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Fujifilm X-S10 vs Pentax K-S1

The Fujifilm X-S10 and the Pentax K-S1 are two digital cameras that were revealed to the public, respectively, in October 2020 and August 2014. The X-S10 is a mirrorless interchangeable lens camera, while the K-S1 is a DSLR. Both cameras are equipped with an APS-C sensor. The Fujifilm has a resolution of 26 megapixels, whereas the Pentax provides 20 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-S1
Fujifilm X-S10   Pentax K-S1
Mirrorless system camera Digital single lens reflex
Fujifilm X mount lenses Pentax K mount lenses
26 MP – APS-C sensor 20 MP – APS-C sensor
4K/30p Video 1080/30p Video
ISO 160-12,800 (80 - 51,200) ISO 100-51,200
Electronic viewfinder (2360k dots) Optical viewfinder
3.0" LCD – 1040k dots 3.0" LCD – 921k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
8 shutter flaps per second 5.4 shutter flaps per second
In-body stabilizationIn-body stabilization
325 shots per battery charge410 shots per battery charge
126 x 85 x 65 mm, 465 g 121 x 93 x 70 mm, 558 g
logo
Check X-S10 price at
amazon.com
logo
Check K-S1 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-S1? 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.

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Body comparison

An illustration of the physical size and weight of the Fujifilm X-S10 and the Pentax K-S1 is provided 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 width, height and depth measures are rounded to the nearest millimeter.

The K-S1 can be obtained in four different colors (black, grey, orange, white), while the X-S10 is only available in black.

Size Fujifilm X-S10 vs Pentax K-S1
Compare X-S10 versus K-S1 top
Comparison X-S10 or K-S1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-S1 is somewhat larger (5 percent) than the Fujifilm X-S10. Moreover, the K-S1 is markedly heavier (20 percent) than the X-S10. In this context, it is worth noting that neither the X-S10 nor the K-S1 are weather-sealed.

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 Fujifilm NP-W126S battery, while the K-S1 can take 410 images on a single charge of its Pentax D-LI109 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 following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

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Body Specifications
  empty 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-S1 121 mm 93 mm 70 mm 558 g 410 n Aug 2014 749ebay.com
3.
 
Fujifilm X-A7 119 mm 68 mm 41 mm 320 g 440 n Sep 2019 499ebay.com
4.
 
Fujifilm X-E3 121 mm 74 mm 43 mm 337 g 350 n Sep 2017 899ebay.com
5.
 
Fujifilm X-E4 121 mm 73 mm 33 mm 364 g 380 n Jan 2021 849 amazon.com
6.
 
Fujifilm X-S20 128 mm 85 mm 65 mm 491 g 750 n May 2023 1,299 amazon.com
7.
 
Fujifilm X-T20 118 mm 83 mm 41 mm 383 g 350 n Jan 2017 899ebay.com
8.
 
Fujifilm X-T30 118 mm 83 mm 47 mm 383 g 380 n Feb 2019 899ebay.com
9.
 
Fujifilm X-T30 II 118 mm 83 mm 47 mm 383 g 380 n Sep 2021 899 amazon.com
10.
 
Fujifilm X-T100 121 mm 83 mm 47 mm 448 g 430 n May 2018 599ebay.com
11.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799ebay.com
12.
 
Nikon D5500 124 mm 97 mm 70 mm 470 g 820 n Jan 2015 899ebay.com
13.
 
Pentax K-500 130 mm 97 mm 71 mm 646 g 710 n Jun 2013 549ebay.com
14.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 749ebay.com
15.
 
Ricoh GR III 109 mm 62 mm 33 mm 257 g 200 n Feb 2019 899 amazon.com
16.
 
Sony A68 143 mm 104 mm 81 mm 610 g 540 n Nov 2015 699ebay.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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The K-S1 was launched at a somewhat lower price (by 25 percent) than the X-S10, which makes it more attractive for photographers on a tight budget. 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.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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.

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-S1 sensor measures

While the two cameras under review share the same sensor size, the X-S10 offers a higher resolution of 26 megapixels, compared with 20 MP of the K-S1. This megapixels advantage translates into a 14 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 4.28μm for the K-S1). In this context, it should be noted, however, that the X-S10 is much more recent (by 6 years and 1 month) than the K-S1, 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 resolution advantage of the Fujifilm X-S10 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the X-S10 for good quality output (200 dots per inch) amounts to 31.2 x 20.8 inches or 79.2 x 52.8 cm, for very good quality (250 dpi) 25 x 16.6 inches or 63.4 x 42.3 cm, and for excellent quality (300 dpi) 20.8 x 13.9 inches or 52.8 x 35.2 cm. The corresponding values for the Pentax K-S1 are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.

The X-S10 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

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-S1 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-S1 uses a CMOS imager. The X-S10 uses Fujifilm's X-Trans layout of photosites, while the K-S1 employs the more common Bayer array.

X-S10 versus K-S1 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The 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
  empty 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-S1 APS-C 20.0 5472 36481080/30p23.513.0106178
3.
 
Fujifilm X-A7 APS-C 24.0 6000 40004K/30p24.113.6195584
4.
 
Fujifilm X-E3 APS-C 24.0 6000 40004K/30p23.913.3176482
5.
 
Fujifilm X-E4 APS-C 26.0 6240 41604K/30p24.213.7208585
6.
 
Fujifilm X-S20 APS-C 26.0 6240 41604K/60p24.314.0231586
7.
 
Fujifilm X-T20 APS-C 24.0 6000 40004K/30p23.913.2170481
8.
 
Fujifilm X-T30 APS-C 26.0 6240 41604K/30p24.113.5189583
9.
 
Fujifilm X-T30 II APS-C 26.0 6240 41604K/30p24.213.8214485
10.
 
Fujifilm X-T100 APS-C 24.0 6000 40004K/15p24.013.4182983
11.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
12.
 
Nikon D5500 APS-C 24.0 6000 40001080/60p24.114.0143884
13.
 
Pentax K-500 APS-C 16.1 4928 32641080/30p23.713.1108779
14.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p23.612.9151479
15.
 
Ricoh GR III APS-C 24.0 6000 40001080/60p24.113.5189783
16.
 
Sony A68 APS-C 24.0 6000 40001080/60i24.113.570179
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 are equipped with sensors that have a sufficiently high read-out speed for moving images, but the X-S10 provides a higher video resolution than the K-S1. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/30p.

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Feature comparison

Apart from 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-S1 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-S1 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 table below summarizes some of the other core capabilities of the Fujifilm X-S10 and Pentax K-S1 in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty 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-S1optical n3.0 / 921 fixed n 1/6000s 5.4/s Y Y
3.
 
Fujifilm X-A7none n3.5 / 2760 swivel Y 1/4000s 6.0/s Y n
4.
 
Fujifilm X-E32360 n3.0 / 1040 fixed Y 1/4000s 8.0/s n n
5.
 
Fujifilm X-E42360 n3.0 / 1620 tilting Y 1/4000s 8.0/s n n
6.
 
Fujifilm X-S202360 n3.0 / 1840 swivel Y 1/4000s 8.0/s Y Y
7.
 
Fujifilm X-T202360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y n
8.
 
Fujifilm X-T302360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y n
9.
 
Fujifilm X-T30 II2360 n3.0 / 1620 tilting Y 1/4000s 8.0/s Y n
10.
 
Fujifilm X-T1002360 n3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
11.
 
Nikon D5300optical n3.2 / 1037 swivel n 1/4000s 5.0/s Y n
12.
 
Nikon D5500optical n3.2 / 1037 swivel Y 1/4000s 5.0/s Y n
13.
 
Pentax K-500optical n3.0 / 921 fixed n 1/6000s 6.0/s Y Y
14.
 
Pentax K-S2optical n3.0 / 921 swivel n 1/6000s 5.4/s Y Y
15.
 
Ricoh GR IIIoptional n3.0 / 1037 fixed Y 1/4000s 4.0/s n Y
16.
 
Sony A681440 Y2.7 / 460 tilting n 1/4000s 8.0/s Y Y
17.
 
Sony A64002359 n3.0 / 922 tilting Y 1/4000s 11.0/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The X-S10 has a touchscreen, while the K-S1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

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-S1 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 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.

Concerning the storage of imaging data, both the X-S10 and the K-S1 write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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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-S1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty 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-S1Ystereo / mono--micro2.0---
3.
 
Fujifilm X-A7Ystereo / monoY-micro2.0Y-Y
4.
 
Fujifilm X-E3Ystereo / monoY-micro2.0Y-Y
5.
 
Fujifilm X-E4Ystereo / monoY-micro3.2Y-Y
6.
 
Fujifilm X-S20Ystereo / monoYYmicro3.2Y-Y
7.
 
Fujifilm X-T20Ystereo / monoY-micro2.0Y--
8.
 
Fujifilm X-T30Ystereo / monoY-micro3.1Y-Y
9.
 
Fujifilm X-T30 IIYstereo / monoY-micro3.2Y-Y
10.
 
Fujifilm X-T100Ystereo / monoY-micro2.0Y-Y
11.
 
Nikon D5300Ystereo / monoY-mini2.0Y--
12.
 
Nikon D5500Ystereo / monoY-mini2.0Y--
13.
 
Pentax K-500Ymono / mono---2.0---
14.
 
Pentax K-S2Ymono / monoY-micro2.0YY-
15.
 
Ricoh GR IIIYstereo / mono---3.0Y-Y
16.
 
Sony A68Ystereo / monoY-micro2.0---
17.
 
Sony A6400Ystereo / monoY-micro2.0YYY

It is notable that the X-S10 has a microphone port, which is missing on the K-S1. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

The X-S10 is a recent model that features in the current product line-up of Fujifilm. In contrast, the K-S1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the K-S1 was succeeded by the Pentax K-S2. Further information on the features and operation of the X-S10 and K-S1 can be found, respectively, in the Fujifilm X-S10 Manual (free pdf) or the online Pentax K-S1 Manual.

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Review summary

So how do things add up? Is the Fujifilm X-S10 better than the Pentax K-S1 or vice versa? The listing below highlights the relative strengths of the two models.

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Advantages of the Fujifilm X-S10:

  • More detail: Offers more megapixels (26 vs 20MP) with a 14% higher linear resolution.
  • 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.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
  • 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.
  • Faster burst: Shoots at higher frequency (8 vs 5.4 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Less heavy: Is lighter (by 93g or 17 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.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • 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 6 years and 1 month of technical progress since the K-S1 launch.

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Reasons to prefer the Pentax K-S1:

  • 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).
  • Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/4000s) to freeze action.
  • Longer lasting: Gets more shots (410 versus 325) out of a single battery charge.
  • More affordable: Was released into a lower priced segment (25 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in August 2014).

If the number of relative strengths (bullet points above) is taken as a guide, the X-S10 is the clear winner of the match-up (19 : 6 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.

X-S10 19:06 K-S1

How about other alternatives? Do the specifications of the Fujifilm X-S10 and the Pentax K-S1 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the X-S10 or the K-S1. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

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.

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Expert Camera Reviews
  empty  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-S14/5......4.5/54/5 Aug 2014 749ebay.com
3.
 
Fujifilm X-A73/5..3.5/581/1004/53.5/5 Sep 2019 499ebay.com
4.
 
Fujifilm X-E34.5/5+4.5/584/1004.5/54.5/5 Sep 2017 899ebay.com
5.
 
Fujifilm X-E44/5..4/5..4.5/54/5 Jan 2021 849 amazon.com
6.
 
Fujifilm X-S205/5+ +5/586/100..4.5/5 May 2023 1,299 amazon.com
7.
 
Fujifilm X-T205/5+ +5/582/1005/54.5/5 Jan 2017 899ebay.com
8.
 
Fujifilm X-T305/5+ +5/584/1004.5/54.5/5 Feb 2019 899ebay.com
9.
 
Fujifilm X-T30 II5/5..4/5..4.5/54.5/5 Sep 2021 899 amazon.com
10.
 
Fujifilm X-T1004/5+4.5/579/1004/54.5/5 May 2018 599ebay.com
11.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 799ebay.com
12.
 
Nikon D55005/5+..79/1004.5/54.5/5 Jan 2015 899ebay.com
13.
 
Pentax K-500........4.5/54.5/5 Jun 2013 549ebay.com
14.
 
Pentax K-S24.5/5......5/54.5/5 Feb 2015 749ebay.com
15.
 
Ricoh GR III4/5..3.5/581/1004/5.. Feb 2019 899 amazon.com
16.
 
Sony A683/5......4/54/5 Nov 2015 699ebay.com
17.
 
Sony A64004/5+4/585/1004.5/54/5 Jan 2019 899 amazon.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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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-S1 offers at
ebay.com

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.

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    Specifications: Fujifilm X-S10 vs Pentax K-S1

    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-S1
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Fujifilm X mount lenses Pentax K mount lenses
    Launch Date October 2020 August 2014
    Launch Price USD 999 USD 749
    Sensor Specs Fujifilm X-S10 Pentax K-S1
    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 20 Megapixels
    Image Resolution 6240 x 4160 pixels 5472 x 3648 pixels
    Pixel Pitch 3.76 μm 4.28 μm
    Pixel Density 7.08 MP/cm2 5.45 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 1080/30p 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 MII
    DXO Sensor Quality (score) .. 78
    DXO Color Depth (bits) .. 23.5
    DXO Dynamic Range (EV) .. 13.0
    DXO Low Light (ISO) .. 1061
    Screen Specs Fujifilm X-S10 Pentax K-S1
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.62x 0.63x
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 921k dots
    LCD Attachment Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Fujifilm X-S10 Pentax K-S1
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/6000s
    Continuous Shooting 8 shutter flaps/s 5.4 shutter flaps/s
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Fujifilm X-S10 Pentax K-S1
    External Flash Hotshoe Hotshoe
    USB Connector USB 3.2 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Fujifilm X-S10 Pentax K-S1
    Battery Type Fujifilm NP-W126S Pentax D-LI109
    Battery Life (CIPA)325 shots per charge410 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)
    121 x 93 x 70 mm
    (4.8 x 3.7 x 2.8 in)
    Camera Weight 465 g (16.4 oz) 558 g (19.7 oz)
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