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Pentax 645D vs Ricoh GR

The Pentax 645D and the Ricoh GR are two digital cameras that were officially introduced, respectively, in March 2010 and April 2013. The 645D is a DSLR, while the GR is a fixed lens compact. The cameras are based on a medium format (645D) and an APS-C (GR) sensor. The Pentax has a resolution of 39.5 megapixels, whereas the Ricoh provides 16.1 MP.

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

Headline Specifications
Pentax 645D
versus
Ricoh GR
Pentax 645D   Ricoh GR
Digital single lens reflex Fixed lens compact camera
Pentax 645 mount lenses 28mm f/2.8
39.5 MP – Medium Format sensor 16.1 MP – APS-C sensor
no Video 1080/30p Video
ISO 100-1,600 ISO 100-25,600
Optical viewfinder Viewfinder optional
3.0" LCD – 921k dots 3.0" LCD – 1230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
1.1 shutter flaps per second 4 shutter flaps per second
Weathersealed bodynot weather sealed
800 shots per battery charge290 shots per battery charge
156 x 117 x 119 mm, 1480 g 117 x 61 x 35 mm, 245 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645D and the Ricoh GR? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

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Body comparison

The physical size and weight of the Pentax 645D and the Ricoh GR 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.

Size Pentax 645D vs Ricoh GR
Compare 645D versus GR top
Comparison 645D or GR rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Ricoh GR is considerably smaller (61 percent) than the Pentax 645D. It is worth mentioning in this context that the 645D is splash and dust resistant, while the GR does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the GR has a lens built in, whereas the 645D 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 645D gets 800 shots out of its Pentax D-LI90 battery, while the GR can take 290 images on a single charge of its Ricoh DB-65 power pack. The power pack in the GR 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
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995ebay.com
2.
 
Ricoh GR 117 mm 61 mm 35 mm 245 g 290 n Apr 2013 799ebay.com
3.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999ebay.com
4.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799ebay.com
5.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999ebay.com
6.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 21,950ebay.com
7.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 amazon.com
8.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499ebay.com
9.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 3,299ebay.com
10.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199ebay.com
11.
 
Panasonic GM5 99 mm 60 mm 36 mm 211 g 220 n Sep 2014 749ebay.com
12.
 
Panasonic GM1 99 mm 55 mm 30 mm 204 g 230 n Oct 2013 749ebay.com
13.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499ebay.com
14.
 
Ricoh GR II 117 mm 63 mm 35 mm 251 g 320 n Jun 2015 699ebay.com
15.
 
Sony RX100 III 102 mm 58 mm 41 mm 290 g 320 n May 2014 799ebay.com
16.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
17.
 
Sony RX100 II 102 mm 58 mm 38 mm 281 g 350 n Jun 2013 749ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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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 was launched at a lower price than the 645D, 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

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 645D features a medium format sensor and the Ricoh GR an APS-C sensor. The sensor area in the GR is 75 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.5. The sensor in the 645D has a native 4:3 aspect ratio, while the one in the GR offers a 3:2 aspect.

Pentax 645D and Ricoh GR sensor measures

With 39.5MP, the 645D offers a higher resolution than the GR (16.1MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 4.79μm for the GR) due to its larger sensor. However, the GR is a much more recent model (by 3 years and 1 month) than the 645D, 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 Pentax 645D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645D for good quality output (200 dots per inch) amounts to 36.3 x 27.2 inches or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inches or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inches or 61.5 x 46.1 cm. The corresponding values for the Ricoh GR are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.

The Pentax 645D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Ricoh GR are ISO 100 to ISO 25600 (no boost).

In terms of underlying technology, the 645D is build around a CCD sensor, while the GR uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

645D versus GR 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"). Of the two cameras under review, the 645D has a notably higher overall DXO score than the GR (overall score 4 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1 bits higher color depth, 0.9 EV of lower dynamic range, and 0.4 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
2.
 
Ricoh GR APS-C 16.1 4928 32641080/30p23.613.597278
3.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
4.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
5.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
6.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
7.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
8.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
9.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
10.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
11.
 
Panasonic GM5 Four Thirds 15.8 4592 34481080/60p22.111.772166
12.
 
Panasonic GM1 Four Thirds 15.8 4592 34481080/60i22.311.766066
13.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
14.
 
Ricoh GR II APS-C 16.1 4928 32641080/30p23.613.7107880
15.
 
Sony RX100 III 1-inch 20.0 5472 36481080/60p22.412.349567
16.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
17.
 
Sony RX100 II 1-inch 20.0 5472 36481080/60p22.512.448367
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Many modern cameras cannot only take still pictures, but also record videos. The GR indeed provides for movie recording, while the 645D does not. The highest resolution format that the GR can use is 1080/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the 645D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GR relies on live view and the rear LCD for framing. That said, the GR can be equipped with an optional viewfinder – the GV-1. The table below summarizes some of the other core capabilities of the Pentax 645D and Ricoh GR in connection with corresponding information for a sample of similar cameras.

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Core Features
# image Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
2.
 
Ricoh GRoptional n3.0 / 1230 fixed n 1/4000s 4.0/s Y n
3.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
4.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
5.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
6.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
7.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
8.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
9.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
10.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
11.
 
Panasonic GM51166 n3.0 / 921 fixed Y 1/500s 5.8/s n n
12.
 
Panasonic GM1none n3.0 / 1036 fixed Y 1/500s 5.0/s Y n
13.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
14.
 
Ricoh GR IIoptional n3.0 / 1230 fixed n 1/4000s 4.0/s Y n
15.
 
Sony RX100 III1440 n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
16.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
17.
 
Sony RX100 IIoptional n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One feature that is present on the 645D, but is missing on the GR 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 645D and the Ricoh GR 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 645D and the GR write their files to SDXC cards. The 645D features dual card slots, which can be very useful in case a memory card fails. In contrast, the GR only has one slot. The GR supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the 645D cannot take advantage of Ultra High Speed SD 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 Pentax 645D and Ricoh GR and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax 645DYstereo / ----2.0---
2.
 
Ricoh GRYmono / mono--micro2.0---
3.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
4.
 
Canon 1D XYmono / -Y-mini2.0---
5.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
6.
 
Leica S Typ 006Y- / ---mini2.0---
7.
 
Nikon D850Ystereo / monoYYmini3.0YYY
8.
 
Nikon D5Ystereo / monoYYmini3.0---
9.
 
Nikon D810Ystereo / monoYYmini3.0Y--
10.
 
Nikon D3SYstereo / ---mini2.0---
11.
 
Panasonic GM5Ystereo / mono--micro2.0Y--
12.
 
Panasonic GM1-stereo / mono--micro2.0Y--
13.
 
Pentax 645ZYstereo / monoY-mini3.0---
14.
 
Ricoh GR IIYstereo / mono--micro2.0YY-
15.
 
Sony RX100 III-stereo / mono--micro2.0YY-
16.
 
Sony A7RYstereo / monoYYmicro2.0YY-
17.
 
Sony RX100 IIYstereo / mono--micro2.0YY-
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Studio photographers will appreciate that the Pentax 645D (unlike the GR) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 645D and the GR have been discontinued, but can regularly be found used on ebay. The 645D was replaced by the Pentax 645Z, while the GR was followed by the Ricoh GR II. Further information on the features and operation of the 645D and GR can be found, respectively, in the Pentax 645D Manual (free pdf) or the online Ricoh GR Manual.

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Review summary

So what is the bottom line? Is there a clear favorite between the Pentax 645D and the Ricoh GR? 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 645D:

  • More detail: Offers more megapixels (39.5 vs 16.1MP) with a 54% higher linear resolution.
  • Better image quality: Scores markedly higher (4 points) in the DXO overall assessment.
  • Better low-light sensitivity: Requires less light for good images (0.4 stops ISO advantage).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (800 versus 290) 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 available for much longer (launched in March 2010).

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Reasons to prefer the Ricoh GR:

  • More dynamic range: Captures a broader range of light and dark details (0.9 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 1080/30p video.
  • More detailed LCD: Has a higher resolution rear screen (1230k vs 921k dots).
  • Faster burst: Shoots at higher frequency (4 vs 1.1 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Comes with an integrated lens, while the 645D requires a separate lens.
  • More compact: Is smaller (117x61mm vs 156x117mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 645D).
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 3 years and 1 month of technical progress since the 645D launch.

If the number of relative strengths (bullet points above) is taken as a guide, the GR comes out slightly ahead of the 645D (12 : 11 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.

645D 11:12 GR

How about other alternatives? Do the specifications of the Pentax 645D and the Ricoh GR 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 645D or the GR. 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

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 (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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax 645D5/5.......... Mar 2010 9,995ebay.com
2.
 
Ricoh GR5/5....79/1004.5/54.5/5 Apr 2013 799ebay.com
3.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 5,999ebay.com
4.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 6,799ebay.com
5.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 4,999ebay.com
6.
 
Leica S Typ 006............ Sep 2012 21,950ebay.com
7.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 amazon.com
8.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 6,499ebay.com
9.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 3,299ebay.com
10.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199ebay.com
11.
 
Panasonic GM53.5/5+..77/1005/54.5/5 Sep 2014 749ebay.com
12.
 
Panasonic GM13/5+..78/1005/54.5/5 Oct 2013 749ebay.com
13.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 8,499ebay.com
14.
 
Ricoh GR II........4.5/54.5/5 Jun 2015 699ebay.com
15.
 
Sony RX100 III5/5+ +..82/1004.5/55/5 May 2014 799ebay.com
16.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
17.
 
Sony RX100 II5/5+ +..79/1004.5/54.5/5 Jun 2013 749ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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.

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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 645D vs Ricoh GR

    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 645D Ricoh GR
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Pentax 645 mount lenses 28mm f/2.8
    Launch Date March 2010 April 2013
    Launch Price USD 9,995 USD 799
    Sensor Specs Pentax 645D Ricoh GR
    Sensor Technology CCD CMOS
    Sensor Format Medium Format Sensor APS-C Sensor
    Sensor Size 44.0 x 33.0 mm 23.7 x 15.6 mm
    Sensor Area 1452 mm2 369.72 mm2
    Sensor Diagonal 55 mm 28.4 mm
    Crop Factor 0.79x 1.5x
    Sensor Resolution 39.5 Megapixels 16.1 Megapixels
    Image Resolution 7264 x 5440 pixels 4928 x 3264 pixels
    Pixel Pitch 6.06 μm 4.79 μm
    Pixel Density 2.72 MP/cm2 4.35 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability no Video 1080/30p Video
    ISO Setting 100 - 1,600 ISO 100 - 25,600 ISO
    DXO Sensor Quality (score) 82 78
    DXO Color Depth (bits) 24.6 23.6
    DXO Dynamic Range (EV) 12.6 13.5
    DXO Low Light (ISO) 1262 972
    Screen Specs Pentax 645D Ricoh GR
    Viewfinder Type Optical viewfinder Viewfinder optional
    Viewfinder Field of View 98%
    Viewfinder Magnification 0.78x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Pentax 645D Ricoh GR
    Focus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 1.1 shutter flaps/s 4 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support no UHS-I
    Connectivity Specs Pentax 645D Ricoh GR
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Pentax 645D Ricoh GR
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type Pentax D-LI90 Ricoh DB-65
    Battery Life (CIPA)800 shots per charge290 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    117 x 61 x 35 mm
    (4.6 x 2.4 x 1.4 in)
    Camera Weight 1480 g (52.2 oz) 245 g (8.6 oz)
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