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Fujifilm X-S10 vs Pentax K-3 II

The Fujifilm X-S10 and the Pentax K-3 II are two digital cameras that were officially introduced, respectively, in October 2020 and April 2015. The X-S10 is a mirrorless interchangeable lens camera, while the K-3 II is a DSLR. Both cameras are equipped with an APS-C sensor. The Fujifilm has a resolution of 26 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.

Headline Specifications
Fujifilm X-S10
versus
Pentax K-3 II
Fujifilm X-S10   Pentax K-3 II
Mirrorless system camera Digital single lens reflex
Fujifilm X mount lenses Pentax K mount lenses
26 MP – APS-C sensor 24.1 MP – APS-C sensor
4K/30p Video 1080/60i Video
ISO 160-12,800 (80 - 51,200) ISO 100-51,200
Electronic viewfinder (2360k dots) Optical viewfinder
3.0" LCD – 1040k dots 3.2" LCD – 1037k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
8 shutter flaps per second 8.3 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
325 shots per battery charge720 shots per battery charge
126 x 85 x 65 mm, 465 g 131 x 100 x 77 mm, 800 g
logo
Check X-S10 price at
amazon.com
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Check K-3 II offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm X-S10 and the Pentax K-3 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 Fujifilm X-S10 and the Pentax K-3 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 width, height and depth dimensions are rounded to the nearest millimeter.

The K-3 II can be obtained in two different colors (black, silver), while the X-S10 is only available in black.

Size Fujifilm X-S10 vs Pentax K-3 II
Compare X-S10 versus K-3 II top
Comparison X-S10 or K-3 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 II is notably larger (22 percent) than the Fujifilm X-S10. Moreover, the K-3 II is substantially heavier (72 percent) than the X-S10. It is noteworthy in this context that the K-3 II is splash and dust-proof, while the X-S10 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-S10 gets 325 shots out of its NP-W126S battery, while the K-3 II can take 720 images on a single charge of its D-LI90 power pack. The power pack in the X-S10 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. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm X-S10 126 mm 85 mm 65 mm 465 g 325 n Oct 2020 999 amazon.com
2.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
3.
 
Fujifilm X-E4 121 mm 73 mm 33 mm 364 g 380 n Jan 2021 849 amazon.com
4.
 
Fujifilm X-T30 II 118 mm 83 mm 47 mm 383 g 380 n Sep 2021 899 amazon.com
5.
 
Fujifilm X-Pro3 141 mm 83 mm 46 mm 497 g 440 Y Oct 2019 1,799 amazon.com
6.
 
Fujifilm X-T30 118 mm 83 mm 47 mm 383 g 380 n Feb 2019 899ebay.com
7.
 
Fujifilm X-A7 119 mm 68 mm 41 mm 320 g 440 n Sep 2019 499 amazon.com
8.
 
Fujifilm X-T100 121 mm 83 mm 47 mm 448 g 430 n May 2018 599ebay.com
9.
 
Fujifilm X-E3 121 mm 74 mm 43 mm 337 g 350 n Sep 2017 899ebay.com
10.
 
Fujifilm X-T20 118 mm 83 mm 41 mm 383 g 350 n Jan 2017 899ebay.com
11.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 amazon.com
12.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099ebay.com
13.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 amazon.com
14.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
15.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099ebay.com
16.
 
Ricoh GR III 109 mm 62 mm 33 mm 257 g 200 n Feb 2019 899 amazon.com
17.
 
Sony A6400 120 mm 67 mm 50 mm 403 g 410 Y Jan 2019 899 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The X-S10 was somewhat cheaper (by 9 percent) than the K-3 II at launch, but both cameras fall into the same price category. 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.

Sensor comparison

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 tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Fujifilm X-S10 and Pentax K-3 II sensor measures

While the two cameras under review share the same sensor size, the X-S10 offers a slightly higher resolution of 26 megapixels, compared with 24.1 MP of the K-3 II. This megapixels advantage translates into a 4 percent gain in linear resolution. On the other hand, these sensor specs imply that the X-S10 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 3.90μm for the K-3 II). In this context, it should be noted, however, that the X-S10 is much more recent (by 5 years and 5 months) than the K-3 II, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. 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-S10 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the X-S10, the K-3 II has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Fujifilm X-S10 has a native sensitivity range from ISO 160 to ISO 12800, which can be extended to ISO 80-51200. The corresponding ISO settings for the Pentax K-3 II are ISO 100 to ISO 51200 (no boost).

In terms of underlying technology, the X-S10 is build around a BSI-CMOS sensor, while the K-3 II uses a CMOS imager. The X-S10 uses Fujifilm's X-Trans layout of photosites, while the K-3 II employs the more common Bayer array.

X-S10 versus K-3 II MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Fujifilm X-S10 APS-C 26.0 6240 41604K/30p24.213.7205785
2.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
3.
 
Fujifilm X-E4 APS-C 26.0 6240 41604K/30p24.213.7208585
4.
 
Fujifilm X-T30 II APS-C 26.0 6240 41604K/30p24.213.8214485
5.
 
Fujifilm X-Pro3 APS-C 26.0 6240 41604K/30p24.113.6196884
6.
 
Fujifilm X-T30 APS-C 26.0 6240 41604K/30p24.113.5189583
7.
 
Fujifilm X-A7 APS-C 24.0 6000 40004K/30p24.113.6195584
8.
 
Fujifilm X-T100 APS-C 24.0 6000 40004K/15p24.013.4182983
9.
 
Fujifilm X-E3 APS-C 24.0 6000 40004K/30p23.913.3176482
10.
 
Fujifilm X-T20 APS-C 24.0 6000 40004K/30p23.913.2170481
11.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
12.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
13.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
14.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
15.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
16.
 
Ricoh GR III APS-C 24.0 6000 40001080/60p24.113.5189783
17.
 
Sony A6400 APS-C 24.0 6000 40004K/30p24.013.6143183
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 X-S10 provides a higher video resolution than the K-3 II. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/60i.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the X-S10 has an electronic viewfinder (2360k dots), while the K-3 II 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 II has a higher magnification than the one of the X-S10 (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 adjacent table lists some of the other core features of the Fujifilm X-S10 and Pentax K-3 II along with similar information for a selection of comparators.

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Core Features
    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.
 
Fujifilm X-S102360 n3.0 / 1040 swivel Y 1/4000s 8.0/s Y Y
2.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
3.
 
Fujifilm X-E42360 n3.0 / 1620 tilting Y 1/4000s 8.0/s n n
4.
 
Fujifilm X-T30 II2360 n3.0 / 1620 tilting Y 1/4000s 8.0/s Y n
5.
 
Fujifilm X-Pro33690 n3.0 / 1620 tilting Y 1/8000s 8.0/s n n
6.
 
Fujifilm X-T302360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y n
7.
 
Fujifilm X-A7none n3.5 / 2760 swivel Y 1/4000s 6.0/s Y n
8.
 
Fujifilm X-T1002360 n3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
9.
 
Fujifilm X-E32360 n3.0 / 1040 fixed Y 1/4000s 8.0/s n n
10.
 
Fujifilm X-T202360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y n
11.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0/s n Y
12.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
13.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
14.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
15.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
16.
 
Ricoh GR IIIoptional n3.0 / 1037 fixed Y 1/4000s 4.0/s n Y
17.
 
Sony A64002359 n3.0 / 922 tilting Y 1/4000s 11.0/s Y n
Notes: *) 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 X-S10 has one, while the K-3 II does not. While the built-in flash of the X-S10 is not very powerful, it can at times be useful as a fill-in light.

The X-S10 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the K-3 II does not have a selfie-screen.

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-S10 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-S10 and the Pentax K-3 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 X-S10 and the K-3 II write their files to SDXC cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the X-S10 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.

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 Fujifilm X-S10 and Pentax K-3 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Fujifilm X-S10Ystereo / monoY-micro3.2Y-Y
2.
 
Pentax K-3 IIYmono / monoYYmini3.0---
3.
 
Fujifilm X-E4Ystereo / monoY-micro3.2Y-Y
4.
 
Fujifilm X-T30 IIYstereo / monoY-micro3.2Y-Y
5.
 
Fujifilm X-Pro3Ystereo / monoY--3.1Y-Y
6.
 
Fujifilm X-T30Ystereo / monoY-micro3.1Y-Y
7.
 
Fujifilm X-A7Ystereo / monoY-micro2.0Y-Y
8.
 
Fujifilm X-T100Ystereo / monoY-micro2.0Y-Y
9.
 
Fujifilm X-E3Ystereo / monoY-micro2.0Y-Y
10.
 
Fujifilm X-T20Ystereo / monoY-micro2.0Y--
11.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
12.
 
Pentax KPYstereo / monoY--2.0Y--
13.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
14.
 
Pentax K-3Ymono / monoYYmini3.0---
15.
 
Pentax K-5Ystereo / monoY-mini2.0---
16.
 
Ricoh GR IIIYstereo / mono---3.0Y-Y
17.
 
Sony A6400Ystereo / monoY-micro2.0YYY

It is notable that the X-S10 offers wifi support, while the K-3 II 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 II (unlike the X-S10) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the K-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

The X-S10 is a recent model that features in the current product line-up of Fujifilm. In contrast, the K-3 II has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the K-3 II was succeeded by the Pentax K-3 III. Further information on the features and operation of the X-S10 and K-3 II can be found, respectively, in the Fujifilm X-S10 Manual (free pdf) or the online Pentax K-3 II Manual.

Review summary

So what is the bottom line? Is the Fujifilm X-S10 better than the Pentax K-3 II or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Fujifilm X-S10:

  • 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 swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (126x85mm vs 131x100mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 335g or 42 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 fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • 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 modern: Reflects 5 years and 5 months of technical progress since the K-3 II launch.

ilogo

Arguments in favor of the Pentax K-3 II:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • 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 (720 versus 325) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • 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 April 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the X-S10 emerges as the winner of the contest (15 : 13 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

X-S10 15:13 K-3 II

How about other alternatives? Do the specifications of the Fujifilm X-S10 and the Pentax K-3 II 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 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 X-S10 and the K-3 II in practical situations. 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.

Expert reviews

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], 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm X-S105/5..4.5/586/1004.5/54.5/5 Oct 2020 999 amazon.com
2.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
3.
 
Fujifilm X-E44/5..4/5..4.5/54/5 Jan 2021 849 amazon.com
4.
 
Fujifilm X-T30 II5/5..4/5..4.5/54.5/5 Sep 2021 899 amazon.com
5.
 
Fujifilm X-Pro34/5+4/585/1004/5.. Oct 2019 1,799 amazon.com
6.
 
Fujifilm X-T305/5+ +5/584/1004.5/54.5/5 Feb 2019 899ebay.com
7.
 
Fujifilm X-A73/5..3.5/581/1004/53.5/5 Sep 2019 499 amazon.com
8.
 
Fujifilm X-T1004/5+4.5/579/1004/54.5/5 May 2018 599ebay.com
9.
 
Fujifilm X-E34.5/5+4.5/584/1004.5/54.5/5 Sep 2017 899ebay.com
10.
 
Fujifilm X-T205/5+ +5/582/1005/54.5/5 Jan 2017 899ebay.com
11.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 1,999 amazon.com
12.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099ebay.com
13.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 649 amazon.com
14.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
15.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099ebay.com
16.
 
Ricoh GR III4/5..3.5/581/1004/5.. Feb 2019 899 amazon.com
17.
 
Sony A64004/5+4/585/1004.5/54/5 Jan 2019 899 amazon.com
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. 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.

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Check X-S10 price at
amazon.com
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Check K-3 II offers at
ebay.com

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. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Fujifilm X-S10 vs Pentax K-3 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 Specifications
    Camera Model Fujifilm X-S10 Pentax K-3 II
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Fujifilm X mount lenses Pentax K mount lenses
    Launch Date October 2020 April 2015
    Launch Price USD 999 USD 1,099
    Sensor Specs Fujifilm X-S10 Pentax K-3 II
    Sensor Technology BSI-CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.5 x 15.6 mm 23.5 x 15.6 mm
    Sensor Area 366.6 mm2 366.6 mm2
    Sensor Diagonal 28.2 mm 28.2 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 26 Megapixels 24.1 Megapixels
    Image Resolution 6240 x 4160 pixels 6016 x 4000 pixels
    Pixel Pitch 3.76 μm 3.90 μm
    Pixel Density 7.08 MP/cm2 6.56 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 1080/60i Video
    ISO Setting 160 - 12,800 ISO 100 - 51,200 ISO
    ISO Boost 80 - 51,200 ISO no Enhancement
    Image Processor X-Processor 4 PRIME III
    DXO Sensor Quality (score) .. 80
    DXO Color Depth (bits) .. 23.6
    DXO Dynamic Range (EV) .. 13.6
    DXO Low Light (ISO) .. 1106
    Screen Specs Fujifilm X-S10 Pentax K-3 II
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.62x 0.63x
    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 Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Fujifilm X-S10 Pentax K-3 II
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 8 shutter flaps/s 8.3 shutter flaps/s
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-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 UHS-I UHS-I
    Connectivity Specs Fujifilm X-S10 Pentax K-3 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 3.2 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
    Bluetooth Support Bluetooth built-in no Bluetooth
    Geotagging no internal GPS GPS built-in
    Body Specs Fujifilm X-S10 Pentax K-3 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type NP-W126S D-LI90
    Battery Life (CIPA)325 shots per charge720 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 126 x 85 x 65 mm
    (5.0 x 3.3 x 2.6 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 465 g (16.4 oz) 800 g (28.2 oz)
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