Pentax K-50 vs Sony A9 II
The Pentax K-50 and the Sony Alpha A9 II are two digital cameras that were announced, respectively, in June 2013 and October 2019. The K-50 is a DSLR, while the A9 II is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (K-50) and a full frame (A9 II) sensor. The Pentax has a resolution of 16.1 megapixels, whereas the Sony provides 24 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 Pentax K-50 and the Sony Alpha A9 II? 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
An illustration of the physical size and weight of the Pentax K-50 and the Sony A9 II 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 K-50 can be obtained in three different colors (black, red, white), while the A9 II 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 Sony A9 II is somewhat smaller (2 percent) than the Pentax K-50. However, the A9 II is slightly heavier (4 percent) than the K-50. 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 K-50 gets 410 shots out of its Pentax D-LI109 battery, while the A9 II can take 690 images on a single charge of its Sony NP-FZ100 power pack. The power pack in the A9 II 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, 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 |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Pentax K-50 | 130 mm | 97 mm | 71 mm | 650 g | 410 | Y | Jun 2013 | US$ 599 | ebay.com | |
2. | Sony A9 II | 129 mm | 96 mm | 76 mm | 678 g | 690 | Y | Oct 2019 | US$ 4 499 | amazon.com | |
3. | Pentax K-3 | 131 mm | 100 mm | 77 mm | 800 g | 560 | Y | Oct 2013 | US$ 1 299 | ebay.com | |
4. | Pentax K-3 II | 131 mm | 100 mm | 77 mm | 800 g | 720 | Y | Apr 2015 | US$ 1 099 | ebay.com | |
5. | Pentax K-5 | 131 mm | 97 mm | 73 mm | 760 g | 740 | Y | Sep 2010 | US$ 1 099 | ebay.com | |
6. | Pentax K-5 II | 131 mm | 97 mm | 73 mm | 760 g | 740 | Y | Sep 2012 | US$ 1 099 | ebay.com | |
7. | Pentax K-30 | 130 mm | 97 mm | 71 mm | 650 g | 410 | Y | May 2012 | US$ 849 | ebay.com | |
8. | Pentax K-70 | 126 mm | 93 mm | 74 mm | 688 g | 410 | Y | Jun 2016 | US$ 649 | ebay.com | |
9. | Pentax K-500 | 130 mm | 97 mm | 71 mm | 646 g | 710 | n | Jun 2013 | US$ 549 | ebay.com | |
10. | Pentax KP | 132 mm | 101 mm | 76 mm | 703 g | 390 | Y | Jan 2017 | US$ 1 099 | ebay.com | |
11. | Pentax K-S1 | 121 mm | 93 mm | 70 mm | 558 g | 410 | n | Aug 2014 | US$ 749 | ebay.com | |
12. | Pentax K-S2 | 123 mm | 91 mm | 73 mm | 678 g | 410 | Y | Feb 2015 | US$ 749 | ebay.com | |
13. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | US$ 1 999 | amazon.com | |
14. | Sony A7C | 124 mm | 71 mm | 60 mm | 509 g | 740 | Y | Sep 2020 | US$ 1 799 | amazon.com | |
15. | Sony A7R IV | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Jul 2019 | US$ 3 499 | ebay.com | |
16. | Sony A7S III | 127 mm | 97 mm | 81 mm | 699 g | 600 | Y | Jul 2020 | US$ 3 499 | amazon.com | |
17. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | US$ 4 499 | 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 K-50 was launched at a markedly lower price (by 87 percent) than the A9 II, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Pentax K-50 features an APS-C sensor and the Sony A9 II a full frame sensor. The sensor area in the A9 II is 131 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24MP, the A9 II offers a higher resolution than the K-50 (16.1MP), but the A9 II nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 4.77μm for the K-50) due to its larger sensor. Moreover, the A9 II is a much more recent model (by 6 years and 3 months) than the K-50, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Sony A9 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A9 II for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Pentax K-50 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 A9 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Pentax K-50 has a native sensitivity range from ISO 100 to ISO 51200. The corresponding ISO settings for the Sony Alpha A9 II are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
In terms of underlying technology, the K-50 is build around a CMOS sensor, while the A9 II uses a Stacked BSI-CMOS 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.
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"). Of the two cameras under consideration, the A9 II offers substantially better image quality than the K-50 (overall score 14 points higher). The advantage is based on 1.3 bits higher color depth, 1 EV in additional dynamic range, and 1.6 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Pentax K-50 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.0 | 1120 | 79 | |
2. | Sony A9 II | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.0 | 3434 | 93 | |
3. | Pentax K-3 | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.7 | 13.4 | 1216 | 80 | |
4. | Pentax K-3 II | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.6 | 13.6 | 1106 | 80 | |
5. | Pentax K-5 | APS-C | 16.1 | 4928 | 3264 | 1080/25p | 23.7 | 14.1 | 1162 | 82 | |
6. | Pentax K-5 II | APS-C | 16.1 | 4928 | 3264 | 1080/25p | 23.8 | 14.1 | 1235 | 82 | |
7. | Pentax K-30 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.0 | 1129 | 79 | |
8. | Pentax K-70 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 23.8 | 13.1 | 1639 | 80 | |
9. | Pentax K-500 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.1 | 1087 | 79 | |
10. | Pentax KP | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.9 | 13.2 | 1699 | 81 | |
11. | Pentax K-S1 | APS-C | 20.0 | 5472 | 3648 | 1080/30p | 23.5 | 13.0 | 1061 | 78 | |
12. | Pentax K-S2 | APS-C | 20.0 | 5472 | 3648 | 1080/30p | 23.6 | 12.9 | 1514 | 79 | |
13. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
14. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
15. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
16. | Sony A7S III | Full Frame | 12.0 | 4240 | 2832 | 4K/120p | 23.7 | 13.9 | 2520 | 86 | |
17. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 | |
Note: DXO values in italics represent estimates based on sensor size and age. |
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 A9 II provides a better video resolution than the K-50. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A9 II has an electronic viewfinder (3686k dots), while the K-50 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the A9 II has a higher magnification than the one of the K-50 (0.78x vs 0.61x), 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 Pentax K-50 and Sony A9 II 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. | Pentax K-50 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
2. | Sony A9 II | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
3. | Pentax K-3 | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | Y | Y | |
4. | Pentax K-3 II | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | n | Y | |
5. | Pentax K-5 | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 7.0/s | Y | Y | |
6. | Pentax K-5 II | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 7.0/s | Y | Y | |
7. | Pentax K-30 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
8. | Pentax K-70 | optical | n | 3.0 / 921 | swivel | n | 1/6000s | 6.0/s | Y | Y | |
9. | Pentax K-500 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
10. | Pentax KP | optical | n | 3.0 / 921 | tilting | n | 1/6000s | 7.0/s | Y | Y | |
11. | Pentax K-S1 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 5.4/s | Y | Y | |
12. | Pentax K-S2 | optical | n | 3.0 / 921 | swivel | n | 1/6000s | 5.4/s | Y | Y | |
13. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
14. | Sony A7C | 2360 | n | 3.0 / 922 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
15. | Sony A7R IV | 5760 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
16. | Sony A7S III | 9440 | n | 3.0 / 1440 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
17. | Sony A9 | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
One difference between the cameras concerns the presence of an on-board flash. The K-50 has one, while the A9 II does not. While the built-in flash of the K-50 is not very powerful, it can at times be useful as a fill-in light.
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 A9 II 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 K-50 and the Sony A9 II 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-50 and the A9 II write their files to SDXC cards. The A9 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-50 only has one slot. The A9 II supports UHS-II cards (on both slots), while the K-50 cannot take advantage of Ultra High Speed SD cards.
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 Pentax K-50 and Sony Alpha A9 II 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. | Pentax K-50 | Y | mono / mono | - | - | micro | 2.0 | - | - | - | |
2. | Sony A9 II | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
3. | Pentax K-3 | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
4. | Pentax K-3 II | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
5. | Pentax K-5 | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
6. | Pentax K-5 II | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
7. | Pentax K-30 | Y | mono / mono | - | - | - | 2.0 | - | - | - | |
8. | Pentax K-70 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
9. | Pentax K-500 | Y | mono / mono | - | - | - | 2.0 | - | - | - | |
10. | Pentax KP | Y | stereo / mono | Y | - | - | 2.0 | Y | - | - | |
11. | Pentax K-S1 | Y | stereo / mono | - | - | micro | 2.0 | - | - | - | |
12. | Pentax K-S2 | Y | mono / mono | Y | - | micro | 2.0 | Y | Y | - | |
13. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
14. | Sony A7C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
15. | Sony A7R IV | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
16. | Sony A7S III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
17. | Sony A9 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | Y |
It is notable that the A9 II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the K-50 does not provide wifi capability.
Studio photographers will appreciate that the Sony A9 II (unlike the K-50) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The A9 II is a recent model that features in the current product line-up of Sony. In contrast, the K-50 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the K-50 was succeeded by the Pentax K-70. Further information on the features and operation of the K-50 and A9 II can be found, respectively, in the Pentax K-50 Manual (free pdf) or the online Sony A9 II Manual.
Review summary
So how do things add up? Is the Pentax K-50 better than the Sony A9 II or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Pentax K-50:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (87 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2013).
Reasons to prefer the Sony Alpha A9 II:
- More detail: Has more megapixels (24 vs 16.1MP), which boosts linear resolution by 22%.
- Better image quality: Scores substantially higher (14 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.3 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.6 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.61x).
- More detailed LCD: Has a higher resolution rear screen (1440k vs 921k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/6000s) to freeze action.
- Faster burst: Shoots at higher frequency (20 vs 6 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Longer lasting: Gets more shots (690 versus 410) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II) SDXC cards on both slots.
- More modern: Reflects 6 years and 3 months of technical progress since the K-50 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the A9 II is the clear winner of the contest (28 : 4 points). 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-50 and the Sony A9 II 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-50 and the A9 II 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.
Expert reviews
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.
Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Pentax K-50 | 5/5 | .. | .. | .. | 5/5 | 4.5/5 | Jun 2013 | US$ 599 | ebay.com | |
2. | Sony A9 II | .. | .. | 5/5 | 90/100 | 5/5 | 5/5 | Oct 2019 | US$ 4 499 | amazon.com | |
3. | Pentax K-3 | 4/5 | .. | .. | 83/100 | 5/5 | 5/5 | Oct 2013 | US$ 1 299 | ebay.com | |
4. | Pentax K-3 II | 4.5/5 | .. | .. | .. | 5/5 | 5/5 | Apr 2015 | US$ 1 099 | ebay.com | |
5. | Pentax K-5 | 4/5 | .. | .. | 83/100 | 5/5 | 4.5/5 | Sep 2010 | US$ 1 099 | ebay.com | |
6. | Pentax K-5 II | 5/5 | .. | .. | 80/100 | 5/5 | 4.5/5 | Sep 2012 | US$ 1 099 | ebay.com | |
7. | Pentax K-30 | 4/5 | .. | .. | 78/100 | 4.5/5 | 4.5/5 | May 2012 | US$ 849 | ebay.com | |
8. | Pentax K-70 | 4.5/5 | .. | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Jun 2016 | US$ 649 | ebay.com | |
9. | Pentax K-500 | .. | .. | .. | .. | 4.5/5 | 4.5/5 | Jun 2013 | US$ 549 | ebay.com | |
10. | Pentax KP | 4/5 | .. | 3/5 | 82/100 | 5/5 | 4.5/5 | Jan 2017 | US$ 1 099 | ebay.com | |
11. | Pentax K-S1 | 4/5 | .. | .. | .. | 4.5/5 | 4/5 | Aug 2014 | US$ 749 | ebay.com | |
12. | Pentax K-S2 | 4.5/5 | .. | .. | .. | 5/5 | 4.5/5 | Feb 2015 | US$ 749 | ebay.com | |
13. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | US$ 1 999 | amazon.com | |
14. | Sony A7C | 3.5/5 | .. | 3.5/5 | 86/100 | 4/5 | 4/5 | Sep 2020 | US$ 1 799 | amazon.com | |
15. | Sony A7R IV | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2019 | US$ 3 499 | ebay.com | |
16. | Sony A7S III | 4.5/5 | + + | 5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2020 | US$ 3 499 | amazon.com | |
17. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | US$ 4 499 | ebay.com | |
Note: (+ +) 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.
- Canon 7D vs Sony A9 II
- Canon M6 vs Sony A9 II
- Canon SX740 vs Sony A9 II
- Nikon D500 vs Pentax K-50
- Olympus E-M1 III vs Pentax K-50
- Panasonic FZ1000 II vs Pentax K-50
- Panasonic S1R vs Pentax K-50
- Pentax K-50 vs Sony A6100
- Pentax K-50 vs Sony WX800
- Sony A5000 vs Sony A9 II
- Sony A9 II vs Sony RX0
- Sony A9 II vs Sony ZV-E1
Specifications: Pentax K-50 vs Sony A9 II
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-50 | Sony A9 II |
---|---|---|
Camera Type | Digital single lens reflex | Mirrorless system camera |
Camera Lens | Pentax K mount lenses | Sony E mount lenses |
Launch Date | June 2013 | October 2019 |
Launch Price | USD 599 | USD 4,499 |
Sensor Specs | Pentax K-50 | Sony A9 II |
Sensor Technology | CMOS | Stacked BSI-CMOS |
Sensor Format | APS-C Sensor | Full Frame Sensor |
Sensor Size | 23.5 x 15.6 mm | 35.6 x 23.8 mm |
Sensor Area | 366.6 mm2 | 847.28 mm2 |
Sensor Diagonal | 28.2 mm | 42.8 mm |
Crop Factor | 1.5x | 1.0x |
Sensor Resolution | 16.1 Megapixels | 24 Megapixels |
Image Resolution | 4928 x 3264 pixels | 6000 x 4000 pixels |
Pixel Pitch | 4.77 μm | 5.94 μm |
Pixel Density | 4.39 MP/cm2 | 2.83 MP/cm2 |
Moiré control | Anti-Alias filter | Anti-Alias filter |
Movie Capability | 1080/30p Video | 4K/30p Video |
ISO Setting | 100 - 51,200 ISO | 100 - 51,200 ISO |
ISO Boost | no Enhancement | 50 - 204,800 ISO |
Image Processor | PRIME M | BIONZ X |
DXO Sensor Quality (score) | 79 | 93 |
DXO Color Depth (bits) | 23.7 | 25.0 |
DXO Dynamic Range (EV) | 13.0 | 14.0 |
DXO Low Light (ISO) | 1120 | 3434 |
Screen Specs | Pentax K-50 | Sony A9 II |
Viewfinder Type | Optical viewfinder | Electronic viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.61x | 0.78x |
Viewfinder Resolution | 3686k dots | |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 921k dots | 1440k dots |
LCD Attachment | Fixed screen | Tilting screen |
Touch Input | no Touchscreen | Touchscreen |
Shooting Specs | Pentax K-50 | Sony A9 II |
Focus System | Phase-detect AF | On-Sensor Phase-detect |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/6000s | 1/8000s |
Continuous Shooting | 6 shutter flaps/s | 20 shutter flaps/s |
Electronic Shutter | no E-Shutter | up to 1/32000s |
Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
Image Stabilization | In-body stabilization | In-body stabilization |
Fill Flash | Built-in Flash | no On-Board Flash |
Storage Medium | SDXC cards | SDXC cards |
Single or Dual Card Slots | Single card slot | Dual card slots |
UHS card support | no | Dual UHS-II |
Connectivity Specs | Pentax K-50 | Sony A9 II |
External Flash | Hotshoe | Hotshoe |
Studio Flash | no PC Sync | PC Sync socket |
USB Connector | USB 2.0 | USB 3.1 |
HDMI Port | micro HDMI | micro HDMI |
Microphone Port | no MIC socket | External MIC port |
Headphone Socket | no Headphone port | Headphone port |
Wifi Support | no Wifi | Wifi built-in |
Near-Field Communication | no NFC | NFC built-in |
Bluetooth Support | no Bluetooth | Bluetooth built-in |
Body Specs | Pentax K-50 | Sony A9 II |
Environmental Sealing | Weathersealed body | Weathersealed body |
Battery Type | Pentax D-LI109 | Sony NP-FZ100 |
Battery Life (CIPA) | 410 shots per charge | 690 shots per charge |
In-Camera Charging | no USB charging | USB charging |
Body Dimensions |
130 x 97 x 71 mm (5.1 x 3.8 x 2.8 in) |
129 x 96 x 76 mm (5.1 x 3.8 x 3.0 in) |
Camera Weight | 650 g (22.9 oz) | 678 g (23.9 oz) |
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