Fujifilm X-T20 vs Pentax K-3
The Fujifilm X-T20 and the Pentax K-3 are two digital cameras that were announced, respectively, in January 2017 and October 2013. The X-T20 is a mirrorless interchangeable lens camera, while the K-3 is a DSLR. Both cameras are equipped with an APS-C sensor. The Fujifilm has a resolution of 24 megapixels, whereas the Pentax provides 24.1 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 Fujifilm X-T20 and the Pentax K-3? 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 Fujifilm X-T20 and the Pentax K-3. 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.
Both cameras are available in two different colors (black, silver).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 is notably larger (34 percent) than the Fujifilm X-T20. Moreover, the K-3 is substantially heavier (109 percent) than the X-T20. It is noteworthy in this context that the K-3 is splash and dust-proof, while the X-T20 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.
Concerning battery life, the X-T20 gets 350 shots out of its NP-W126S battery, while the K-3 can take 560 images on a single charge of its D-LI90 power pack. The power pack in the X-T20 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.||Fujifilm X-T20||118 mm||83 mm||41 mm||383 g||350||n||Jan 2017||899|
|2.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|3.||Fujifilm X-E4||121 mm||73 mm||33 mm||364 g||380||n||Jan 2021||849|
|4.||Fujifilm X-T30 II||118 mm||83 mm||47 mm||383 g||380||n||Sep 2021||899|
|5.||Fujifilm X-T30||118 mm||83 mm||47 mm||383 g||380||n||Feb 2019||899|
|6.||Fujifilm X-A5||117 mm||68 mm||40 mm||361 g||450||n||Jan 2018||399|
|7.||Fujifilm X-T100||121 mm||83 mm||47 mm||448 g||430||n||May 2018||599|
|8.||Fujifilm X-E3||121 mm||74 mm||43 mm||337 g||350||n||Sep 2017||899|
|9.||Fujifilm X70||113 mm||64 mm||44 mm||340 g||330||n||Jan 2016||799|
|10.||Fujifilm X-A3||117 mm||67 mm||40 mm||339 g||410||n||Aug 2016||399|
|11.||Fujifilm X-T10||118 mm||83 mm||41 mm||381 g||350||n||May 2015||799|
|12.||Fujifilm X-E2||129 mm||75 mm||37 mm||350 g||350||n||Oct 2013||999|
|13.||Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199|
|14.||Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099|
|15.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099|
|16.||Pentax K-5 II||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2012||1,099|
|17.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399|
|Notes: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The X-T20 was launched at a markedly lower price (by 31 percent) than the K-3, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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 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 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, but their sensors differ slightly in size. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the K-3 offers a slightly higher resolution of 24.1 megapixels, compared with 24 MP of the X-T20. 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 3.90μm versus 3.92μm for the X-T20). Moreover, it should be noted that the X-T20 is much more recent (by 3 years and 3 months) than the K-3, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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 X-T20 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Fujifilm X-T20 has a native sensitivity range from ISO 200 to ISO 12800, which can be extended to ISO 100-51200. The corresponding ISO settings for the Pentax K-3 are ISO 100 to ISO 51200 (no boost).
For many cameras, data on sensor performance has been reported by DXO Mark. 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.
|4.||Fujifilm X-T30 II||APS-C||26.0||6240||4160||4K/30p||..||..||..||..|
|15.||Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|16.||Pentax K-5 II||APS-C||16.1||4928||3264||1080/25p||23.8||14.1||1235||82|
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 X-T20 provides a higher video resolution than the K-3. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the X-T20 has an electronic viewfinder (2360k dots), while the K-3 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 K-3 has a higher magnification than the one of the X-T20 (0.63x vs 0.62x), 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 Fujifilm X-T20 and Pentax K-3 in connection with corresponding information for a sample of similar cameras.
|1.||Fujifilm X-T20||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||n|
|2.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||Y||Y|
|3.||Fujifilm X-E4||2360||n||3.0 / 1620||tilting||Y||1/4000s||8.0||n||n|
|4.||Fujifilm X-T30 II||2360||n||3.0 / 1620||tilting||Y||1/4000s||8.0||Y||n|
|5.||Fujifilm X-T30||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||n|
|6.||Fujifilm X-A5||none||n||3.0 / 1040||tilting||Y||1/4000s||6.0||Y||n|
|7.||Fujifilm X-T100||2360||n||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|8.||Fujifilm X-E3||2360||n||3.0 / 1040||fixed||Y||1/4000s||8.0||n||n|
|9.||Fujifilm X70||optional||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||n|
|10.||Fujifilm X-A3||none||n||3.0 / 1040||tilting||Y||1/4000s||6.0||Y||n|
|11.||Fujifilm X-T10||2360||n||3.0 / 920||tilting||n||1/4000s||8.0||Y||n|
|12.||Fujifilm X-E2||2360||n||3.0 / 1040||fixed||n||1/4000s||7.0||Y||n|
|13.||Nikon D7100||optical||Y||3.2 / 1229||fixed||n||1/8000s||6.0||Y||n|
|14.||Pentax KP||optical||n||3.0 / 921||tilting||n||1/6000s||7.0||Y||Y|
|15.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||n||Y|
|16.||Pentax K-5 II||optical||Y||3.0 / 921||fixed||n||1/8000s||7.0||Y||Y|
|17.||Sony A77||2359||Y||3.0 / 921||full-flex||n||1/8000s||12.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The X-T20 has a touchscreen, while the K-3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
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 X-T20 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 Fujifilm X-T20 and the Pentax K-3 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 X-T20 and the K-3 write their files to SDXC cards. The K-3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the X-T20 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 Fujifilm X-T20 and Pentax K-3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Fujifilm X-T20||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|2.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|3.||Fujifilm X-E4||Y||stereo / mono||Y||-||micro||3.2||Y||-||Y|
|4.||Fujifilm X-T30 II||Y||stereo / mono||Y||-||micro||3.2||Y||-||Y|
|5.||Fujifilm X-T30||Y||stereo / mono||Y||-||micro||3.1||Y||-||Y|
|6.||Fujifilm X-A5||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|7.||Fujifilm X-T100||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|8.||Fujifilm X-E3||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|9.||Fujifilm X70||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|10.||Fujifilm X-A3||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|11.||Fujifilm X-T10||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|12.||Fujifilm X-E2||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|13.||Nikon D7100||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
|14.||Pentax KP||Y||stereo / mono||Y||-||-||2.0||Y||-||-|
|15.||Pentax K-3 II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|16.||Pentax K-5 II||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|17.||Sony A77||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the X-T20 offers wifi support, while the K-3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Pentax K-3 (unlike the X-T20) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the X-T20 and the K-3 have been discontinued, but can regularly be found used on eBay. The K-3 was replaced by the Pentax K-3 II, while the X-T20 was followed by the Fujifilm X-T100. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Fujifilm and Pentax websites.
So what is the bottom line? Is there a clear favorite between the Fujifilm X-T20 and the Pentax K-3? Which camera is better? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Fujifilm X-T20:
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More framing info: Has an electronic viewfinder that displays shooting data.
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More compact: Is smaller (118x83mm vs 131x100mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 417g or 52 percent) and hence easier to carry around.
- Easier travel charging: Can be conveniently charged via its USB port.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- 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 (31 percent cheaper at launch).
- More modern: Reflects 3 years and 3 months of technical progress since the K-3 launch.
Advantages of the Pentax K-3:
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.62x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Longer lasting: Gets more shots (560 versus 350) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- 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.
- More heavily discounted: Has been around for much longer (launched in October 2013).
If the number of relative strengths (bullet points above) is taken as a guide, the match-up finishes in a tie (13 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 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 Fujifilm X-T20 and the Pentax K-3 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the X-T20 and the K-3 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 hands-on reviews by experts 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.||Fujifilm X-T20||5/5||+ +||5/5||82/100||5/5||4.5/5||Jan 2017||899|
|2.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||1,299|
|3.||Fujifilm X-E4||4/5||..||4/5||..||4.5/5||4/5||Jan 2021||849|
|4.||Fujifilm X-T30 II||..||..||..||..||..||..||Sep 2021||899|
|5.||Fujifilm X-T30||5/5||+ +||5/5||84/100||4.5/5||4.5/5||Feb 2019||899|
|6.||Fujifilm X-A5||..||+||4.1/5||..||4/5||3.5/5||Jan 2018||399|
|7.||Fujifilm X-T100||4/5||+||4.5/5||79/100||4/5||4.5/5||May 2018||599|
|8.||Fujifilm X-E3||4.5/5||+||4.5/5||84/100||4.5/5||4.5/5||Sep 2017||899|
|9.||Fujifilm X70||4.5/5||..||..||76/100||4.5/5||4.5/5||Jan 2016||799|
|10.||Fujifilm X-A3||..||..||..||74/100||4.5/5||4/5||Aug 2016||399|
|11.||Fujifilm X-T10||4.5/5||+ +||..||80/100||5/5||5/5||May 2015||799|
|12.||Fujifilm X-E2||4/5||..||..||80/100||4.5/5||5/5||Oct 2013||999|
|13.||Nikon D7100||5/5||+ +||..||85/100||4.5/5||4.5/5||Feb 2013||1,199|
|14.||Pentax KP||4/5||..||3/5||82/100||5/5||4.5/5||Jan 2017||1,099|
|15.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099|
|16.||Pentax K-5 II||5/5||..||..||80/100||5/5||4.5/5||Sep 2012||1,099|
|17.||Sony A77||5/5||91/100||..||81/100||..||5/5||Aug 2011||1,399|
|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.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 200D vs Pentax K-3
- Canon T1i vs Fujifilm X-T20
- Canon T8i vs Fujifilm X-T20
- Fujifilm X-T20 vs Fujifilm X10
- Fujifilm X-T20 vs Nikon B700
- Fujifilm X-T20 vs Nikon D2H
- Fujifilm X-T20 vs Nikon D7500
- Fujifilm X100S vs Pentax K-3
- Leica X1 vs Pentax K-3
- Olympus E-PM1 vs Pentax K-3
- Olympus TG-6 vs Pentax K-3
- Panasonic G95 vs Pentax K-3
Specifications: Fujifilm X-T20 vs Pentax K-3
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||Fujifilm X-T20||Pentax K-3|
|Camera Type||Mirrorless system camera||Digital single lens reflex|
|Camera Lens||Fujifilm X mount lenses||Pentax K mount lenses|
|Launch Date||January 2017||October 2013|
|Launch Price||USD 899||USD 1,299|
|Sensor Specs||Fujifilm X-T20||Pentax K-3|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.6 x 15.6 mm||23.5 x 15.6 mm|
|Sensor Area||368.16 mm2||366.6 mm2|
|Sensor Diagonal||28.3 mm||28.2 mm|
|Sensor Resolution||24 Megapixels||24.1 Megapixels|
|Image Resolution||6000 x 4000 pixels||6016 x 4000 pixels|
|Pixel Pitch||3.92 μm||3.90 μm|
|Pixel Density||6.52 MP/cm2||6.56 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||4K/30p Video||1080/60i Video|
|ISO Setting||200 - 12,800 ISO||100 - 51,200 ISO|
|ISO Boost||100 - 51,200 ISO||no Enhancement|
|Image Processor||X-Processor Pro2||PRIME III|
|DXO Sensor Quality (score)||..||80|
|DXO Color Depth (bits)||..||23.7|
|DXO Dynamic Range (EV)||..||13.4|
|DXO Low Light (ISO)||..||1216|
|Screen Specs||Fujifilm X-T20||Pentax K-3|
|Viewfinder Type||Electronic viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.2inch|
|LCD Resolution||1040k dots||1037k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Fujifilm X-T20||Pentax K-3|
|Focus System||On-Sensor Phase-detect||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||8 shutter flaps/s||8.3 shutter flaps/s|
|Electronic Shutter||up to 1/32000s||no E-Shutter|
|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||Single card slot||Dual card slots|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Fujifilm X-T20||Pentax K-3|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 3.0|
|HDMI Port||micro HDMI||mini HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||Wifi built-in||no Wifi|
|Body Specs||Fujifilm X-T20||Pentax K-3|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||350 shots per charge||560 shots per charge|
|In-Camera Charging||USB charging||no USB charging|
118 x 83 x 41 mm
(4.6 x 3.3 x 1.6 in)
131 x 100 x 77 mm
(5.2 x 3.9 x 3.0 in)
|Camera Weight||383 g (13.5 oz)||800 g (28.2 oz)|
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