Nikon D7100 vs Ricoh GR III
The Nikon D7100 and the Ricoh GR III are two digital cameras that were officially introduced, respectively, in February 2013 and February 2019. The D7100 is a DSLR, while the GR III is a fixed lens compact. Both cameras are equipped with an APS-C sensor. Both cameras offer a resolution of 24 megapixels.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Nikon D7100||Ricoh GR III|
|Digital single lens reflex||Fixed lens compact camera|
|Nikon F mount lenses||28mm f/2.8|
|24 MP, APS-C Sensor||24 MP, APS-C Sensor|
|1080/60p Video||1080/60p Video|
|ISO 100-6400 (50-25600)||ISO 100-102400|
|Optical viewfinder||Viewfinder optional|
|3.2" LCD, 1229k dots||3.0" LCD, 1037k dots|
|Fixed screen (not touch-sensitive)||Fixed touchscreen|
|6 shutter flaps per second||4 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Weathersealed body||Not weather sealed|
|950 shots per battery charge||200 shots per battery charge|
|136 x 107 x 76 mm, 765 g||109 x 62 x 33 mm, 257 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D7100 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.
An illustration of the physical size and weight of the Nikon D7100 and the Ricoh GR III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth 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 III is considerably smaller (54 percent) than the Nikon D7100. It is worth mentioning in this context that the D7100 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 D7100 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the D7100 and their specifications in the Nikon Lens Catalog.
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 want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Nikon D7100»||5.4 in||4.2 in||3.0 in||27.0 oz||950||Y||Feb 2013||1,199||Nikon D7100|
|Ricoh GR III«||4.3 in||2.4 in||1.3 in||9.1 oz||200||n||Feb 2019||899||Ricoh GR III|
|Canon G7 X Mark III« »||4.1 in||2.4 in||1.6 in||10.7 oz||235||n||Jul 2019||749||Canon G7 X Mark III|
|Canon 70D« »||5.5 in||4.1 in||3.1 in||26.6 oz||920||Y||Jul 2013||1,199||Canon 70D|
|Fujifilm XF10« »||4.4 in||2.5 in||1.6 in||9.8 oz||330||n||Jul 2018||499||Fujifilm XF10|
|Nikon D7500« »||5.4 in||4.1 in||2.9 in||25.4 oz||950||Y||Apr 2017||1,299||Nikon D7500|
|Nikon D500« »||5.8 in||4.5 in||3.2 in||30.3 oz||1240||Y||Jan 2016||1,999||Nikon D500|
|Nikon D7200« »||5.4 in||4.2 in||3.0 in||27.0 oz||1110||Y||Mar 2015||1,199||Nikon D7200|
|Nikon D750« »||5.6 in||4.4 in||3.1 in||26.5 oz||1230||Y||Sep 2014||2,299||Nikon D750|
|Nikon D3300« »||4.9 in||3.9 in||3.0 in||15.2 oz||700||n||Jan 2014||499||Nikon D3300|
|Nikon D610« »||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Oct 2013||1,999||Nikon D610|
|Nikon D600« »||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Sep 2012||2,099||Nikon D600|
|Nikon D7000« »||5.2 in||4.1 in||3.0 in||27.5 oz||1050||Y||Sep 2010||1,499||Nikon D7000|
|Panasonic ZS200« »||4.4 in||2.6 in||1.8 in||12.0 oz||370||n||Feb 2018||799||Panasonic ZS200|
|Ricoh GR II« »||4.6 in||2.5 in||1.4 in||8.9 oz||320||n||Jun 2015||699||Ricoh GR II|
|Ricoh GR« »||4.6 in||2.4 in||1.4 in||8.6 oz||290||n||Apr 2013||799||Ricoh GR|
|Sony RX10« »||5.1 in||3.5 in||4.0 in||28.7 oz||420||Y||Oct 2013||1,299||Sony RX10|
|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 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 III was launched at a lower price than the D7100, 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.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 24 megapixels. This similarity in sensor specs implies that both the D7100 and the GR III have the same pixel density, as well as the same pixel size. It should, however, be noted that the GR III is much more recent (by 6 years) than the D7100, and its sensor will have benefitted from technological advances during this time. 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 GR III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Nikon D7100 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 50-25600. The corresponding ISO settings for the Ricoh GR III are ISO 100 to ISO 102400 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Nikon D7100||APS-C||24.0||6000||4000||1080/60p||24.2||13.7||1256||83||Nikon D7100|
|Ricoh GR III||APS-C||24.0||6000||4000||1080/60p||..||..||..||..||Ricoh GR III|
|Canon G7 X Mark III||1-inch||20.0||5472||3648||4K/30p||..||..||..||..||Canon G7 X Mark III|
|Canon 70D||APS-C||20.0||5472||3648||1080/30p||22.5||11.6||926||68||Canon 70D|
|Fujifilm XF10||APS-C||24.0||6000||4000||4K/15p||..||..||..||..||Fujifilm XF10|
|Nikon D7500||APS-C||20.7||5568||3712||4K/30p||24.3||14.0||1483||86||Nikon D7500|
|Nikon D500||APS-C||20.7||5568||3712||4K/30p||24.0||14.0||1324||83||Nikon D500|
|Nikon D7200||APS-C||24.0||6000||4000||1080/60p||24.5||14.6||1333||87||Nikon D7200|
|Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93||Nikon D750|
|Nikon D3300||APS-C||24.0||6000||4000||1080/60p||24.3||12.8||1385||82||Nikon D3300|
|Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94||Nikon D610|
|Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94||Nikon D600|
|Nikon D7000||APS-C||16.1||4928||3264||10800/24p||23.5||13.9||1167||80||Nikon D7000|
|Panasonic ZS200||1-inch||20.0||5472||3648||4K/30p||..||..||..||..||Panasonic ZS200|
|Ricoh GR II||APS-C||16.1||4928||3264||1080/30p||23.6||13.7||1078||80||Ricoh GR II|
|Ricoh GR||APS-C||16.1||4928||3264||1080/30p||23.6||13.5||972||78||Ricoh GR|
|Sony RX10||1-inch||20.0||5472||3648||1080/60p||22.9||12.6||474||69||Sony RX10|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/60p).
Beyond body and sensor, cameras can and do differ across a range of features. For example, the D7100 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 adjacent table lists some of the other core features of the Nikon D7100 and Ricoh GR III along with similar information for a selection of comparators.
|Nikon D7100||optical||Y||3.2||1229||fixed||n||1/8000s||6.0||Y||n||Nikon D7100|
|Ricoh GR III||optional||n||3.0||1037||fixed||Y||1/4000s||4.0||n||Y||Ricoh GR III|
|Canon G7 X Mark III||none||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y||Canon G7 X Mark III|
|Canon 70D||optical||Y||3.0||1040||swivel||Y||1/8000s||7.0||Y||n||Canon 70D|
|Fujifilm XF10||none||n||3.0||1040||fixed||Y||1/4000s||6.0||Y||n||Fujifilm XF10|
|Nikon D7500||optical||Y||3.2||922||tilting||Y||1/8000s||8.0||Y||n||Nikon D7500|
|Nikon D500||optical||Y||3.2||2359||tilting||Y||1/8000s||10.0||n||n||Nikon D500|
|Nikon D7200||optical||Y||3.2||1229||fixed||n||1/8000s||6.0||Y||n||Nikon D7200|
|Nikon D750||optical||Y||3.2||1229||tilting||n||1/4000s||6.0||Y||n||Nikon D750|
|Nikon D3300||optical||n||3.0||921||fixed||n||1/4000s||5.0||Y||n||Nikon D3300|
|Nikon D610||optical||Y||3.2||921||fixed||n||1/4000s||6.0||Y||n||Nikon D610|
|Nikon D600||optical||Y||3.0||921||fixed||n||1/4000s||5.5||Y||n||Nikon D600|
|Nikon D7000||optical||Y||3.0||921||fixed||n||1/8000s||6.0||Y||n||Nikon D7000|
|Panasonic ZS200||2330||n||3.0||1240||fixed||Y||1/2000s||10.0||Y||Y||Panasonic ZS200|
|Ricoh GR II||optional||n||3.0||1230||fixed||n||1/4000s||4.0||Y||n||Ricoh GR II|
|Ricoh GR||optional||n||3.0||1230||fixed||n||1/4000s||4.0||Y||n||Ricoh GR|
|Sony RX10||1440||Y||3.0||1229||tilting||n||1/3200s||10.0||Y||Y||Sony RX10|
One difference between the cameras concerns the presence of an on-board flash. The D7100 has one, while the GR III does not. While the built-in flash of the D7100 is not very powerful, it can at times be useful as a fill-in light.
The Nikon D7100 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 D7100 and the GR III write their files to SDXC cards. The D7100 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.
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 Nikon D7100 and Ricoh GR III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Nikon D7100||Y||stereo||mono||Y||Y||mini||2.0||-||-||-||Nikon D7100|
|Ricoh GR III||Y||stereo||mono||-||-||none||3.0||Y||-||Y||Ricoh GR III|
|Canon G7 X Mark III||-||stereo||mono||Y||-||micro||3.1||Y||-||Y||Canon G7 X Mark III|
|Canon 70D||Y||stereo||mono||Y||-||mini||2.0||Y||-||-||Canon 70D|
|Fujifilm XF10||-||stereo||mono||Y||-||micro||2.0||Y||-||Y||Fujifilm XF10|
|Nikon D7500||Y||stereo||mono||Y||Y||mini||2.0||Y||-||Y||Nikon D7500|
|Nikon D500||Y||stereo||mono||Y||Y||mini||3.0||Y||Y||Y||Nikon D500|
|Nikon D7200||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-||Nikon D7200|
|Nikon D750||Y||stereo||mono||Y||Y||mini||2.0||Y||-||-||Nikon D750|
|Nikon D3300||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D3300|
|Nikon D610||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Nikon D610|
|Nikon D600||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Nikon D600|
|Nikon D7000||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D7000|
|Panasonic ZS200||-||stereo||mono||-||-||micro||2.0||Y||-||Y||Panasonic ZS200|
|Ricoh GR II||Y||stereo||mono||-||-||micro||2.0||Y||Y||-||Ricoh GR II|
|Ricoh GR||Y||mono||mono||-||-||micro||2.0||-||-||-||Ricoh GR|
|Sony RX10||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony RX10|
It is notable that the D7100 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.
The GR III is a recent model that features in the current product line-up of Ricoh. In contrast, the D7100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the D7100 was succeeded by the Nikon D7200. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Ricoh websites.
So what conclusions can be drawn? Is the Nikon D7100 better than the Ricoh GR III or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Nikon D7100:
- 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 composition 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 detailed LCD: Has a higher resolution rear screen (1229k vs 1037k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (6 vs 4 flaps/sec) to capture the decisive moment.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (950 versus 200) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- 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 February 2013).
Advantages of the Ricoh GR III:
- 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 D7100 requires a separate lens.
- More compact: Is smaller (109x62mm vs 136x107mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the D7100).
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- 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: Reflects 6 years of technical progress since the D7100 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the D7100 emerges as the winner of the contest (14 : 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.
How about other alternatives? Do the specifications of the Nikon D7100 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 D7100 or the GR III. 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.
This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major 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.
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.
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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon M10 vs Nikon D7100
- Canon T3 vs Ricoh GR III
- Nikon D3300 vs Nikon D7100
- Nikon D7100 vs Panasonic TZ200
- Nikon D7100 vs Sony RX100 VI
- Olympus E-420 vs Ricoh GR III
- Panasonic G10 vs Ricoh GR III
- Panasonic GF1 vs Ricoh GR III
- Panasonic GH5s vs Ricoh GR III
- Panasonic LX10 vs Ricoh GR III
- Ricoh GR III vs Sony A77
- Ricoh GR III vs Sony NEX-C3
Specifications: Nikon D7100 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 Model||Nikon D7100||Ricoh GR III|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Nikon F mount lenses||28mm f/2.8|
|Launch Date||February 2013||February 2019|
|Launch Price||USD 1199||USD 899|
|Sensor Specs||Nikon D7100||Ricoh GR III|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.5 x 15.6 mm||23.5 x 15.6 mm|
|Sensor Area||366.6 mm2||366.6 mm2|
|Sensor Diagonal||28.2 mm||28.2 mm|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.91 μm||3.91 μm|
|Pixel Density||6.55 MP/cm2||6.55 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||1080/60p Video||1080/60p Video|
|ISO Setting||100-6400 ISO||100-102400 ISO|
|ISO Boost||50-25600 ISO||no Enhancement|
|Image Processor||EXPEED 4||GR Engine VI|
|DXO Sensor Quality (score)||83||..|
|DXO Color Depth (bits)||24.2||..|
|DXO Dynamic Range (EV)||13.7||..|
|DXO Low Light (ISO)||1256||..|
|Screen Specs||Nikon D7100||Ricoh GR III|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||100%|
|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||1229k dots||1037k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Nikon D7100||Ricoh GR III|
|Autofocus System||Phase-detect AF||On-Sensor Phase-detect|
|Continuous Shooting||6 shutter flaps/s||4 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in 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||Nikon D7100||Ricoh GR III|
|USB Connector||USB 2.0||USB 3.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Nikon D7100||Ricoh GR III|
|Environmental Sealing||Weathersealed body||Not weather sealed|
|Battery Life (CIPA)||950 shots per charge||200 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
136 x 107 x 76 mm
(5.4 x 4.2 x 3.0 in)
109 x 62 x 33 mm
(4.3 x 2.4 x 1.3 in)
|Camera Weight||765 g (27.0 oz)||257 g (9.1 oz)|
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