Ur-Leica Tamron Camera Ranking
Leica 1600mm Soligor Shutter count
A potelyt.com – Photography & Imaging Resources
ad
PW

Pentax K-S2 vs Sony A7R IV

The Pentax K-S2 and the Sony Alpha A7R IV are two digital cameras that were officially introduced, respectively, in February 2015 and July 2019. The K-S2 is a DSLR, while the A7R IV is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (K-S2) and a full frame (A7R IV) sensor. The Pentax has a resolution of 20 megapixels, whereas the Sony provides 60.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Pentax K-S2 versus Sony A7R IV
Pentax K-S2 Sony A7R IV
Digital single lens reflex Mirrorless system camera
Pentax K mount lenses Sony E mount lenses
20 MP, APS-C Sensor 60.2 MP, Full Frame Sensor
1080/30p Video 4K/30p Video
ISO 100-51,200 ISO 100-32,000 (50 - 102,400)
Optical viewfinder Electronic viewfinder (5760k dots)
3.0 LCD, 921k dots 3.0 LCD, 1440k dots
Swivel screen (not touch-sensitive) Tilting touchscreen
5.4 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
410 shots per battery charge670 shots per battery charge
123 x 91 x 73 mm, 678 g 129 x 96 x 78 mm, 665 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-S2 and the Sony Alpha A7R IV? 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 side-by-side display below illustrates the physical size and weight of the Pentax K-S2 and the Sony A7R IV. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.

The K-S2 can be obtained in six different colors (black, grey, pink, orange, green, white), while the A7R IV is only available in black.

Size Pentax K-S2 vs Sony A7R IV
Compare K-S2 versus A7R IV top
Comparison K-S2 or A7R IV rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R IV is notably larger (11 percent) than the Pentax K-S2. However, the A7R IV is slightly lighter (2 percent) than the K-S2. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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 K-S2 gets 410 shots out of its D-LI109 battery, while the A7R IV can take 670 images on a single charge of its NP-FZ100 power pack. The power pack in the A7R IV can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

scroll hint
Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 749 i
2.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499 i
3.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
4.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
5.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
6.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099 i
7.
 
Pentax K-S1 121 mm 93 mm 70 mm 558 g 410 n Aug 2014 749i
8.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
9.
 
Pentax K-30 130 mm 97 mm 71 mm 650 g 410 Y May 2012 849i
10.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
11.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 i
12.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
13.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499i
14.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199i
15.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999i
16.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999i
17.
 
Sony A77 II 143 mm 104 mm 81 mm 647 g 480 Y May 2014 1,199 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The K-S2 was launched at a markedly lower price (by 79 percent) than the A7R IV, 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.

ad

Sensor comparison

The size of the imaging sensor is a crucial determinant 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Pentax K-S2 features an APS-C sensor and the Sony A7R IV a full frame sensor. The sensor area in the A7R IV is 132 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Pentax K-S2 and Sony A7R IV sensor measures

With 60.2MP, the A7R IV offers a higher resolution than the K-S2 (20MP), but the A7R IV has smaller individual pixels (pixel pitch of 3.76μm versus 4.28μm for the K-S2). Yet, the A7R IV is a much more recent model (by 4 years and 5 months) than the K-S2, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. 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 Sony A7R IV implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R IV for good quality output (200 dots per inch) amounts to 47.5 x 31.7 inches or 120.7 x 80.5 cm, for very good quality (250 dpi) 38 x 25.3 inches or 96.6 x 64.4 cm, and for excellent quality (300 dpi) 31.7 x 21.1 inches or 80.5 x 53.6 cm. The corresponding values for the Pentax K-S2 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 A7R IV has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the K-S2, the A7R IV has the capacity to capture high quality composite images (241MP) 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 Pentax K-S2 has a native sensitivity range from ISO 100 to ISO 51200. The corresponding ISO settings for the Sony Alpha A7R IV are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.

K-S2 versus A7R IV MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

scroll hint
Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p........
2.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.8334499
3.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
4.
 
Pentax KP APS-C 24.1 6016 40001080/60i........
5.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........
6.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
7.
 
Pentax K-S1 APS-C 20.0 5472 36481080/30p23.513.0106178
8.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
9.
 
Pentax K-30 APS-C 16.1 4928 32641080/30p23.713.0112979
10.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
11.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.9252086
12.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
13.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
14.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
15.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
16.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
17.
 
Sony A77 II APS-C 24.0 6000 40001080/60p........

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A7R IV provides a better video resolution than the K-S2. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/30p.

ad

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7R IV has an electronic viewfinder (5760k dots), while the K-S2 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 A7R IV has a higher magnification than the one of the K-S2 (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 Pentax K-S2 and Sony A7R IV in connection with corresponding information for a sample of similar cameras.

scroll hint
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.
 
Pentax K-S2optical n 3.0 921 swivel n 1/6000s 5.4 Y Y
2.
 
Sony A7R IV5760 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
3.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
4.
 
Pentax KPoptical n 3.0 921 tilting n 1/6000s 7.0 Y Y
5.
 
Pentax K-70optical n 3.0 921 swivel n 1/6000s 6.0 Y Y
6.
 
Pentax K-3 IIoptical Y 3.2 1037 fixed n 1/8000s 8.3 n Y
7.
 
Pentax K-S1optical n 3.0 921 fixed n 1/6000s 5.4 Y Y
8.
 
Pentax K-3optical Y 3.2 1037 fixed n 1/8000s 8.3 Y Y
9.
 
Pentax K-30optical n 3.0 921 fixed n 1/6000s 6.0 Y Y
10.
 
Pentax K-5optical Y 3.0 921 fixed n 1/8000s 7.0 Y Y
11.
 
Sony A7S III9440 n 3.0 1440 swivel Y 1/8000s 10.0 n Y
12.
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
13.
 
Sony A93686 n 3.0 1440 tilting Y 1/8000s 20.0 n Y
14.
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
15.
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
16.
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y
17.
 
Sony A77 II2359 Y 3.0 1229 full-flex n 1/8000s 12.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The K-S2 has one, while the A7R IV does not. While the built-in flash of the K-S2 is not very powerful, it can at times be useful as a fill-in light.

The K-S2 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 A7R IV 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 A7R IV is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Pentax K-S2 and the Sony A7R IV 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 K-S2 and the A7R IV write their files to SDXC cards. The A7R IV features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-S2 only has one slot. The A7R IV supports UHS-II cards (on both slots), while the K-S2 can use UHS-I cards.

ad

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 Pentax K-S2 and Sony Alpha A7R IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
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.
 
Pentax K-S2YmonomonoY-micro2.0YY-
2.
 
Sony A7R IVYstereomonoYYmicro3.1YYY
3.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
4.
 
Pentax KPYstereomonoY--2.0Y--
5.
 
Pentax K-70YstereomonoY-mini2.0Y--
6.
 
Pentax K-3 IIYmonomonoYYmini3.0---
7.
 
Pentax K-S1Ystereomono--micro2.0---
8.
 
Pentax K-3YmonomonoYYmini3.0---
9.
 
Pentax K-30Ymonomono---2.0---
10.
 
Pentax K-5YstereomonoY-mini2.0---
11.
 
Sony A7S IIIYstereomonoYYfull3.2Y-Y
12.
 
Sony A7R IIIYstereomonoYYmicro3.1YYY
13.
 
Sony A9YstereomonoYYmicro2.0YYY
14.
 
Sony A7R IIYstereomonoYYmicro2.0YY-
15.
 
Sony A7S IIYstereomonoYYmicro2.0YY-
16.
 
Sony A7 IIYstereomonoYYmicro2.0YY-
17.
 
Sony A77 IIYstereomonoY-mini2.0YY-

It is notable that the A7R IV has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The K-S2 lacks such a headphone port.

Studio photographers will appreciate that the Sony A7R IV (unlike the K-S2) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the K-S2 and the A7R IV are recent models that are part of the current product line-up. The K-S2 replaced the earlier Pentax K-S1, while the A7R IV followed on from the Sony A7R III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Sony websites.

ad

Review summary

So how do things add up? Is there a clear favorite between the Pentax K-S2 and the Sony A7R IV? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

ilogo

Reasons to prefer the Pentax K-S2:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (79 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2015).

ilogo

Advantages of the Sony Alpha A7R IV:

  • More detail: Has more megapixels (60.2 vs 20MP), which boosts linear resolution by 74%.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • 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).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 921k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/6000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 5.4 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Longer lasting: Gets more shots (670 versus 410) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • 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-S2 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the A7R IV is the clear winner of the contest (25 : 6 points). 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.

K-S2 06:25 A7R IV

How about other alternatives? Do the specifications of the Pentax K-S2 and the Sony A7R IV place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the K-S2 or the A7R IV perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

scroll hint
Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax K-S24.5/5....5/54.5/5 Feb 2015 749 i
2.
 
Sony A7R IV5/5+91/1004.5/55/5 Jul 2019 3,499 i
3.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
4.
 
Pentax KP4/5..82/1005/54.5/5 Jan 2017 1,099 i
5.
 
Pentax K-704.5/5..79/1004.5/54.5/5 Jun 2016 649 i
6.
 
Pentax K-3 II4.5/5....5/55/5 Apr 2015 1,099 i
7.
 
Pentax K-S14/5....4.5/54/5 Aug 2014 749i
8.
 
Pentax K-34/5..83/1005/55/5 Oct 2013 1,299i
9.
 
Pentax K-304/5..78/1004.5/54.5/5 May 2012 849i
10.
 
Pentax K-54/5..83/1005/54.5/5 Sep 2010 1,099i
11.
 
Sony A7S III..+ +91/1004.5/55/5 Jul 2020 3,499 i
12.
 
Sony A7R III..+ +90/1004.5/55/5 Oct 2017 3,199i
13.
 
Sony A95/5+ +89/1005/55/5 Apr 2017 4,499i
14.
 
Sony A7R II5/5+ +90/1005/55/5 Jun 2015 3,199i
15.
 
Sony A7S II5/5+..4.5/55/5 Sep 2015 2,999i
16.
 
Sony A7 II5/5+82/1004.5/55/5 Nov 2014 1,999i
17.
 
Sony A77 II4/5..80/1004.5/55/5 May 2014 1,199 i
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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Pentax K-S2:
Check Amazon price
Sony A7R IV:
Check Amazon price

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.

~
    loader

    Specifications: Pentax K-S2 vs Sony A7R IV

    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 Pentax K-S2 Sony A7R IV
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Pentax K mount lenses Sony E mount lenses
    Launch Date February 2015 July 2019
    Launch Price USD 749 USD 3,499
    Sensor Specs Pentax K-S2 Sony A7R IV
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.5 x 15.6 mm 35.7 x 23.8 mm
    Sensor Area 366.6 mm2 849.66 mm2
    Sensor Diagonal 28.2 mm 42.9 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 20 Megapixels 60.2 Megapixels
    Image Resolution 5472 x 3648 pixels 9504 x 6336 pixels
    Pixel Pitch 4.28 μm 3.76 μm
    Pixel Density 5.45 MP/cm2 7.09 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 1080/30p Video 4K/30p Video
    ISO Setting 100 - 51,200 ISO 100 - 32,000 ISO
    ISO Boost no Enhancement 50 - 102,400 ISO
    Image Processor PRIME MII BIONZ X
    DXO Sensor Quality (score) .. 99
    DXO Color Depth (bits) .. 26.0
    DXO Dynamic Range (EV) .. 14.8
    DXO Low Light (ISO) .. 3344
    Screen Specs Pentax K-S2 Sony A7R IV
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.63x 0.78x
    Viewfinder Resolution 5760k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1440k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Pentax K-S2 Sony A7R IV
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/6000s 1/8000s
    Continuous Shooting 5.4 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I Dual UHS-II
    Connectivity Specs Pentax K-S2 Sony A7R IV
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.1
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Pentax K-S2 Sony A7R IV
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type D-LI109 NP-FZ100
    Battery Life (CIPA)410 shots per charge670 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 123 x 91 x 73 mm
    (4.8 x 3.6 x 2.9 in)
    129 x 96 x 78 mm
    (5.1 x 3.8 x 3.1 in)
    Camera Weight 678 g (23.9 oz) 665 g (23.5 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

    You are here Home  »  CAM-parator  »  Pentax K-S2 vs Sony A7R IV

    Thanks for your vote!

    You rated this page 4 out of 5.


    Rating

    Any additional comment or suggestion for improvement would be welcome.


    If you like it, make sure you share it:

    • Mention this page to your Facebook friends and Twitter followers.
    • Bookmark it in your browser for future reference by pressing "Crtl" + "D".
    • Create a hyperlink by copying the text below into your web-project or discussion forum entry.

    Once again, thanks for taking the time to provide feedback. I appreciate it.