Canon R5 vs Ricoh GR III
The Canon EOS R5 and the Ricoh GR III are two digital cameras that were announced, respectively, in July 2020 and February 2019. The Canon R5 is a mirrorless interchangeable lens camera, while the GR III is a fixed lens compact. The cameras are based on a full frame (Canon R5) and an APS-C (GR III) sensor. The Canon has a resolution of 44.8 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R5 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 Canon R5 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 consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures 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 (50 percent) than the Canon R5. It is worth mentioning in this context that the Canon R5 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 Canon R5 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon R5||138 mm||98 mm||88 mm||738 g||320||Y||Jul 2020||3,899|
|2.||Ricoh GR III||109 mm||62 mm||33 mm||257 g||200||n||Feb 2019||899|
|3.||Canon R6||138 mm||98 mm||88 mm||680 g||360||Y||Jul 2020||2,499|
|4.||Canon G7 X Mark III||105 mm||61 mm||41 mm||304 g||235||n||Jul 2019||749|
|5.||Fujifilm XF10||113 mm||64 mm||41 mm||279 g||330||n||Jul 2018||499|
|6.||Nikon Z7 II||134 mm||101 mm||70 mm||705 g||420||Y||Oct 2020||2,999|
|7.||Nikon Z7||134 mm||101 mm||67 mm||675 g||330||Y||Aug 2018||3,399|
|8.||Panasonic S1R||149 mm||110 mm||97 mm||1016 g||380||Y||Feb 2019||3,699|
|9.||Panasonic ZS200||111 mm||65 mm||45 mm||340 g||370||n||Feb 2018||799|
|10.||Ricoh GR II||117 mm||63 mm||35 mm||251 g||320||n||Jun 2015||699|
|11.||Ricoh GR||117 mm||61 mm||35 mm||245 g||290||n||Apr 2013||799|
|12.||Sony A7S III||127 mm||97 mm||81 mm||699 g||600||Y||Jul 2020||3,499|
|13.||Sony A9 II||129 mm||96 mm||76 mm||678 g||690||Y||Oct 2019||4,499|
|14.||Sony A7R IV||129 mm||96 mm||78 mm||665 g||670||Y||Jul 2019||3,499|
|15.||Sony A7R III||127 mm||96 mm||74 mm||650 g||650||Y||Oct 2017||3,199|
|16.||Sony A99 II||143 mm||104 mm||76 mm||849 g||490||Y||Sep 2016||3,199|
|17.||Sony A7R II||127 mm||96 mm||60 mm||625 g||290||Y||Jun 2015||3,199|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GR III was launched at a lower price than the Canon R5, 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon R5 features a full frame sensor and the Ricoh GR III an APS-C sensor. The sensor area in the GR III is 58 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.
With 44.8MP, the Canon R5 offers a higher resolution than the GR III (24MP), but the Canon R5 nevertheless has larger individual pixels (pixel pitch of 4.39μm versus 3.91μm for the GR III) due to its larger sensor. Moreover, the Canon R5 is a somewhat more recent model (by 1 year and 4 months) than the GR III, and its sensor might 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 the GR III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon R5 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Canon R5 for good quality output (200 dots per inch) amounts to 41 x 27.3 inches or 104 x 69.4 cm, for very good quality (250 dpi) 32.8 x 21.9 inches or 83.2 x 55.5 cm, and for excellent quality (300 dpi) 27.3 x 18.2 inches or 69.4 x 46.3 cm. The corresponding values for the Ricoh GR III are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.
The Canon EOS R5 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-102400. The corresponding ISO settings for the Ricoh GR III are ISO 100 to ISO 102400 (no boost).
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
| DXO |
|1.||Canon R5||Full Frame||44.8||8192||5464||8k/30p||25.3||14.6||3042||95|
|2.||Ricoh GR III||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|3.||Canon R6||Full Frame||20.0||5472||3648||4k/60p||24.2||14.3||3394||90|
|4.||Canon G7 X Mark III||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|6.||Nikon Z7 II||Full Frame||45.4||8256||5504||4K/60p||26.3||14.7||2841||100|
|7.||Nikon Z7||Full Frame||45.4||8256||5504||4K/30p||26.3||14.6||2668||99|
|8.||Panasonic S1R||Full Frame||46.7||8368||5584||4K/60p||26.4||14.1||3525||100|
|10.||Ricoh GR II||APS-C||16.1||4928||3264||1080/30p||23.6||13.7||1078||80|
|12.||Sony A7S III||Full Frame||12.0||4240||2832||4K/120p||23.7||13.9||2520||86|
|13.||Sony A9 II||Full Frame||24.0||6000||4000||4K/30p||25.0||14.0||3434||93|
|14.||Sony A7R IV||Full Frame||60.2||9504||6336||4K/30p||26.0||14.8||3344||99|
|15.||Sony A7R III||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|16.||Sony A99 II||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|17.||Sony A7R II||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the Canon R5 provides a higher video resolution than the GR III. It can shoot video footage at 8k/30p, while the Ricoh is limited to 1080/60p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the Canon R5 has an electronic viewfinder (5760k dots), which can be very helpful 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 following table reports on some other key feature differences and similarities of the Canon R5, the Ricoh GR III, and comparable cameras.
|2.||Ricoh GR III||optional||n||3.0||1037||fixed||Y||1/4000s||4.0||n||Y|
|4.||Canon G7 X Mark III||none||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|6.||Nikon Z7 II||3690||Y||3.2||2100||tilting||Y||1/8000s||10.0||n||Y|
|10.||Ricoh GR II||optional||n||3.0||1230||fixed||n||1/4000s||4.0||Y||n|
|12.||Sony A7S III||9440||n||3.0||1440||swivel||Y||1/8000s||10.0||n||Y|
|13.||Sony A9 II||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y|
|14.||Sony A7R IV||5760||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y|
|15.||Sony A7R III||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y|
|16.||Sony A99 II||2400||Y||3.0||1229||full-flex||n||1/8000s||12.0||n||Y|
|17.||Sony A7R II||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y|
One feature that is present on the Canon R5, 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 Canon R5 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the GR III does not have a selfie-screen.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the Canon R5 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Canon R5 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.
The Canon R5 writes its imaging data to CFexpress or SDXC cards, while the GR III uses SDXC cards. The Canon R5 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GR III only has one slot. The Canon R5 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GR III can use UHS-I cards (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 Canon EOS R5 and Ricoh GR III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|2.||Ricoh GR III||Y||stereo||mono||-||-||-||3.0||Y||-||Y|
|4.||Canon G7 X Mark III||-||stereo||mono||Y||-||micro||3.1||Y||-||Y|
|6.||Nikon Z7 II||Y||stereo||mono||Y||Y||micro||3.2||Y||-||Y|
|10.||Ricoh GR II||Y||stereo||mono||-||-||micro||2.0||Y||Y||-|
|12.||Sony A7S III||Y||stereo||mono||Y||Y||full||3.2||Y||-||Y|
|13.||Sony A9 II||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y|
|14.||Sony A7R IV||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y|
|15.||Sony A7R III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y|
|16.||Sony A99 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y|
|17.||Sony A7R II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the Canon R5 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.
Both the Canon R5 and the GR III are recent models that are part of the current product line-up. The GR III replaced the earlier Ricoh GR II, while the Canon R5 does not have a direct predecessor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Ricoh websites.
So what conclusions can be drawn? Is there a clear favorite between the Canon R5 and the Ricoh GR III? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon EOS R5:
- More detail: Offers more megapixels (44.8 vs 24MP) with a 37% higher linear resolution.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features a larger and more technologically advanced imaging sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better video: Provides higher definition movie capture (8k/30p vs 1080/60p).
- 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 electronic 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 (2100k vs 1037k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 4 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Longer lasting: Can take more shots (320 versus 200) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Is somewhat more recent (announced 1 year and 4 months after the GR III).
Arguments in favor of the Ricoh GR III:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Ready to shoot: Has an integrated lens, whereas the Canon R5 necessitates an extra lens.
- More compact: Is smaller (109x62mm vs 138x98mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the Canon R5).
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been on the market for longer (launched in February 2019).
If the number of relative strengths (bullet points above) is taken as a guide, the Canon R5 is the clear winner of the match-up (24 : 6 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Canon R5 and the Ricoh GR III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the Canon R5 or the GR III perform in practice. 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 hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], 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.
|1.||Canon R5||4.5/5||..||91/100||4.5/5||4.5/5||Jul 2020||3,899|
|2.||Ricoh GR III||4/5||..||81/100||4/5||..||Feb 2019||899|
|3.||Canon R6||5/5||+ +||90/100||4.5/5||5/5||Jul 2020||2,499|
|4.||Canon G7 X Mark III||..||+ +||81/100||4/5||..||Jul 2019||749|
|5.||Fujifilm XF10||..||..||75/100||4/5||4.5/5||Jul 2018||499|
|6.||Nikon Z7 II||4.5/5||..||..||4.5/5||4.5/5||Oct 2020||2,999|
|7.||Nikon Z7||5/5||+||89/100||4.5/5||5/5||Aug 2018||3,399|
|8.||Panasonic S1R||4.5/5||..||89/100||4.5/5||4.5/5||Feb 2019||3,699|
|9.||Panasonic ZS200||..||+ +||81/100||4.5/5||4.5/5||Feb 2018||799|
|10.||Ricoh GR II||..||..||..||4.5/5||4.5/5||Jun 2015||699|
|11.||Ricoh GR||5/5||..||79/100||4.5/5||4.5/5||Apr 2013||799|
|12.||Sony A7S III||..||+ +||91/100||4.5/5||5/5||Jul 2020||3,499|
|13.||Sony A9 II||..||..||90/100||5/5||5/5||Oct 2019||4,499|
|14.||Sony A7R IV||5/5||+||91/100||4.5/5||5/5||Jul 2019||3,499|
|15.||Sony A7R III||..||+ +||90/100||4.5/5||5/5||Oct 2017||3,199|
|16.||Sony A99 II||..||..||85/100||4.5/5||4.5/5||Sep 2016||3,199|
|17.||Sony A7R II||5/5||+ +||90/100||5/5||5/5||Jun 2015||3,199|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Canon R5 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||Canon R5||Ricoh GR III|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Canon RF mount lenses||28mm f/2.8|
|Launch Date||July 2020||February 2019|
|Launch Price||USD 3,899||USD 899|
|Sensor Specs||Canon R5||Ricoh GR III|
|Sensor Format||Full Frame Sensor||APS-C Sensor|
|Sensor Size||36.0 x 24.0 mm||23.5 x 15.6 mm|
|Sensor Area||864 mm2||366.6 mm2|
|Sensor Diagonal||43.3 mm||28.2 mm|
|Sensor Resolution||44.8 Megapixels||24 Megapixels|
|Image Resolution||8192 x 5464 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.39 μm||3.91 μm|
|Pixel Density||5.18 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||8k/30p Video||1080/60p Video|
|ISO Setting||100 - 51,200 ISO||100 - 102,400 ISO|
|ISO Boost||50 - 102,400 ISO||no Enhancement|
|Image Processor||DIGIC X||GR Engine VI|
|DXO Sensor Quality (score)||95||..|
|DXO Color Depth (bits)||25.3||..|
|DXO Dynamic Range (EV)||14.6||..|
|DXO Low Light (ISO)||3042||..|
|Screen Specs||Canon R5||Ricoh GR III|
|Viewfinder Type||Electronic viewfinder||Viewfinder optional|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||5760k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.0inch|
|LCD Resolution||2100k dots||1037k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Shooting Specs||Canon R5||Ricoh GR III|
|Focus System||On-Sensor Phase-detect||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||10 shutter flaps/s||4 shutter flaps/s|
|Electronic Shutter||up to 1/8000s||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||In-body stabilization||In-body stabilization|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||CFexpress or SDXC cards||SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||UHS-II||UHS-I|
|Connectivity Specs||Canon R5||Ricoh GR III|
|USB Connector||USB 3.2||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||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Canon R5||Ricoh GR III|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||320 shots per charge||200 shots per charge|
|In-Camera Charging||USB charging||USB charging|
138 x 98 x 88 mm
(5.4 x 3.9 x 3.5 in)
109 x 62 x 33 mm
(4.3 x 2.4 x 1.3 in)
|Camera Weight||738 g (26.0 oz)||257 g (9.1 oz)|
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