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Pentax K-1 II vs Ricoh GR III

The Pentax K-1 II and the Ricoh GR III are two digital cameras that were officially introduced, respectively, in February 2018 and February 2019. The K-1 II is a DSLR, while the GR III is a fixed lens compact. The cameras are based on a full frame (K-1 II) and an APS-C (GR III) sensor. The Pentax has a resolution of 36.2 megapixels, whereas the Ricoh provides 24 MP.

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

Headline Specifications
Pentax K-1 II   Ricoh GR III
Pentax K-1 II Ricoh GR III
Digital single lens reflex Fixed lens compact camera
Pentax K mount lenses 28mm f/2.8
36.2 MP, Full Frame Sensor 24 MP, APS-C Sensor
1080/60i Video 1080/60p Video
ISO 100-819200 ISO 100-102400
Optical viewfinder Viewfinder optional
3.2" LCD, 1037k dots 3.0" LCD, 1037k dots
Fully flexible screen (no touchscreen) Fixed touchscreen
4.4 shutter flaps per second 4 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyNot weather sealed
670 shots per battery charge200 shots per battery charge
137 x 110 x 86 mm, 1010 g 109 x 62 x 33 mm, 257 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-1 II and the Ricoh GR III? 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: Pentax K-1 II vs Ricoh GR III

The physical size and weight of the Pentax K-1 II and the Ricoh GR III 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 size dimensions are rounded to the nearest millimeter.

The K-1 II can be obtained in two different colors (black, silver), while the GR III is only available in black.

Size Pentax K-1 II vs Ricoh GR III
Compare K-1 II versus GR III top
Comparison K-1 II or GR III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Ricoh GR III is considerably smaller (55 percent) than the Pentax K-1 II. It is worth mentioning in this context that the K-1 II is splash and dust resistant, while the GR III does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the GR III has a lens built in, whereas the K-1 II is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

The power pack in the GR III 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, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Pentax K-1 II» 5.4 in 4.3 in 3.4 in 35.6 oz 670 Y Feb 2018 1,999 i i Pentax K-1 II
 
Ricoh GR III« 4.3 in 2.4 in 1.3 in 9.1 oz 200 n Feb 2019 899 i i Ricoh GR III
 
Canon R« » 5.5 in 3.9 in 3.3 in 23.3 oz 370 Y Sep 2018 2,299 i i Canon R
 
Fujifilm XF10« » 4.4 in 2.5 in 1.6 in 9.8 oz 330 n Jul 2018 499 i i Fujifilm XF10
 
Nikon Z6« » 5.3 in 4.0 in 2.6 in 23.8 oz 310 Y Aug 2018 1,999 i i Nikon Z6
 
Olympus E-5« » 5.6 in 4.6 in 3.0 in 30.8 oz 750 Y Sep 2010 1,699- i Olympus E-5
 
Panasonic S1« » 5.9 in 4.3 in 3.8 in 35.9 oz 400 Y Feb 2019 2,499 i i Panasonic S1
 
Panasonic S1R« » 5.9 in 4.3 in 3.8 in 35.8 oz 380 Y Feb 2019 3,699 i i Panasonic S1R
 
Panasonic GX9« » 4.9 in 2.8 in 1.9 in 14.4 oz 260 n Feb 2018 849 i i Panasonic GX9
 
Panasonic ZS200« » 4.4 in 2.6 in 1.8 in 12.0 oz 370 n Feb 2018 799 i i Panasonic ZS200
 
Pentax K-1« » 5.4 in 4.3 in 3.4 in 35.6 oz 760 Y Feb 2016 1,799- i Pentax K-1
 
Ricoh GR II« » 4.6 in 2.5 in 1.4 in 8.9 oz 320 n Jun 2015 699 i i Ricoh GR II
 
Ricoh GR« » 4.6 in 2.4 in 1.4 in 8.6 oz 290 n Apr 2013 799- i Ricoh GR
 
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
 
Sony A7R III« » 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199 i i Sony A7R III
 
Sony A99 II« » 5.6 in 4.1 in 3.0 in 29.9 oz 490 Y Sep 2016 3,199 i i Sony A99 II
 
Sony A850« » 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Aug 2009 1,999- i Sony A850
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The GR III was launched at a lower price than the K-1 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Pentax K-1 II vs Ricoh GR III

The size of the sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax K-1 II features a full frame sensor and the Ricoh GR III an APS-C sensor. The sensor area in the GR III is 57 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.

In terms of underlying technology, both cameras are build around CMOS sensors.

Pentax K-1 II and Ricoh GR III sensor measures

With 36.2MP, the K-1 II offers a higher resolution than the GR III (24MP), but the K-1 II nevertheless has larger individual pixels (pixel pitch of 4.88μm versus 3.91μm for the GR III) due to its larger sensor. However, the GR III is a somewhat more recent model (by 11 months) than the K-1 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 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 Pentax K-1 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-1 II for good quality output (200 dots per inch) amounts to 36.8 x 24.6 inch or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inch or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inch or 62.3 x 41.6 cm. The corresponding values for the Ricoh GR III are 30 x 20 inch or 76.2 x 50.8 cm for good quality, 24 x 16 inch or 61 x 40.6 cm for very good quality, and 20 x 13.3 inch or 50.8 x 33.9 cm for excellent quality prints.

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

Unlike the GR III, the K-1 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-1 II has a native sensitivity range from ISO 100 to ISO 819200. The corresponding ISO settings for the Ricoh GR III are ISO 100 to ISO 102400 (no boost).

K-1 II versus GR III 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Pentax K-1 II» Full Frame 36.2 7360 49121080/60i----Pentax K-1 II
 
Ricoh GR III« APS-C 24.0 6000 40001080/60p----Ricoh GR III
 
Canon R« » Full Frame 30.1 6720 44804K/30p24.513.5274289Canon R
 
Fujifilm XF10« » APS-C 24.0 6000 40004K/15p----Fujifilm XF10
 
Nikon Z6« » Full Frame 24.3 6048 40244K/30p25.314.3329995Nikon Z6
 
Olympus E-5« » Four Thirds 12.2 4032 3024720/30p21.610.551956Olympus E-5
 
Panasonic S1« » Full Frame 24.0 6000 40004K/60p25.214.5333395Panasonic S1
 
Panasonic S1R« » Full Frame 46.7 8368 55844K/60p26.414.13525100Panasonic S1R
 
Panasonic GX9« » Four Thirds 20.2 5184 38884K/30p----Panasonic GX9
 
Panasonic ZS200« » 1-inch 20.0 5472 36484K/30p----Panasonic ZS200
 
Pentax K-1« » Full Frame 36.2 7360 49121080/60i25.414.6328096Pentax K-1
 
Ricoh GR II« » APS-C 16.1 4928 32641080/30p23.613.7107880Ricoh GR II
 
Ricoh GR« » APS-C 16.1 4928 32641080/30p23.613.597278Ricoh GR
 
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
 
Sony A7R III« » Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
 
Sony A99 II« » Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 II
 
Sony A850« » Full Frame 24.4 6048 4032-23.812.2141579Sony A850

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 GR III provides a faster frame rate than the K-1 II. It can shoot movie footage at 1080/60p, while the Pentax is limited to 1080/60i.

 

Feature comparison: Pentax K-1 II vs Ricoh GR III

Beyond body and sensor, cameras can and do differ across a range of features. For example, the K-1 II has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GR III relies on live view and the rear LCD for framing. That said, the GR III can be equipped with an optional viewfinder – the GV-1. The table below summarizes some of the other core capabilities of the Pentax K-1 II and Ricoh GR III in connection with corresponding information for a sample of similar cameras.

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
Camera
Model
 
Pentax K-1 II»optical Y 3.2 1037 full-flex n 1/8000s 4.4 n Y Pentax K-1 II
 
Ricoh GR III«- n 3.0 1037 fixed Y 1/4000s 4.0 n Y Ricoh GR III
 
Canon R« »3690 Y 3.2 2100 swivel Y 1/8000s 8.0 n n Canon R
 
Fujifilm XF10« »- n 3.0 1040 fixed Y 1/4000s 6.0 Y n Fujifilm XF10
 
Nikon Z6« »3690 Y 3.2 2100 tilting Y 1/8000s 12.0 n Y Nikon Z6
 
Olympus E-5« »optical Y 3.0 920 swivel n 1/8000s 5.0 Y Y Olympus E-5
 
Panasonic S1« »5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y Panasonic S1
 
Panasonic S1R« »5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y Panasonic S1R
 
Panasonic GX9« »2760 n 3.0 1240 tilting Y 1/4000s 9.0 Y Y Panasonic GX9
 
Panasonic ZS200« »2330 n 3.0 1240 fixed Y 1/2000s 10.0 Y Y Panasonic ZS200
 
Pentax K-1« »optical Y 3.2 1037 full-flex n 1/8000s 4.4 n Y Pentax K-1
 
Ricoh GR II« »- n 3.0 1230 fixed n 1/4000s 4.0 Y n Ricoh GR II
 
Ricoh GR« »- n 3.0 1230 fixed n 1/4000s 4.0 Y n Ricoh GR
 
Sony A7 III« »2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y Sony A7 III
 
Sony A7R III« »3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R III
 
Sony A99 II« »2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y Sony A99 II
 
Sony A850« »optical Y 3.0 922 fixed n 1/8000s 3.0 n Y Sony A850

One feature that is present on the K-1 II, but is missing on the GR III 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 Pentax K-1 II and the Ricoh GR III 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-1 II and the GR III write their files to SDXC cards. The K-1 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the GR III 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: Pentax K-1 II vs Ricoh GR III

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-1 II and Ricoh GR III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Pentax K-1 II»YstereomonoYYmicro2.0Y--Pentax K-1 II
 
Ricoh GR III«Ystereomono---3.0Y-YRicoh GR III
 
Canon R« »YstereomonoY-mini3.1Y-YCanon R
 
Fujifilm XF10« »-stereomonoY-micro2.0Y-YFujifilm XF10
 
Nikon Z6« »YstereomonoYYmicro3.1Y-YNikon Z6
 
Olympus E-5« »Ystereo---mini2.0---Olympus E-5
 
Panasonic S1« »YstereomonoYYfull3.1Y-YPanasonic S1
 
Panasonic S1R« »YstereomonoYYfull3.1Y-YPanasonic S1R
 
Panasonic GX9« »Ystereomono--micro2.0Y-YPanasonic GX9
 
Panasonic ZS200« »-stereomono--micro2.0Y--Panasonic ZS200
 
Pentax K-1« »YstereomonoYYmicro2.0Y--Pentax K-1
 
Ricoh GR II« »Ystereomono--micro2.0YY-Ricoh GR II
 
Ricoh GR« »Ymonomono--micro2.0---Ricoh GR
 
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
 
Sony A7R III« »YstereomonoYYmicro3.1YYYSony A7R III
 
Sony A99 II« »YstereomonoYYmicro2.0YYYSony A99 II
 
Sony A850« »Y----mini2.0---Sony A850

It is notable that the K-1 II has a microphone port, which is missing on the GR III. 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 Pentax K-1 II (unlike the GR III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the K-1 II and the GR III are recent models that are part of the current product line-up. The K-1 II replaced the earlier Pentax K-1, while the GR III followed on from the Ricoh GR II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Ricoh websites.


Review summary: Pentax K-1 II vs Ricoh GR III

So what is the bottom line? Is there a clear favorite between the Pentax K-1 II and the Ricoh GR III? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Pentax K-1 II:

  • More detail: Offers more megapixels (36.2 vs 24MP) with a 23% higher linear resolution.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • 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.
  • Easier framing: Has an optical viewfinder for image framing and settings control.
  • 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 flexible LCD: Has full-flex screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (670 versus 200) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • 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 February 2018).

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Reasons to prefer the Ricoh GR III:

  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Ready to shoot: Comes with an integrated lens, while the K-1 II requires a separate lens.
  • More compact: Is smaller (109x62mm vs 137x110mm) 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-1 II).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Was introduced somewhat (11 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the K-1 II is the clear winner of the match-up (19 : 10 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

K-1 II 19:10 GR III

How about other alternatives? Do the specifications of the Pentax K-1 II and the Ricoh GR III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Prime Lens Compact 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 K-1 II or the GR III. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews: Pentax K-1 II vs Ricoh GR III

This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Pentax K-1 II»-79/1004.5/5-4.5/5 Feb 2018 1,999 i i Pentax K-1 II
 
Ricoh GR III«-81/1004/5-- Feb 2019 899 i i Ricoh GR III
 
Canon R« »o79/1004.5/54/54/5 Sep 2018 2,299 i i Canon R
 
Fujifilm XF10« »-75/1004/5-4.5/5 Jul 2018 499 i i Fujifilm XF10
 
Nikon Z6« »--4.5/5-5/5 Aug 2018 1,999 i i Nikon Z6
 
Olympus E-5« »-75/1004/5-4.5/5 Sep 2010 1,699- i Olympus E-5
 
Panasonic S1« »+ +---4/5 Feb 2019 2,499 i i Panasonic S1
 
Panasonic S1R« »--4.5/5-4.5/5 Feb 2019 3,699 i i Panasonic S1R
 
Panasonic GX9« »+84/1004.5/54.5/54.5/5 Feb 2018 849 i i Panasonic GX9
 
Panasonic ZS200« »+ +81/1004.5/5-4.5/5 Feb 2018 799 i i Panasonic ZS200
 
Pentax K-1« »-84/1005/54.5/55/5 Feb 2016 1,799- i Pentax K-1
 
Ricoh GR II« »--4.5/54.5/54.5/5 Jun 2015 699 i i Ricoh GR II
 
Ricoh GR« »-79/1004.5/54.5/54.5/5 Apr 2013 799- i Ricoh GR
 
Sony A7 III« »+ +89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
 
Sony A7R III« »+ +90/1004.5/55/55/5 Oct 2017 3,199 i i Sony A7R III
 
Sony A99 II« »-85/1004.5/54.5/54.5/5 Sep 2016 3,199 i i Sony A99 II
 
Sony A850« »-75/100-4/54.5/5 Aug 2009 1,999- i Sony A850
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Pentax K-1 II:
Check Amazon price
Ricoh GR III:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Pentax K-1 II vs Ricoh GR III

    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-1 II Ricoh GR III
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Pentax K mount lenses 28mm f/2.8
    Launch Date February 2018 February 2019
    Launch Price USD 1999 USD 899
    Sensor Specs Pentax K-1 II Ricoh GR III
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor APS-C Sensor
    Sensor Size 35.9 x 24.0 mm 23.5 x 15.6 mm
    Sensor Area 861.6 mm2 366.6 mm2
    Sensor Diagonal 43.2 mm 28.2 mm
    Crop Factor 1.0x 1.5x
    Sensor Resolution 36.2 Megapixels 24 Megapixels
    Image Resolution 7360 x 4912 pixels 6000 x 4000 pixels
    Pixel Pitch 4.88 μm 3.91 μm
    Pixel Density 4.20 MP/cm2 6.55 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 1080/60i Video 1080/60p Video
    ISO Setting 100-819200 ISO 100-102400 ISO
    Image Processor PRIME IV GR Engine VI
    Screen Specs Pentax K-1 II Ricoh GR III
    Viewfinder Type Optical viewfinder Viewfinder optional
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.70x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2 inch 3.0 inch
    LCD Resolution 1037k dots 1037k dots
    LCD Attachment Fully flexible screen Fixed screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Pentax K-1 II Ricoh GR III
    Autofocus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingNo Peaking Feature
    Continuous Shooting 4.4 shutter flaps/s 4 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Pentax K-1 II Ricoh GR III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 3.0
    HDMI Port micro HDMI no HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Geotagging GPS built-in
    Body Specs Pentax K-1 II Ricoh GR III
    Environmental SealingWeathersealed bodyNot weather sealed
    Battery Type D-LI90 power pack DB-110 power pack
    Battery Life (CIPA)670 shots per charge200 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 137 x 110 x 86 mm
    (5.4 x 4.3 x 3.4 in)
    109 x 62 x 33 mm
    (4.3 x 2.4 x 1.3 in)
    Camera Weight 1010 g (35.6 oz) 257 g (9.1 oz)

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