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Pentax K-3 II vs Sony RX100 V

The Pentax K-3 II and the Sony Cyber-shot DSC-RX100 V are two digital cameras that were officially introduced, respectively, in April 2015 and October 2016. The K-3 II is a DSLR, while the RX100 V is a fixed lens compact. The cameras are based on an APS-C (K-3 II) and an one-inch (RX100 V) sensor. The Pentax has a resolution of 24.1 megapixels, whereas the Sony provides 20 MP.

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

Headline Specifications
Pentax K-3 II
versus
Sony RX100 V
Pentax K-3 II   Sony RX100 V
Digital single lens reflex Fixed lens compact camera
Pentax K mount lenses 24-70mm f/1.8-2.8
24.1 MP, APS-C Sensor 20 MP, 1" Sensor
1080/60i Video 4K/30p Video
ISO 100-51,200 ISO 125-12,800 (80 - 25,600)
Optical viewfinder Electronic viewfinder (2359k dots)
3.2 LCD, 1037k dots 3.0 LCD, 1229k dots
Fixed screen (not touch-sensitive) Tilting screen (not touch-sensitive)
8.3 shutter flaps per second 24 shutter flaps per second
In-body stabilizationLens-based stabilization
Weathersealed bodynot weather sealed
720 shots per battery charge220 shots per battery charge
131 x 100 x 77 mm, 800 g 102 x 58 x 41 mm, 299 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-3 II and the Sony Cyber-shot DSC-RX100 V? 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 Pentax K-3 II and the Sony RX100 V are illustrated 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 size dimensions are rounded to the nearest millimeter.

The K-3 II can be obtained in two different colors (black, silver), while the RX100 V is only available in black.

Size Pentax K-3 II vs Sony RX100 V
Compare K-3 II versus RX100 V top
Comparison K-3 II or RX100 V rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 V is considerably smaller (55 percent) than the Pentax K-3 II. It is worth mentioning in this context that the K-3 II is splash and dust resistant, while the RX100 V does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 V has a lens built in, whereas the K-3 II is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

Concerning battery life, the K-3 II gets 720 shots out of its D-LI90 battery, while the RX100 V can take 220 images on a single charge of its NP-BX1 power pack. The power pack in the RX100 V can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.

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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.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099i
2.
 
Sony RX100 V 102 mm 58 mm 41 mm 299 g 220 n Oct 2016 999 i
3.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199i
4.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199i
5.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
6.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 i
7.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
8.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
9.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 749 i
10.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
11.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 1,099i
12.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
13.
 
Sony RX100 VII 102 mm 58 mm 43 mm 302 g 260 n Jul 2019 1,199 i
14.
 
Sony RX100 VI 102 mm 58 mm 43 mm 301 g 240 n Jun 2018 1,199i
15.
 
Sony RX100 IV 102 mm 58 mm 41 mm 298 g 280 n Jun 2015 999i
16.
 
Sony RX100 III 102 mm 58 mm 41 mm 290 g 320 n May 2014 799i
17.
 
Sony RX100 II 102 mm 58 mm 38 mm 281 g 350 n Jun 2013 749i
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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The RX100 V was launched at a lower price than the K-3 II, despite having a lens built in. 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 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax K-3 II features an APS-C sensor and the Sony RX100 V an one-inch sensor. The sensor area in the RX100 V is 68 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Pentax K-3 II and Sony RX100 V sensor measures

With 24.1MP, the K-3 II offers a higher resolution than the RX100 V (20MP), but the K-3 II nevertheless has larger individual pixels (pixel pitch of 3.90μm versus 2.41μm for the RX100 V) due to its larger sensor. However, the RX100 V is a somewhat more recent model (by 1 year and 5 months) than the K-3 II, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the K-3 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-3 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 II for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Sony RX100 V 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 RX100 V, 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 Pentax K-3 II has a native sensitivity range from ISO 100 to ISO 51200. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 V are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 80-25600.

K-3 II versus RX100 V MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the K-3 II has a notably higher overall DXO score than the RX100 V (overall score 10 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.8 bits higher color depth, 1.2 EV in additional dynamic range, and 0.9 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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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.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
2.
 
Sony RX100 V 1-inch 20.0 5472 36484K/30p22.812.458670
3.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
4.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
5.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
6.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p........
7.
 
Pentax KP APS-C 24.1 6016 40001080/60i........
8.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........
9.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p........
10.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
11.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
12.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
13.
 
Sony RX100 VII 1-inch 20.0 5472 36484K/30p21.812.441863
14.
 
Sony RX100 VI 1-inch 20.0 5472 36484K/30p........
15.
 
Sony RX100 IV 1-inch 20.0 5472 36484K/30p22.812.659170
16.
 
Sony RX100 III 1-inch 20.0 5472 36481080/60p22.412.349567
17.
 
Sony RX100 II 1-inch 20.0 5472 36481080/60p22.512.448367

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 RX100 V provides a better video resolution than the K-3 II. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the RX100 V has an electronic viewfinder (2359k 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 RX100 V (0.63x vs 0.59x), 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-3 II and Sony RX100 V 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
Specifications
(inch/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-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3 n Y
2.
 
Sony RX100 V2359 n3.0 / 1229 tilting n 1/2000s 24.0 Y Y
3.
 
Canon 80Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0 Y n
4.
 
Nikon D7200optical Y3.2 / 1229 fixed n 1/8000s 6.0 Y n
5.
 
Panasonic GX82360 n3.0 / 1040 swivel Y 1/8000s 10.0 n Y
6.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0 n Y
7.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0 Y Y
8.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0 Y Y
9.
 
Pentax K-S2optical n3.0 / 921 swivel n 1/6000s 5.4 Y Y
10.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3 Y Y
11.
 
Pentax K-5 IIoptical Y3.0 / 921 fixed n 1/8000s 7.0 Y Y
12.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0 Y Y
13.
 
Sony RX100 VII2359 n3.0 / 921 tilting Y 1/2000s 90.0 Y Y
14.
 
Sony RX100 VI2359 n3.0 / 1229 tilting Y 1/2000s 24.0 Y Y
15.
 
Sony RX100 IV2359 n3.0 / 1228 tilting n 1/2000s 16.0 Y Y
16.
 
Sony RX100 III1440 n3.0 / 1229 tilting n 1/2000s 10.0 Y Y
17.
 
Sony RX100 IIoptional n3.0 / 1229 tilting n 1/2000s 10.0 Y Y

One feature that is present on the K-3 II, but is missing on the RX100 V 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 RX100 V has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking 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 RX100 V 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-3 II 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 K-3 II writes its imaging data to SDXC cards, while the RX100 V uses SDXC or Memory Stick PRO Duo cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the RX100 V 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 Pentax K-3 II and Sony Cyber-shot DSC-RX100 V 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.
 
Pentax K-3 IIYmono / monoYYmini3.0---
2.
 
Sony RX100 V-stereo / mono--micro2.0YY-
3.
 
Canon 80DYstereo / monoYYmini2.0YY-
4.
 
Nikon D7200Ystereo / monoYYmini2.0YY-
5.
 
Panasonic GX8Ystereo / monoY-micro2.0YY-
6.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
7.
 
Pentax KPYstereo / monoY--2.0Y--
8.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
9.
 
Pentax K-S2Ymono / monoY-micro2.0YY-
10.
 
Pentax K-3Ymono / monoYYmini3.0---
11.
 
Pentax K-5 IIYstereo / monoY-mini2.0---
12.
 
Pentax K-5Ystereo / monoY-mini2.0---
13.
 
Sony RX100 VII-stereo / monoY-micro2.0YYY
14.
 
Sony RX100 VI-stereo / mono--micro2.0YYY
15.
 
Sony RX100 IV-stereo / mono--micro2.0YY-
16.
 
Sony RX100 III-stereo / mono--micro2.0YY-
17.
 
Sony RX100 IIYstereo / mono--micro2.0YY-

It is notable that the K-3 II has a hotshoe, while the RX100 V does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Pentax K-3 II (unlike the RX100 V) 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 RX100 V is a recent model that features in the current product line-up of Sony. 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 two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Sony websites.

Review summary

So what is the bottom line? Is there a clear favorite between the Pentax K-3 II and the Sony RX100 V? Which camera is better? The listing below highlights the relative strengths of the two models.

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Advantages of the Pentax K-3 II:

  • More detail: Offers more megapixels (24.1 vs 20MP) with a 10% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Scores markedly higher (10 points) in the DXO overall assessment.
  • More dynamic range: Captures a larger spectrum of light and dark details (1.2 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (0.9 stops ISO advantage).
  • 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.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.59x).
  • 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.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (720 versus 220) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been on the market for longer (launched in April 2015).

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Reasons to prefer the Sony Cyber-shot DSC-RX100 V:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1037k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (24 vs 8.3 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Ready to shoot: Comes with an integrated lens, while the K-3 II requires a separate lens.
  • More compact: Is smaller (102x58mm vs 131x100mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the K-3 II).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Was introduced somewhat (1 year and 5 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the K-3 II is the clear winner of the match-up (23 : 17 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.

K-3 II 23:17 RX100 V

How about other alternatives? Do the specifications of the Pentax K-3 II and the Sony RX100 V place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom 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-3 II or the RX100 V 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 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.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099i
2.
 
Sony RX100 V4.5/5+ +..83/1004/54.5/5 Oct 2016 999 i
3.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 1,199i
4.
 
Nikon D72004/5+ +..84/1004.5/54.5/5 Mar 2015 1,199i
5.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 1,199i
6.
 
Pentax K-3 III............ Mar 2021 1,999 i
7.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099 i
8.
 
Pentax K-704.5/5....79/1004.5/54.5/5 Jun 2016 649 i
9.
 
Pentax K-S24.5/5......5/54.5/5 Feb 2015 749 i
10.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299i
11.
 
Pentax K-5 II5/5....80/1005/54.5/5 Sep 2012 1,099i
12.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099i
13.
 
Sony RX100 VII4.5/5..4/5..4/55/5 Jul 2019 1,199 i
14.
 
Sony RX100 VI4.5/5+ +..83/1004/54.5/5 Jun 2018 1,199i
15.
 
Sony RX100 IV4.5/5+ +..85/1004/54.5/5 Jun 2015 999i
16.
 
Sony RX100 III5/5+ +..82/1004.5/55/5 May 2014 799i
17.
 
Sony RX100 II5/5+ +..79/1004.5/54.5/5 Jun 2013 749i
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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Pentax K-3 II:
Check Ebay offers
Sony RX100 V:
Check Amazon price

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 a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Pentax K-3 II vs Sony RX100 V

    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-3 II Sony RX100 V
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Pentax K mount lenses 24-70mm f/1.8-2.8
    Launch Date April 2015 October 2016
    Launch Price USD 1,099 USD 999
    Sensor Specs Pentax K-3 II Sony RX100 V
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor 1" Sensor
    Sensor Size 23.5 x 15.6 mm 13.2 x 8.8 mm
    Sensor Area 366.6 mm2 116.16 mm2
    Sensor Diagonal 28.2 mm 15.9 mm
    Crop Factor 1.5x 2.7x
    Sensor Resolution 24.1 Megapixels 20 Megapixels
    Image Resolution 6016 x 4000 pixels 5472 x 3648 pixels
    Pixel Pitch 3.90 μm 2.41 μm
    Pixel Density 6.56 MP/cm2 17.18 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60i Video 4K/30p Video
    ISO Setting 100 - 51,200 ISO 125 - 12,800 ISO
    ISO Boost no Enhancement 80 - 25,600 ISO
    Image Processor PRIME III BIONZ X
    DXO Sensor Quality (score) 80 70
    DXO Color Depth (bits) 23.6 22.8
    DXO Dynamic Range (EV) 13.6 12.4
    DXO Low Light (ISO) 1106 586
    Screen Specs Pentax K-3 II Sony RX100 V
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.63x 0.59x
    Viewfinder Resolution 2359k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1037k dots 1229k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Pentax K-3 II Sony RX100 V
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/2000s
    Continuous Shooting 8.3 shutter flaps/s 24 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens-based stabilization
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Pentax K-3 II Sony RX100 V
    External Flash Hotshoe no Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Geotagging GPS built-in no internal GPS
    Body Specs Pentax K-3 II Sony RX100 V
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type D-LI90 NP-BX1
    Battery Life (CIPA)720 shots per charge220 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    102 x 58 x 41 mm
    (4.0 x 2.3 x 1.6 in)
    Camera Weight 800 g (28.2 oz) 299 g (10.5 oz)

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