Pentax K-5 vs YI M1
The Pentax K-5 and the YI M1 are two digital cameras that were announced, respectively, in September 2010 and September 2016. The K-5 is a DSLR, while the M1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (K-5) and a Four Thirds (M1) sensor. The Pentax has a resolution of 16.1 megapixels, whereas the YI provides 20.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Pentax K-5||YI M1|
|Digital single lens reflex||Mirrorless system camera|
|Pentax K mount lenses||Micro Four Thirds lenses|
|16.1 MP, APS-C Sensor||20.2 MP, Four Thirds Sensor|
|1080/25p Video||4K/30p Video|
|ISO 100-12,800 (80 - 51,200)||ISO 100-25,600|
|Optical viewfinder||No viewfinder, LCD framing|
|3.0 LCD, 921k dots||3.0 LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Fixed touchscreen|
|7 shutter flaps per second||5 shutter flaps per second|
|In-body stabilization||Lens stabilization only|
|Weathersealed body||not weather sealed|
|740 shots per battery charge||450 shots per battery charge|
|131 x 97 x 73 mm, 760 g||114 x 64 x 34 mm, 281 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-5 and the YI M1? 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.
An illustration of the physical size and weight of the Pentax K-5 and the YI M1 is provided in the side-by-side display below. 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 M1 can be obtained in two different colors (black, silver), while the K-5 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 YI M1 is considerably smaller (43 percent) than the Pentax K-5. Moreover, the M1 is substantially lighter (63 percent) than the K-5. It is worth mentioning in this context that the K-5 is splash and dust resistant, while the M1 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 power pack in the M1 can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Pentax K-5||5.2 in||3.8 in||2.9 in||26.8 oz||740||Y||Sep 2010||1,099|
|YI M1||4.5 in||2.5 in||1.3 in||9.9 oz||450||n||Sep 2016||349|
|Canon SX730||4.3 in||2.5 in||1.6 in||10.6 oz||250||n||Apr 2017||399|
|Fujifilm X-A3||4.6 in||2.6 in||1.6 in||12.0 oz||410||n||Aug 2016||399|
|Nikon D7500||5.4 in||4.1 in||2.9 in||25.4 oz||950||Y||Apr 2017||1,299|
|Nikon 1 J5||3.9 in||2.4 in||1.3 in||8.1 oz||250||n||Apr 2015||399|
|Nikon D7000||5.2 in||4.1 in||3.0 in||27.5 oz||1050||Y||Sep 2010||1,499|
|Olympus E-M5 II||4.9 in||3.3 in||1.8 in||16.5 oz||310||Y||Feb 2015||1,099|
|Olympus E-M5||4.8 in||3.5 in||1.7 in||15.0 oz||360||Y||Feb 2012||1,299|
|Panasonic GX850||4.2 in||2.6 in||1.3 in||9.5 oz||210||n||Jan 2017||549|
|Panasonic GF7||4.2 in||2.6 in||1.3 in||9.4 oz||230||n||Jan 2015||499|
|Pentax KP||5.2 in||4.0 in||3.0 in||24.8 oz||390||Y||Jan 2017||1,099|
|Pentax K-70||5.0 in||3.7 in||2.9 in||24.3 oz||410||Y||Jun 2016||649|
|Pentax K-3 II||5.2 in||3.9 in||3.0 in||28.2 oz||720||Y||Apr 2015||1,099|
|Pentax K-3||5.2 in||3.9 in||3.0 in||28.2 oz||560||Y||Oct 2013||1,299|
|Sony A77||5.6 in||4.1 in||3.2 in||25.8 oz||470||Y||Aug 2011||1,399|
|Sony A850||6.1 in||4.6 in||3.2 in||31.6 oz||880||Y||Aug 2009||1,999|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
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 M1 was launched at a markedly lower price (by 68 percent) than the K-5, 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Pentax K-5 features an APS-C sensor and the YI M1 a Four Thirds sensor. The sensor area in the M1 is 40 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the K-5 has a native 3:2 aspect ratio, while the one in the M1 offers a 4:3 aspect.
In terms of underlying technology, both cameras are build around CMOS sensors.
Despite having a smaller sensor, the M1 offers a higher resolution of 20.2 megapixels, compared with 16.1 MP of the K-5. 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 3.34μm versus 4.81μm for the K-5). However, it should be noted that the M1 is much more recent (by 6 years) than the K-5, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The resolution advantage of the YI M1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the M1 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Pentax K-5 are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.
The Pentax K-5 has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 80-51200. The corresponding ISO settings for the YI M1 are ISO 100 to ISO 25600 (no boost).
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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|YI M1||Four Thirds||20.2||5184||3888||4K/30p||..||..||..||..|
|Nikon 1 J5||1-inch||20.7||5568||3712||4K/15p||21.1||12.0||479||65|
|Olympus E-M5 II||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73|
|Olympus E-M5||Four Thirds||15.9||4608||3456||1080/60i||22.8||12.3||826||71|
|Panasonic GX850||Four Thirds||15.8||4592||3448||4K/30p||23.2||13.3||586||73|
|Panasonic GF7||Four Thirds||15.8||4592||3448||1080/60p||..||..||..||..|
|Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|Sony A850||Full Frame||24.4||6048||4032||none||23.8||12.2||1415||79|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the M1 provides a better video resolution than the K-5. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/25p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the K-5 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the M1 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Pentax K-5 and YI M1 in connection with corresponding information for a sample of similar cameras.
|Nikon 1 J5||none||n||3.0||1037||tilting||Y||1/4000s||60.0||Y||n|
|Olympus E-M5 II||2360||n||3.0||1037||swivel||Y||1/8000s||10.0||n||Y|
|Pentax K-3 II||optical||Y||3.2||1037||fixed||n||1/8000s||8.3||n||Y|
One difference between the cameras concerns the presence of an on-board flash. The K-5 has one, while the M1 does not. While the built-in flash of the K-5 is not very powerful, it can at times be useful as a fill-in light.
The Pentax K-5 and the YI M1 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 K-5 and the M1 write their files to 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 Pentax K-5 and YI M1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Nikon 1 J5||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Olympus E-M5 II||Y||stereo||mono||Y||-||micro||2.0||Y||-||-|
|Pentax K-3 II||Y||mono||mono||Y||Y||mini||3.0||-||-||-|
It is notable that the K-5 has a microphone port, which is missing on the M1. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
Studio photographers will appreciate that the Pentax K-5 (unlike the M1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The M1 is a recent model that features in the current product line-up of YI. In contrast, the K-5 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the K-5 was succeeded by the Pentax K-5 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and YI websites.
So how do things add up? Is the Pentax K-5 better than the YI M1 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Pentax K-5:
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (7 vs 5 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (740 versus 450) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been available for much longer (launched in September 2010).
Reasons to prefer the YI M1:
- More detail: Has more megapixels (20.2 vs 16.1MP), which boosts linear resolution by 10%.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/25p).
- More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More compact: Is smaller (114x64mm vs 131x97mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 479g or 63 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced into a lower priced category (68 percent cheaper at launch).
- More modern: Reflects 6 years of technical progress since the K-5 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the match-up finishes in a tie (11 points each). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 Pentax K-5 and the YI M1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings 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 says little about, for example, the shooting experience and imaging performance of the K-5 and the M1 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 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 (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Pentax K-5||..||83/100||5/5||4.5/5||4.5/5||Sep 2010||1,099|
|YI M1||..||69/100||..||2.5/5||..||Sep 2016||349|
|Canon SX730||+||..||4/5||..||4/5||Apr 2017||399|
|Fujifilm X-A3||..||74/100||4.5/5||..||4/5||Aug 2016||399|
|Nikon D7500||+ +||86/100||5/5||4.5/5||4.5/5||Apr 2017||1,299|
|Nikon 1 J5||..||..||4.5/5||4/5||4.5/5||Apr 2015||399|
|Nikon D7000||..||80/100||4.5/5||5/5||4.5/5||Sep 2010||1,499|
|Olympus E-M5 II||+ +||81/100||5/5||4.5/5||5/5||Feb 2015||1,099|
|Olympus E-M5||+ +||80/100||4.5/5||5/5||5/5||Feb 2012||1,299|
|Panasonic GX850||+||76/100||4.5/5||4/5||4.5/5||Jan 2017||549|
|Panasonic GF7||+||..||4.5/5||4.5/5||4.5/5||Jan 2015||499|
|Pentax KP||..||82/100||5/5||..||4.5/5||Jan 2017||1,099|
|Pentax K-70||..||79/100||4.5/5||4/5||4.5/5||Jun 2016||649|
|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|
|Sony A77||91/100||81/100||..||4.5/5||5/5||Aug 2011||1,399|
|Sony A850||..||75/100||..||4/5||4.5/5||Aug 2009||1,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated 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 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? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Pentax K-5 vs YI M1
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||Pentax K-5||YI M1|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Pentax K mount lenses||Micro Four Thirds lenses|
|Launch Date||September 2010||September 2016|
|Launch Price||USD 1,099||USD 349|
|Sensor Specs||Pentax K-5||YI M1|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||23.7 x 15.7 mm||17.3 x 13.0 mm|
|Sensor Area||372.09 mm2||224.9 mm2|
|Sensor Diagonal||28.4 mm||21.6 mm|
|Sensor Resolution||16.1 Megapixels||20.2 Megapixels|
|Image Resolution||4928 x 3264 pixels||5184 x 3888 pixels|
|Pixel Pitch||4.81 μm||3.34 μm|
|Pixel Density||4.32 MP/cm2||8.96 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/25p Video||4K/30p Video|
|ISO Setting||100 - 12,800 ISO||100 - 25,600 ISO|
|ISO Boost||80 - 51,200 ISO||no Enhancement|
|DXO Sensor Quality (score)||82||..|
|DXO Color Depth (bits)||23.7||..|
|DXO Dynamic Range (EV)||14.1||..|
|DXO Low Light (ISO)||1162||..|
|Screen Specs||Pentax K-5||YI M1|
|Viewfinder Type||Optical viewfinder||no viewfinder|
|Viewfinder Field of View||100%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||921k dots||1040k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Pentax K-5||YI M1|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/4000s|
|Continuous Shooting||7 shutter flaps/s||5 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||In-body stabilization||Lens stabilization only|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Pentax K-5||YI M1|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||no Wifi||Wifi built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Pentax K-5||YI M1|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||740 shots per charge||450 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
131 x 97 x 73 mm
(5.2 x 3.8 x 2.9 in)
114 x 64 x 34 mm
(4.5 x 2.5 x 1.3 in)
|Camera Weight||760 g (26.8 oz)||281 g (9.9 oz)|
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