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Panasonic S1R vs Pentax K-S1

The Panasonic Lumix DC-S1R and the Pentax K-S1 are two digital cameras that were revealed to the public, respectively, in February 2019 and August 2014. The S1R is a mirrorless interchangeable lens camera, while the K-S1 is a DSLR. The cameras are based on a full frame (S1R) and an APS-C (K-S1) sensor. The Panasonic has a resolution of 46.7 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
Panasonic S1R versus Pentax K-S1
Panasonic S1R Pentax K-S1
Mirrorless system camera Digital single lens reflex
Leica L mount lenses Pentax K mount lenses
46.7 MP, Full Frame Sensor 20 MP, APS-C Sensor
4K/60p Video 1080/30p Video
ISO 100-25,600 (50 - 51,200) ISO 100-51,200
Electronic viewfinder (5760k dots) Optical viewfinder
3.2 LCD, 2100k dots 3.0 LCD, 921k dots
Fully flexible touchscreen Fixed screen (not touch-sensitive)
9 shutter flaps per second 5.4 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodynot weather sealed
380 shots per battery charge410 shots per battery charge
149 x 110 x 97 mm, 1016 g 121 x 93 x 70 mm, 558 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-S1R 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.

Body comparison

The physical size and weight of the Panasonic S1R and the Pentax K-S1 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 S1R is only available in black.

Size Panasonic S1R vs Pentax K-S1
Compare S1R versus K-S1 top
Comparison S1R 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 considerably smaller (31 percent) than the Panasonic S1R. Moreover, the K-S1 is substantially lighter (45 percent) than the S1R. It is worth mentioning in this context that the S1R is splash and dust resistant, while the K-S1 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 S1R gets 380 shots out of its DMW-BLJ31 battery, while the K-S1 can take 410 images on a single charge of its D-LI109 power pack. The power pack in the S1R can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
 
Panasonic S1R 149 mm 110 mm 97 mm 1016 g 380 Y Feb 2019 3,699 i
2.
 
Pentax K-S1 121 mm 93 mm 70 mm 558 g 410 n Aug 2014 749i
3.
 
Canon R5 138 mm 98 mm 88 mm 738 g 320 Y Jul 2020 3,899 i
4.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
5.
 
Leica SL2 146 mm 107 mm 42 mm 953 g 370 Y Nov 2019 5,999 i
6.
 
Nikon Z7 134 mm 101 mm 67 mm 675 g 330 Y Aug 2018 3,399i
7.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 i
8.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799i
9.
 
Panasonic S1 149 mm 110 mm 97 mm 1017 g 400 Y Feb 2019 2,499 i
10.
 
Panasonic S1H 151 mm 114 mm 110 mm 1052 g 400 Y May 2019 3,999 i
11.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 749 i
12.
 
Pentax K-500 130 mm 97 mm 71 mm 646 g 710 n Jun 2013 549i
13.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
14.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
15.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
16.
 
Sony A68 143 mm 104 mm 81 mm 610 g 540 n Nov 2015 699i
17.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 Y Aug 2009 1,999i
Notes: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The K-S1 was launched at a markedly lower price (by 80 percent) than the S1R, which puts it into a different market segment. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

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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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Panasonic S1R features a full frame sensor and the Pentax K-S1 an APS-C sensor. The sensor area in the K-S1 is 58 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Panasonic S1R and Pentax K-S1 sensor measures

With 46.7MP, the S1R offers a higher resolution than the K-S1 (20MP), but the S1R nevertheless has marginally larger individual pixels (pixel pitch of 4.30μm versus 4.28μm for the K-S1) due to its larger sensor. Moreover, the S1R is a much more recent model (by 4 years and 5 months) than the K-S1, 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 resolution advantage of the Panasonic S1R implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S1R for good quality output (200 dots per inch) amounts to 41.8 x 27.9 inches or 106.3 x 70.9 cm, for very good quality (250 dpi) 33.5 x 22.3 inches or 85 x 56.7 cm, and for excellent quality (300 dpi) 27.9 x 18.6 inches or 70.8 x 47.3 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.

Unlike the K-S1, the S1R has the capacity to capture high quality composite images (187MP) 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 Panasonic Lumix DC-S1R has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-51200. The corresponding ISO settings for the Pentax K-S1 are ISO 100 to ISO 51200 (no boost).

S1R versus K-S1 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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. Of the two cameras under review, the S1R provides substantially higher image quality than the K-S1, with an overall score that is 22 points higher. This advantage is based on 2.9 bits higher color depth, 1.1 EV in additional dynamic range, and 1.7 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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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.
 
Panasonic S1R Full Frame 46.7 8368 55844K/60p26.414.13525100
2.
 
Pentax K-S1 APS-C 20.0 5472 36481080/30p23.513.0106178
3.
 
Canon R5 Full Frame 44.8 8192 54648k/30p25.314.6304295
4.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
5.
 
Leica SL2 Full Frame 46.7 8368 55844K/60p........
6.
 
Nikon Z7 Full Frame 45.4 8256 55044K/30p26.314.6266899
7.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
8.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
9.
 
Panasonic S1 Full Frame 24.0 6000 40004K/60p25.214.5333395
10.
 
Panasonic S1H Full Frame 24.0 6000 40006K/30p........
11.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p........
12.
 
Pentax K-500 APS-C 16.1 4928 32641080/30p23.713.1108779
13.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
14.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
15.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
16.
 
Sony A68 APS-C 24.0 6000 40001080/60i24.113.570179
17.
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the S1R provides a higher video resolution than the K-S1. It can shoot video footage at 4K/60p, 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 variety of features. For example, the S1R has an electronic viewfinder (5760k 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 S1R has a higher magnification than the one of the K-S1 (0.78x vs 0.63x), 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 Panasonic S1R and Pentax K-S1 in connection with corresponding information for a sample of similar cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Panasonic S1R5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y
2.
 
Pentax K-S1optical n 3.0 921 fixed n 1/6000s 5.4 Y Y
3.
 
Canon R55760 Y 3.2 2100 swivel Y 1/8000s 10.0 n Y
4.
 
Canon 5DSoptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
5.
 
Leica SL25760 Y 3.2 2100 fixed Y 1/8000s 10.0 n Y
6.
 
Nikon Z73690 Y 3.2 2100 tilting Y 1/8000s 9.0 n Y
7.
 
Nikon D850optical Y 3.2 2359 tilting Y 1/8000s 9.0 n n
8.
 
Nikon D5300optical n 3.2 1037 swivel n 1/4000s 5.0 Y n
9.
 
Panasonic S15760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y
10.
 
Panasonic S1H5760 Y 3.2 2330 swivel Y 1/8000s 9.0 n Y
11.
 
Pentax K-S2optical n 3.0 921 swivel n 1/6000s 5.4 Y Y
12.
 
Pentax K-500optical n 3.0 921 fixed n 1/6000s 6.0 Y Y
13.
 
Pentax K-3optical Y 3.2 1037 fixed n 1/8000s 8.3 Y Y
14.
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
15.
 
Sony A99 II2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y
16.
 
Sony A681440 Y 2.7 460 tilting n 1/4000s 8.0 Y Y
17.
 
Sony A850optical Y 3.0 922 fixed n 1/8000s 3.0 n Y

One feature that is present on the S1R, but is missing on the K-S1 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

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 S1R 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 Panasonic S1R 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 S1R writes its imaging data to SDHC or XQD cards, while the K-S1 uses SDXC cards. The S1R features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-S1 only has one slot. The S1R supports UHS-II cards (on both slots), while the K-S1 can use UHS-I cards.

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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 Panasonic Lumix DC-S1R 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
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Panasonic S1RYstereomonoYYfull3.1Y-Y
2.
 
Pentax K-S1Ystereomono--micro2.0---
3.
 
Canon R5YmonomonoYYmicro3.2Y-Y
4.
 
Canon 5DSYmonomonoY-mini3.0---
5.
 
Leica SL2YstereomonoYYfull3.1Y-Y
6.
 
Nikon Z7YstereomonoYYmicro3.1Y-Y
7.
 
Nikon D850YstereomonoYYmini3.0YYY
8.
 
Nikon D5300YstereomonoY-mini2.0Y--
9.
 
Panasonic S1YstereomonoYYfull3.1Y-Y
10.
 
Panasonic S1HYstereomonoYYfull3.1Y-Y
11.
 
Pentax K-S2YmonomonoY-micro2.0YY-
12.
 
Pentax K-500Ymonomono---2.0---
13.
 
Pentax K-3YmonomonoYYmini3.0---
14.
 
Sony A7R IIIYstereomonoYYmicro3.1YYY
15.
 
Sony A99 IIYstereomonoYYmicro2.0YYY
16.
 
Sony A68YstereomonoY-micro2.0---
17.
 
Sony A850Y----mini2.0---

It is notable that the S1R 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.

Studio photographers will appreciate that the Panasonic S1R (unlike the K-S1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The S1R is a recent model that features in the current product line-up of Panasonic. 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 two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Pentax websites.

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Review summary

So how do things add up? Is there a clear favorite between the Panasonic S1R and the Pentax K-S1? Which camera is better? The listing below highlights the relative strengths of the two models.

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Advantages of the Panasonic Lumix DC-S1R:

  • More detail: Offers more megapixels (46.7 vs 20MP) with a 53% higher linear resolution.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Scores substantially higher (22 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (2.9 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (1.1 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (1.7 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/60p vs 1080/30p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.63x).
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 921k dots).
  • More flexible LCD: Has a full-flex 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.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/6000s) to freeze action.
  • Faster burst: Shoots at higher frequency (9 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.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 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.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 4 years and 5 months 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.
  • More compact: Is smaller (121x93mm vs 149x110mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 458g or 45 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (80 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 S1R is the clear winner of the match-up (31 : 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.

S1R 31:06 K-S1

How about other alternatives? Do the specifications of the Panasonic S1R 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 S1R 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 where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic S1R4.5/5..89/1004.5/54.5/5 Feb 2019 3,699 i
2.
 
Pentax K-S14/5....4.5/54/5 Aug 2014 749i
3.
 
Canon R54.5/5..91/1004.5/54.5/5 Jul 2020 3,899 i
4.
 
Canon 5DS..+83/1004.5/54.5/5 Feb 2015 3,699 i
5.
 
Leica SL24/5....4.5/54/5 Nov 2019 5,999 i
6.
 
Nikon Z75/5+89/1004.5/55/5 Aug 2018 3,399i
7.
 
Nikon D8504.5/5+ +89/1004.5/55/5 Jul 2017 3,299 i
8.
 
Nikon D53004/5+ +79/1004.5/54.5/5 Oct 2013 799i
9.
 
Panasonic S14.5/5+ +88/1004.5/54/5 Feb 2019 2,499 i
10.
 
Panasonic S1H....90/100.... May 2019 3,999 i
11.
 
Pentax K-S24.5/5....5/54.5/5 Feb 2015 749 i
12.
 
Pentax K-500......4.5/54.5/5 Jun 2013 549i
13.
 
Pentax K-34/5..83/1005/55/5 Oct 2013 1,299i
14.
 
Sony A7R III..+ +90/1004.5/55/5 Oct 2017 3,199i
15.
 
Sony A99 II....85/1004.5/54.5/5 Sep 2016 3,199 i
16.
 
Sony A683/5....4/54/5 Nov 2015 699i
17.
 
Sony A8503/5..75/100..4.5/5 Aug 2009 1,999i
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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Panasonic S1R:
Check Amazon price
Pentax K-S1:
Check Ebay offers

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: Panasonic S1R 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 Panasonic S1R Pentax K-S1
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Leica L mount lenses Pentax K mount lenses
    Launch Date February 2019 August 2014
    Launch Price USD 3,699 USD 749
    Sensor Specs Panasonic S1R Pentax K-S1
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor APS-C Sensor
    Sensor Size 36.0 x 24.0 mm 23.5 x 15.6 mm
    Sensor Area 864 mm2 366.6 mm2
    Sensor Diagonal 43.3 mm 28.2 mm
    Crop Factor 1.0x 1.5x
    Sensor Resolution 46.7 Megapixels 20 Megapixels
    Image Resolution 8368 x 5584 pixels 5472 x 3648 pixels
    Pixel Pitch 4.30 μm 4.28 μm
    Pixel Density 5.41 MP/cm2 5.45 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/60p Video 1080/30p Video
    ISO Setting 100 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost 50 - 51,200 ISO no Enhancement
    Image Processor Venus PRIME MII
    DXO Sensor Quality (score) 100 78
    DXO Color Depth (bits) 26.4 23.5
    DXO Dynamic Range (EV) 14.1 13.0
    DXO Low Light (ISO) 3525 1061
    Screen Specs Panasonic S1R Pentax K-S1
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.78x 0.63x
    Viewfinder Resolution 5760k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 2100k dots 921k dots
    LCD Attachment Fully flexible screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Panasonic S1R Pentax K-S1
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/6000s
    Continuous Shooting 9 shutter flaps/s 5.4 shutter flaps/s
    Electronic Shutterup to 1/8000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC or XQD cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support Dual UHS-II UHS-I
    Connectivity Specs Panasonic S1R Pentax K-S1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.1 USB 2.0
    HDMI Port full HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Panasonic S1R Pentax K-S1
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type DMW-BLJ31 D-LI109
    Battery Life (CIPA)380 shots per charge410 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 149 x 110 x 97 mm
    (5.9 x 4.3 x 3.8 in)
    121 x 93 x 70 mm
    (4.8 x 3.7 x 2.8 in)
    Camera Weight 1016 g (35.8 oz) 558 g (19.7 oz)

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