion power pack.
Camera to camera comparisons
In case you would like to check on the differences and similarities with other camera models, just use the search menu below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
|Camera Model||Pentax K-70|
|Camera Type||Digital single lens reflex|
|Camera Lens||Pentax K mount lenses|
|Launch Date||June 2016|
|Launch Price||USD 649|
|Sensor Format||APS-C Sensor|
|Sensor Size||23.5 x 15.6 mm|
|Sensor Area||367 mm2|
|Sensor Diagonal||28.2 mm|
|Sensor Resolution||24 Megapixels|
|Image Resolution||6 000 x 4 000 pixels|
|Pixel Pitch||3.91 μm|
|Pixel Density||6.55 MP/cm2|
|Moiré control||no AA filter|
|Movie Capability||1080/60i Video|
|ISO Setting||100 - 102 400 ISO|
|Image Processor||PRIME MII|
|Viewfinder Type||Optical viewfinder|
|Viewfinder Field of View||100%|
|LCD Framing||Live View|
|LCD Size||921k dots|
|LCD Attachment||Swivel screen|
|Focus System||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking|
|Maximum Shutter Speed||1/6000s|
|Continuous Shooting||6 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations|
|Silent Shooting||no E-Shutter|
|Time Lapse Photography||Intervalometer Built-in|
|Image Stabilization||In-body stabilization|
|Fill Flash||Build-in Flash|
|Storage Medium||SDXC cards|
|Second Storage Option||Single card slot|
|UHS card support||UHS-I|
|USB Connector||USB 2.0|
|HDMI Port||mini HDMI|
|Microphone Port||External MIC port|
|Wifi Support||Wifi built-in|
|Environmental Sealing||Weathersealed body|
|Battery Type||D-LI109 power pack|
|Battery Life (CIPA)||410 shots per charge|
126 x 93 x 74 mm
(5.0 x 3.7 x 2.9 in)
|Camera Weight||688 g (24.3 oz)|
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