Pentax K-50 vs Zeiss ZX1
The Pentax K-50 and the Zeiss ZX1 are two digital cameras that were officially introduced, respectively, in June 2013 and September 2018. The K-50 is a DSLR, while the ZX1 is a fixed lens compact. The cameras are based on an APS-C (K-50) and a full frame (ZX1) sensor. The Pentax has a resolution of 16.1 megapixels, whereas the Zeiss provides 37.4 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 Zeiss ZX1? 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 physical size and weight of the Pentax K-50 and the Zeiss ZX1 are illustrated in the side-by-side display below. 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 size dimensions are rounded to the nearest millimeter.
The K-50 can be obtained in three different colors (black, red, white), while the ZX1 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 Zeiss ZX1 is somewhat larger (5 percent) than the Pentax K-50. It is worth mentioning in this context that the K-50 is splash and dust resistant, while the ZX1 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the ZX1 has a lens built in, whereas the K-50 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
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.||Pentax K-50||130 mm||97 mm||71 mm||650 g||410||Y||Jun 2013||599|
|2.||Zeiss ZX1||142 mm||93 mm||46 mm||800 g||250||n||Sep 2018||5,999|
|3.||Leica Q2||130 mm||80 mm||92 mm||718 g||370||Y||Mar 2019||4,995|
|4.||Leica V-LUX 5||136 mm||97 mm||131 mm||812 g||350||n||Jul 2019||1,249|
|5.||Nikon Df||144 mm||110 mm||67 mm||760 g||1400||Y||Nov 2013||2,749|
|6.||Olympus E-M10||119 mm||82 mm||46 mm||396 g||320||n||Jan 2014||699|
|7.||Panasonic FZ1000 II||136 mm||97 mm||131 mm||810 g||350||n||Feb 2019||899|
|8.||Panasonic FZ1000||137 mm||99 mm||131 mm||831 g||360||n||Jun 2014||899|
|9.||Panasonic GH4||133 mm||93 mm||84 mm||560 g||500||Y||Feb 2014||1,499|
|10.||Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649|
|11.||Pentax K-S1||121 mm||93 mm||70 mm||558 g||410||n||Aug 2014||749|
|12.||Pentax K-500||130 mm||97 mm||71 mm||646 g||710||n||Jun 2013||549|
|13.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|14.||Pentax K-30||130 mm||97 mm||71 mm||650 g||410||Y||May 2012||849|
|15.||Pentax K-5 II||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2012||1,099|
|16.||Pentax K-5||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2010||1,099|
|17.||Sony RX100 VI||102 mm||58 mm||43 mm||301 g||240||n||Jun 2018||1,199|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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.
Of the two cameras under consideration, the Pentax K-50 features an APS-C sensor and the Zeiss ZX1 a full frame sensor. The sensor area in the ZX1 is 135 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.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
With 37.4MP, the ZX1 offers a higher resolution than the K-50 (16.1MP), but the ZX1 nevertheless has marginally larger individual pixels (pixel pitch of 4.81μm versus 4.77μm for the K-50) due to its larger sensor. Moreover, the ZX1 is a much more recent model (by 5 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 Zeiss ZX1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the ZX1 for good quality output (200 dots per inch) amounts to 37.4 x 25 inches or 95.1 x 63.4 cm, for very good quality (250 dpi) 30 x 20 inches or 76.1 x 50.7 cm, and for excellent quality (300 dpi) 25 x 16.6 inches or 63.4 x 42.3 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 Pentax K-50 has a native sensitivity range from ISO 100 to ISO 51200. The corresponding ISO settings for the Zeiss ZX1 are ISO 80 to ISO 51200 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
| DXO |
|2.||Zeiss ZX1||Full Frame||37.4||7488||4992||4K/30p||..||..||..||..|
|3.||Leica Q2||Full Frame||46.7||8368||5584||4K/30p||26.4||13.5||2491||96|
|4.||Leica V-LUX 5||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|5.||Nikon Df||Full Frame||16.2||4928||3280||none||24.6||13.1||3279||89|
|6.||Olympus E-M10||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|7.||Panasonic FZ1000 II||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|9.||Panasonic GH4||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74|
|15.||Pentax K-5 II||APS-C||16.1||4928||3264||1080/25p||23.8||14.1||1235||82|
|17.||Sony RX100 VI||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the ZX1 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.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the ZX1 has an electronic viewfinder (6221k 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 ZX1 has a higher magnification than the one of the K-50 (0.74x 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 Zeiss ZX1 in connection with corresponding information for a sample of similar cameras.
|4.||Leica V-LUX 5||2360||n||3.0||1240||swivel||Y||1/4000s||12.0||Y||Y|
|7.||Panasonic FZ1000 II||2360||n||3.0||1240||swivel||Y||1/4000s||12.0||Y||Y|
|15.||Pentax K-5 II||optical||Y||3.0||921||fixed||n||1/8000s||7.0||Y||Y|
|17.||Sony RX100 VI||2359||n||3.0||1229||tilting||Y||1/2000s||24.0||Y||Y|
One difference between the cameras concerns the presence of an on-board flash. The K-50 has one, while the ZX1 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 ZX1 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 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 K-50 writes its imaging data to SDXC cards, while the ZX1 uses an internal SSD.
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 Zeiss ZX1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|4.||Leica V-LUX 5||Y||stereo||mono||-||-||micro||2.0||Y||-||Y|
|7.||Panasonic FZ1000 II||Y||stereo||mono||Y||-||micro||2.0||Y||-||Y|
|15.||Pentax K-5 II||Y||stereo||mono||Y||-||mini||2.0||-||-||-|
|17.||Sony RX100 VI||-||stereo||mono||-||-||micro||2.0||Y||Y||Y|
It is notable that the ZX1 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.
The ZX1 is a recent model that features in the current product line-up of Zeiss. 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 two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Zeiss websites.
So what is the bottom line? Is there a clear favorite between the Pentax K-50 and the Zeiss ZX1? Which camera is better? 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.
- Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/1000s) to freeze action.
- Faster burst: Shoots at higher frequency (6 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (410 versus 250) 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.
Reasons to prefer the Zeiss ZX1:
- More detail: Has more megapixels (37.4 vs 16.1MP), which boosts linear resolution by 52%.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.61x).
- Larger screen: Has a bigger rear LCD (4.3" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2765k vs 921k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Ready to shoot: Comes with an integrated lens, while the K-50 requires a separate lens.
- 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.
- More prestigious: Has the Zeiss luxury appeal, which ensures a high resale value.
If the count of individual advantages (bullet points above) is taken as a guide, the ZX1 is the clear winner of the contest (18 : 9 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. 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 Zeiss ZX1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Prime Lens Compact Camera listings 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 remains incomplete and does no justice, for example, to the way the K-50 or the ZX1 perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], 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.||Pentax K-50||5/5||..||..||5/5||4.5/5||Jun 2013||599|
|2.||Zeiss ZX1||..||..||..||..||..||Sep 2018||5,999|
|3.||Leica Q2||..||..||84/100||4.5/5||4/5||Mar 2019||4,995|
|4.||Leica V-LUX 5||..||..||..||4/5||4/5||Jul 2019||1,249|
|5.||Nikon Df||4/5||..||81/100||4/5||4/5||Nov 2013||2,749|
|6.||Olympus E-M10||4/5||..||80/100||5/5||5/5||Jan 2014||699|
|7.||Panasonic FZ1000 II||..||..||83/100||4.5/5||4.5/5||Feb 2019||899|
|8.||Panasonic FZ1000||4/5||+ +||82/100||4.5/5||4.5/5||Jun 2014||899|
|9.||Panasonic GH4||5/5||+ +||85/100||5/5||5/5||Feb 2014||1,499|
|10.||Pentax K-70||4.5/5||..||79/100||4.5/5||4.5/5||Jun 2016||649|
|11.||Pentax K-S1||4/5||..||..||4.5/5||4/5||Aug 2014||749|
|12.||Pentax K-500||..||..||..||4.5/5||4.5/5||Jun 2013||549|
|13.||Pentax K-3||4/5||..||83/100||5/5||5/5||Oct 2013||1,299|
|14.||Pentax K-30||4/5||..||78/100||4.5/5||4.5/5||May 2012||849|
|15.||Pentax K-5 II||5/5||..||80/100||5/5||4.5/5||Sep 2012||1,099|
|16.||Pentax K-5||4/5||..||83/100||5/5||4.5/5||Sep 2010||1,099|
|17.||Sony RX100 VI||4.5/5||+ +||83/100||4/5||4.5/5||Jun 2018||1,199|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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 a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Pentax K-50 vs Zeiss ZX1
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||Zeiss ZX1|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Pentax K mount lenses||35mm f/2.8|
|Launch Date||June 2013||September 2018|
|Launch Price||USD 599||USD 5,999|
|Sensor Specs||Pentax K-50||Zeiss ZX1|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||23.5 x 15.6 mm||36.0 x 24.0 mm|
|Sensor Area||366.6 mm2||864 mm2|
|Sensor Diagonal||28.2 mm||43.3 mm|
|Sensor Resolution||16.1 Megapixels||37.4 Megapixels|
|Image Resolution||4928 x 3264 pixels||7488 x 4992 pixels|
|Pixel Pitch||4.77 μm||4.81 μm|
|Pixel Density||4.39 MP/cm2||4.33 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||4K/30p Video|
|ISO Setting||100 - 51,200 ISO||80 - 51,200 ISO|
|DXO Sensor Quality (score)||79||..|
|DXO Color Depth (bits)||23.7||..|
|DXO Dynamic Range (EV)||13.0||..|
|DXO Low Light (ISO)||1120||..|
|Screen Specs||Pentax K-50||Zeiss ZX1|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||6221k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||4.3inch|
|LCD Resolution||921k dots||2765k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Pentax K-50||Zeiss ZX1|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||6 shutter flaps/s||3 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/8000s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||In-body stabilization||no handshake reduction|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||Internal SSD|
|Second Storage Option||Single card slot||Single SSD|
|Connectivity Specs||Pentax K-50||Zeiss ZX1|
|USB Connector||USB 2.0||USB 3.1|
|HDMI Port||micro HDMI||no HDMI|
|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||Zeiss ZX1|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||410 shots per charge||250 shots per charge|
130 x 97 x 71 mm
(5.1 x 3.8 x 2.8 in)
142 x 93 x 46 mm
(5.6 x 3.7 x 1.8 in)
|Camera Weight||650 g (22.9 oz)||800 g (28.2 oz)|
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