Pentax 645D vs Ricoh GR II
The Pentax 645D and the Ricoh GR II are two digital cameras that were officially introduced, respectively, in March 2010 and June 2015. The 645D is a DSLR, while the GR II is a fixed lens compact. The cameras are based on a medium format (645D) and an APS-C (GR II) 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.
|Pentax 645D||Ricoh GR II|
|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 100-1600||ISO 100-25600|
|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 body||Not weather sealed|
|800 shots per battery charge||320 shots per battery charge|
|156 x 117 x 119 mm, 1480 g||117 x 63 x 35 mm, 251 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645D and the Ricoh GR II? 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.
The side-by-side display below illustrates the physical size and weight of the Pentax 645D and the Ricoh GR II. 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.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Ricoh GR II is considerably smaller (60 percent) than the Pentax 645D. It is worth mentioning in this context that the 645D is splash and dust resistant, while the GR II does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the GR II 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 D-LI90 battery, while the GR II can take 320 images on a single charge of its DB65 power pack. The power pack in the GR II can be charged via the USB port, which can be very convenient when travelling.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Pentax 645D»||6.1 in||4.6 in||4.7 in||52.2 oz||800||Y||Mar 2010||9,995||-||Pentax 645D|
|Ricoh GR II«||4.6 in||2.5 in||1.4 in||8.9 oz||320||n||Jun 2015||699||Ricoh GR II|
|Canon 1D X Mark II« »||6.2 in||6.6 in||3.3 in||54.0 oz||1210||Y||Feb 2016||5,999||Canon 1D X Mark II|
|Canon G7 X« »||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699||-||Canon G7 X|
|Canon 1D X« »||6.2 in||6.6 in||3.3 in||54.7 oz||1120||Y||Oct 2011||6,799||-||Canon 1D X|
|Canon 1D Mark IV« »||6.1 in||6.2 in||3.1 in||43.4 oz||1500||Y||Oct 2009||4,999||-||Canon 1D Mark IV|
|Fujifilm X70« »||4.4 in||2.5 in||1.7 in||12.0 oz||330||n||Jan 2016||799||-||Fujifilm X70|
|Leica S Typ 006« »||6.3 in||4.7 in||3.1 in||44.4 oz||..||Y||Sep 2012||21,950||-||Leica S Typ 006|
|Nikon D850« »||5.7 in||4.9 in||3.1 in||35.5 oz||1840||Y||Jul 2017||3,299||Nikon D850|
|Nikon D5« »||6.3 in||6.3 in||3.6 in||49.9 oz||3780||Y||Jan 2016||6,499||Nikon D5|
|Nikon D810« »||5.7 in||4.8 in||3.2 in||34.6 oz||1200||Y||Jun 2014||3,299||-||Nikon D810|
|Nikon D3S« »||6.3 in||6.2 in||3.5 in||43.7 oz||4200||Y||Oct 2009||5,199||-||Nikon D3S|
|Panasonic GM5« »||3.9 in||2.4 in||1.4 in||7.4 oz||220||n||Sep 2014||749||-||Panasonic GM5|
|Pentax 645Z« »||6.1 in||4.6 in||4.8 in||54.7 oz||650||Y||Apr 2014||8,499||Pentax 645Z|
|Ricoh GR« »||4.6 in||2.4 in||1.4 in||8.6 oz||290||n||Apr 2013||799||-||Ricoh GR|
|Sony RX100 III« »||4.0 in||2.3 in||1.6 in||10.2 oz||320||n||May 2014||799||-||Sony RX100 III|
|Sony A7R« »||5.0 in||3.7 in||1.9 in||16.4 oz||340||Y||Oct 2013||2,299||-||Sony A7R|
|Note: Measurements and pricing do not include easily detachable parts, such as 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 GR II was launched at a lower price than the 645D, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Pentax 645D features a medium format sensor and the Ricoh GR II an APS-C sensor. The sensor area in the GR II 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 II offers a 3:2 aspect.
With 39.5MP, the 645D offers a higher resolution than the GR II (16.1MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 4.79μm for the GR II) due to its larger sensor. However, the GR II is a much more recent model (by 5 years and 3 months) 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 inch or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inch or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inch or 61.5 x 46.1 cm. The corresponding values for the Ricoh GR II are 24.6 x 16.3 inch or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inch or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inch 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 II are ISO 100 to ISO 25600 (no boost).
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Pentax 645D»||Medium Format||39.5||7264||5440||-||24.6||12.6||1262||82||Pentax 645D|
|Ricoh GR II«||APS-C||16.1||4928||3264||1080/30p||23.6||13.7||1078||80||Ricoh GR II|
|Canon 1D X Mark II« »||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88||Canon 1D X Mark II|
|Canon G7 X« »||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71||Canon G7 X|
|Canon 1D X« »||Full Frame||17.9||5184||3456||1080/30p||23.8||11.8||2786||82||Canon 1D X|
|Canon 1D Mark IV« »||APS-H||16.0||4896||3264||1080/30p||22.8||12.0||1320||74||Canon 1D Mark IV|
|Fujifilm X70« »||APS-C||16.0||4896||3264||1080/60p||-||-||-||-||Fujifilm X70|
|Leica S Typ 006« »||Medium Format||37.5||7500||5000||-||23.9||12.2||824||76||Leica S Typ 006|
|Nikon D850« »||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100||Nikon D850|
|Nikon D5« »||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88||Nikon D5|
|Nikon D810« »||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97||Nikon D810|
|Nikon D3S« »||Full Frame||12.1||4256||2832||720/24p||23.5||12.0||3253||82||Nikon D3S|
|Panasonic GM5« »||Four Thirds||15.8||4592||3448||1080/60p||22.1||11.7||721||66||Panasonic GM5|
|Pentax 645Z« »||Medium Format||51.1||8256||6192||1080/60i||26.0||14.7||4505||101||Pentax 645Z|
|Ricoh GR« »||APS-C||16.1||4928||3264||1080/30p||23.6||13.5||972||78||Ricoh GR|
|Sony RX100 III« »||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67||Sony RX100 III|
|Sony A7R« »||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95||Sony A7R|
Many modern cameras are not only capable of taking still images, but can also record movies. The GR II indeed provides for movie recording, while the 645D does not. The highest resolution format that the GR II can use is 1080/30p.
Apart from 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 II relies on live view and the rear LCD for framing. That said, the GR II can be equipped with an optional viewfinder – the GV-1. The adjacent table lists some of the other core features of the Pentax 645D and Ricoh GR II along with similar information for a selection of comparators.
|Pentax 645D»||optical||Y||3.0||921||fixed||n||1/4000s||1.1||n||n||Pentax 645D|
|Ricoh GR II«||-||n||3.0||1230||fixed||n||1/4000s||4.0||Y||n||Ricoh GR II|
|Canon 1D X Mark II« »||optical||Y||3.2||1620||fixed||Y||1/8000s||16.0||n||n||Canon 1D X Mark II|
|Canon G7 X« »||-||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y||Canon G7 X|
|Canon 1D X« »||optical||Y||3.2||1040||fixed||n||1/8000s||14.0||n||n||Canon 1D X|
|Canon 1D Mark IV« »||optical||Y||3.0||920||fixed||n||1/8000s||10.0||n||n||Canon 1D Mark IV|
|Fujifilm X70« »||-||n||3.0||1040||tilting||Y||1/4000s||8.0||Y||n||Fujifilm X70|
|Leica S Typ 006« »||optical||Y||3.0||922||fixed||n||1/4000s||1.5||n||n||Leica S Typ 006|
|Nikon D850« »||optical||Y||3.2||2359||tilting||Y||1/8000s||9.0||n||n||Nikon D850|
|Nikon D5« »||optical||Y||3.2||2359||fixed||Y||1/8000s||14.0||n||n||Nikon D5|
|Nikon D810« »||optical||Y||3.2||1229||fixed||n||1/8000s||5.0||Y||n||Nikon D810|
|Nikon D3S« »||optical||Y||3.0||921||fixed||n||1/8000s||11.0||n||n||Nikon D3S|
|Panasonic GM5« »||1166||n||3.0||921||fixed||Y||1/500s||5.8||n||n||Panasonic GM5|
|Pentax 645Z« »||optical||Y||3.2||1037||tilting||n||1/4000s||3.0||n||n||Pentax 645Z|
|Ricoh GR« »||-||n||3.0||1230||fixed||n||1/4000s||4.0||Y||n||Ricoh GR|
|Sony RX100 III« »||1440||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y||Sony RX100 III|
|Sony A7R« »||2400||n||3.0||1230||tilting||n||1/8000s||4.0||n||n||Sony A7R|
One feature that is present on the 645D, but is missing on the GR II 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 II 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 II 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 II only has one slot. The GR II 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.
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 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Pentax 645D»||Y||stereo||-||-||-||-||2.0||-||-||-||Pentax 645D|
|Ricoh GR II«||Y||stereo||mono||-||-||micro||2.0||Y||Y||-||Ricoh GR II|
|Canon 1D X Mark II« »||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Canon 1D X Mark II|
|Canon G7 X« »||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G7 X|
|Canon 1D X« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 1D X|
|Canon 1D Mark IV« »||Y||stereo||-||Y||-||mini||2.0||-||-||-||Canon 1D Mark IV|
|Fujifilm X70« »||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X70|
|Leica S Typ 006« »||Y||-||-||-||-||mini||2.0||-||-||-||Leica S Typ 006|
|Nikon D850« »||Y||stereo||mono||Y||Y||mini||3.0||Y||Y||Y||Nikon D850|
|Nikon D5« »||Y||stereo||mono||Y||Y||mini||3.0||-||-||-||Nikon D5|
|Nikon D810« »||Y||stereo||mono||Y||Y||mini||3.0||Y||-||-||Nikon D810|
|Nikon D3S« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Nikon D3S|
|Panasonic GM5« »||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Panasonic GM5|
|Pentax 645Z« »||Y||stereo||mono||Y||-||mini||3.0||-||-||-||Pentax 645Z|
|Ricoh GR« »||Y||mono||mono||-||-||micro||2.0||-||-||-||Ricoh GR|
|Sony RX100 III« »||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 III|
|Sony A7R« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R|
It is notable that the GR II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 645D does not offer wifi capability.
Studio photographers will appreciate that the Pentax 645D (unlike the GR II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The GR II is a recent model that features in the current product line-up of Ricoh. In contrast, the 645D has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 645D was succeeded by the Pentax 645Z. 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.
So how do things add up? Which of the two cameras – the Pentax 645D or the Ricoh GR II – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Pentax 645D:
- More detail: Offers more megapixels (39.5 vs 16.1MP) with a 54% higher linear resolution.
- 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 320) 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).
Advantages of the Ricoh GR II:
- More dynamic range: Captures a broader range of light and dark details (1.1 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 (117x63mm 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.
- 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.
- 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 5 years and 3 months of technical progress since the 645D launch.
If the number of relative strengths (bullet points above) is taken as a guide, the GR II is the clear winner of the contest (13 : 9 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.
How about other alternatives? Do the specifications of the Pentax 645D and the Ricoh GR II 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 645D or the GR II. 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.
This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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.
|Pentax 645D»||-||-||-||4.5/5||-||Mar 2010||9,995||-||Pentax 645D|
|Ricoh GR II«||-||-||4.5/5||4.5/5||4.5/5||Jun 2015||699||Ricoh GR II|
|Canon 1D X Mark II« »||-||89/100||4.5/5||5/5||4.5/5||Feb 2016||5,999||Canon 1D X Mark II|
|Canon G7 X« »||+ +||77/100||4.5/5||3.5/5||4.5/5||Sep 2014||699||-||Canon G7 X|
|Canon 1D X« »||-||-||4.5/5||4.5/5||4.5/5||Oct 2011||6,799||-||Canon 1D X|
|Canon 1D Mark IV« »||-||89/100||-||5/5||-||Oct 2009||4,999||-||Canon 1D Mark IV|
|Fujifilm X70« »||-||76/100||4.5/5||4/5||4.5/5||Jan 2016||799||-||Fujifilm X70|
|Leica S Typ 006« »||-||-||-||-||-||Sep 2012||21,950||-||Leica S Typ 006|
|Nikon D850« »||+ +||89/100||4.5/5||5/5||5/5||Jul 2017||3,299||Nikon D850|
|Nikon D5« »||-||89/100||4.5/5||5/5||5/5||Jan 2016||6,499||Nikon D5|
|Nikon D810« »||-||86/100||5/5||4.5/5||4.5/5||Jun 2014||3,299||-||Nikon D810|
|Nikon D3S« »||-||89/100||4.5/5||5/5||5/5||Oct 2009||5,199||-||Nikon D3S|
|Panasonic GM5« »||+||77/100||5/5||5/5||4.5/5||Sep 2014||749||-||Panasonic GM5|
|Pentax 645Z« »||-||-||4.5/5||5/5||5/5||Apr 2014||8,499||Pentax 645Z|
|Ricoh GR« »||-||79/100||4.5/5||4.5/5||4.5/5||Apr 2013||799||-||Ricoh GR|
|Sony RX100 III« »||+ +||82/100||4.5/5||4.5/5||5/5||May 2014||799||-||Sony RX100 III|
|Sony A7R« »||+ +||82/100||4.5/5||5/5||5/5||Oct 2013||2,299||-||Sony A7R|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D Mark IV vs Ricoh GR II
- Canon R vs Pentax 645D
- Canon T1i vs Ricoh GR II
- Canon T3 vs Ricoh GR II
- Epson R-D1 vs Ricoh GR II
- Leica M10 vs Ricoh GR II
- Leica S3 vs Pentax 645D
- Nikon D3200 vs Ricoh GR II
- Olympus E-300 vs Ricoh GR II
- Panasonic GF1 vs Pentax 645D
- Panasonic GX1 vs Pentax 645D
- Panasonic GX80 vs Pentax 645D
Specifications: Pentax 645D vs Ricoh GR II
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 Model||Pentax 645D||Ricoh GR II|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Pentax 645 mount lenses||28mm f/2.8|
|Launch Date||March 2010||June 2015|
|Launch Price||USD 9995||USD 699|
|Sensor Specs||Pentax 645D||Ricoh GR II|
|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|
|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||100-1600 ISO||100-25600 ISO|
|Image Processor||PRIME II||GR Engine V|
|DXO Sensor Quality (score)||82||80|
|DXO Color Depth (bits)||24.6||23.6|
|DXO Dynamic Range (EV)||12.6||13.7|
|DXO Low Light (ISO)||1262||1078|
|Screen Specs||Pentax 645D||Ricoh GR II|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||98%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||921k dots||1230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Pentax 645D||Ricoh GR II|
|Autofocus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||1.1 shutter flaps/s||4 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Pentax 645D||Ricoh GR II|
|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||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Pentax 645D||Ricoh GR II|
|Environmental Sealing||Weathersealed body||Not weather sealed|
|Battery Life (CIPA)||800 shots per charge||320 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
156 x 117 x 119 mm
(6.1 x 4.6 x 4.7 in)
117 x 63 x 35 mm
(4.6 x 2.5 x 1.4 in)
|Camera Weight||1480 g (52.2 oz)||251 g (8.9 oz)|
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