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Ricoh GR III vs Canon 5D Mark III

The Ricoh GR III and the Canon EOS 5D Mark III are two digital cameras that were announced, respectively, in February 2019 and March 2012. The GR III is a fixed lens compact, while the 5D Mark III is a DSLR. The cameras are based on an APS-C (GR III) and a full frame (5D Mark III) sensor. The Ricoh has a resolution of 24 megapixels, whereas the Canon provides 22.1 MP.

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

Headline Specifications
Ricoh GR III   Canon 5D Mark III
Ricoh GR III Canon 5D Mark III
Fixed lens compact camera Digital single lens reflex
28mm f/2.8 Canon EF mount lenses
24 MP, APS-C Sensor 22.1 MP, Full Frame Sensor
1080/60p Video 1080/30p Video
ISO 100-102400 ISO 100-25600 (50-102400)
Viewfinder optional Optical viewfinder
3.0" LCD, 1037k dots 3.2" LCD, 1040k dots
Fixed touchscreen Fixed screen (not touch-sensitive)
4 shutter flaps per second 6 shutter flaps per second
In-body stabilizationLens stabilization only
Not weather sealedWeathersealed body
200 shots per battery charge950 shots per battery charge
109 x 62 x 33 mm, 257 g 152 x 116 x 76 mm, 950 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Ricoh GR III and the Canon EOS 5D Mark III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison: Ricoh GR III vs Canon 5D Mark III

An illustration of the physical size and weight of the Ricoh GR III and the Canon 5D Mark III is provided 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 width, height and depth measures are rounded to the nearest millimeter.

Size Ricoh GR III vs Canon 5D Mark III
Compare GR III versus 5D Mark III top
Comparison GR III or 5D Mark III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 5D Mark III is considerably larger (161 percent) than the Ricoh GR III. It is noteworthy in this context that the 5D Mark III is splash and dust-proof, 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 5D Mark III 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 5D Mark III and their specifications in the Canon EF Lens Catalog.

The power pack in the GR III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Ricoh GR III» 4.3 in 2.4 in 1.3 in 9.1 oz 200 n Feb 2019 899 i i Ricoh GR III
 
Canon 5D Mark III« 6.0 in 4.6 in 3.0 in 33.5 oz 950 Y Mar 2012 3,499- i Canon 5D Mark III
 
Canon SX740« » 4.3 in 2.5 in 1.6 in 10.5 oz 265 n Jul 2018 399 i i Canon SX740
 
Canon 5D Mark IV« » 5.9 in 4.6 in 3.0 in 31.4 oz 900 Y Aug 2016 3,499 i i Canon 5D Mark IV
 
Canon 5DS« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS
 
Canon 5DS R« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS R
 
Canon 5D Mark II« » 6.0 in 4.5 in 3.0 in 30.0 oz 850 Y Sep 2008 3,499- i Canon 5D Mark II
 
Fujifilm X-T30« » 4.6 in 3.3 in 1.9 in 13.5 oz 380 n Feb 2019 899 i i Fujifilm X-T30
 
Fujifilm XF10« » 4.4 in 2.5 in 1.6 in 9.8 oz 330 n Jul 2018 499 i i Fujifilm XF10
 
Leica C-LUX« » 4.4 in 2.6 in 1.8 in 12.0 oz 370 n Jun 2018 1,049 i i Leica C-LUX
 
Nikon D610« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Oct 2013 1,999 i i Nikon D610
 
Panasonic GX9« » 4.9 in 2.8 in 1.9 in 14.4 oz 260 n Feb 2018 849 i i Panasonic GX9
 
Panasonic ZS200« » 4.4 in 2.6 in 1.8 in 12.0 oz 370 n Feb 2018 799 i i Panasonic ZS200
 
Ricoh GR II« » 4.6 in 2.5 in 1.4 in 8.9 oz 320 n Jun 2015 699 i i Ricoh GR II
 
Ricoh GR« » 4.6 in 2.4 in 1.4 in 8.6 oz 290 n Apr 2013 799- i Ricoh GR
 
Sony A6400« » 4.7 in 2.6 in 2.0 in 14.2 oz 410 n Jan 2019 899 i i Sony A6400
 
Sony RX100 VI« » 4.0 in 2.3 in 1.7 in 10.6 oz 240 n Jun 2018 1,199 i i Sony RX100 VI
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 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 5D Mark III, 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: Ricoh GR III vs Canon 5D Mark III

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 tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Ricoh GR III features an APS-C sensor and the Canon 5D Mark III a full frame sensor. The sensor area in the 5D Mark III is 135 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Ricoh GR III and Canon 5D Mark III sensor measures

Despite having a smaller sensor, the Ricoh GR III offers a higher resolution of 24 megapixels, compared with 22.1 MP of the Canon 5D Mark III. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.91μm versus 6.25μm for the 5D Mark III). However, it should be noted that the GR III is much more recent (by 6 years and 11 months) than the 5D Mark III, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. 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 GR III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Ricoh GR III has a native sensitivity range from ISO 100 to ISO 102400. The corresponding ISO settings for the Canon EOS 5D Mark III are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

GR III versus 5D Mark III MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Ricoh GR III» APS-C 24.0 6000 40001080/60p----Ricoh GR III
 
Canon 5D Mark III« Full Frame 22.1 5760 38401080/30p24.011.7229381Canon 5D Mark III
 
Canon SX740« » 1/2.3 20.2 5184 38884K/30p----Canon SX740
 
Canon 5D Mark IV« » Full Frame 30.1 6720 44804K/30p24.813.6299591Canon 5D Mark IV
 
Canon 5DS« » Full Frame 50.3 8688 57921080/30p24.712.4238187Canon 5DS
 
Canon 5DS R« » Full Frame 50.3 8688 57921080/30p24.612.4230886Canon 5DS R
 
Canon 5D Mark II« » Full Frame 21.0 5616 37441080/30p23.711.9181579Canon 5D Mark II
 
Fujifilm X-T30« » APS-C 26.0 6240 41604K/30p----Fujifilm X-T30
 
Fujifilm XF10« » APS-C 24.0 6000 40004K/15p----Fujifilm XF10
 
Leica C-LUX« » 1-inch 20.0 5472 36484K/30p----Leica C-LUX
 
Nikon D610« » Full Frame 24.2 6016 40161080/30p25.114.4292594Nikon D610
 
Panasonic GX9« » Four Thirds 20.2 5184 38884K/30p----Panasonic GX9
 
Panasonic ZS200« » 1-inch 20.0 5472 36484K/30p----Panasonic ZS200
 
Ricoh GR II« » APS-C 16.1 4928 32641080/30p23.613.7107880Ricoh GR II
 
Ricoh GR« » APS-C 16.1 4928 32641080/30p23.613.597278Ricoh GR
 
Sony A6400« » APS-C 24.0 6000 40004K/30p2413.6143183Sony A6400
 
Sony RX100 VI« » 1-inch 20.0 5472 36484K/30p----Sony RX100 VI

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the GR III provides a higher frame rate than the 5D Mark III. It can shoot video footage at 1080/60p, while the Canon is limited to 1080/30p.

 

Feature comparison: Ricoh GR III vs Canon 5D Mark III

Beyond body and sensor, cameras can and do differ across a range of features. For example, the 5D Mark III has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GR III relies on live view and the rear LCD for framing. That said, the GR III can be equipped with an optional viewfinder – the GV-1. The table below summarizes some of the other core capabilities of the Ricoh GR III and Canon 5D Mark III in connection with corresponding information for a sample of similar cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Ricoh GR III»- n 3.0 1037 fixed Y 1/4000s 4.0 n Y Ricoh GR III
 
Canon 5D Mark III«optical Y 3.2 1040 fixed n 1/8000s 6.0 n n Canon 5D Mark III
 
Canon SX740« »- n 3.0 922 tilting n 1/3200s 10.0 Y Y Canon SX740
 
Canon 5D Mark IV« »optical Y 3.2 1620 fixed Y 1/8000s 7.0 n n Canon 5D Mark IV
 
Canon 5DS« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS
 
Canon 5DS R« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS R
 
Canon 5D Mark II« »optical Y 3.0 920 fixed n 1/8000s 3.9 n n Canon 5D Mark II
 
Fujifilm X-T30« »2360 n 3.0 1040 tilting Y 1/4000s 8.0 Y n Fujifilm X-T30
 
Fujifilm XF10« »- n 3.0 1040 fixed Y 1/4000s 6.0 Y n Fujifilm XF10
 
Leica C-LUX« »2330 n 3.0 1240 fixed Y 1/2000s 10.0 Y Y Leica C-LUX
 
Nikon D610« »optical Y 3.2 921 fixed n 1/4000s 6.0 Y n Nikon D610
 
Panasonic GX9« »2760 n 3.0 1240 tilting Y 1/4000s 9.0 Y Y Panasonic GX9
 
Panasonic ZS200« »2330 n 3.0 1240 fixed Y 1/2000s 10.0 Y Y Panasonic ZS200
 
Ricoh GR II« »- n 3.0 1230 fixed n 1/4000s 4.0 Y n Ricoh GR II
 
Ricoh GR« »- n 3.0 1230 fixed n 1/4000s 4.0 Y n Ricoh GR
 
Sony A6400« »2359 n 3.0 922 tilting Y 1/4000s 11.0 Y n Sony A6400
 
Sony RX100 VI« »2359 n 3.0 1229 tilting Y 1/2000s 24.0 Y Y Sony RX100 VI

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GR III has a touchscreen, while the 5D Mark III has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The Ricoh GR III has 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 GR III writes its imaging data to SDXC cards, while the 5D Mark III uses Compact Flash or SDXC cards. The 5D Mark III 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 GR III supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the 5D Mark III cannot take advantage of Ultra High Speed SD cards.

 

Connectivity comparison: Ricoh GR III vs Canon 5D Mark III

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Ricoh GR III and Canon EOS 5D Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Ricoh GR III»Ystereomono---3.0Y-YRicoh GR III
 
Canon 5D Mark III«YmonomonoYYmini2.0---Canon 5D Mark III
 
Canon SX740« »-stereomono--micro2.0YYYCanon SX740
 
Canon 5D Mark IV« »YmonomonoYYmini3.0YY-Canon 5D Mark IV
 
Canon 5DS« »YmonomonoY-mini3.0---Canon 5DS
 
Canon 5DS R« »YmonomonoY-mini3.0---Canon 5DS R
 
Canon 5D Mark II« »YmonomonoY-mini2.0---Canon 5D Mark II
 
Fujifilm X-T30« »YstereomonoY-micro3.1Y-YFujifilm X-T30
 
Fujifilm XF10« »-stereomonoY-micro2.0Y-YFujifilm XF10
 
Leica C-LUX« »-stereomono--micro2.0Y--Leica C-LUX
 
Nikon D610« »YmonomonoYYmini2.0---Nikon D610
 
Panasonic GX9« »Ystereomono--micro2.0Y-YPanasonic GX9
 
Panasonic ZS200« »-stereomono--micro2.0Y-YPanasonic ZS200
 
Ricoh GR II« »Ystereomono--micro2.0YY-Ricoh GR II
 
Ricoh GR« »Ymonomono--micro2.0---Ricoh GR
 
Sony A6400« »YstereomonoY-micro2.0YYYSony A6400
 
Sony RX100 VI« »-stereomono--micro2.0YYYSony RX100 VI

It is notable that the GR III offers wifi support, while the 5D Mark III does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Canon 5D Mark III (unlike the GR III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The GR III is a recent model that features in the current product line-up of Ricoh. In contrast, the 5D Mark III has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 5D Mark III was succeeded by the Canon 5D Mark IV. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Ricoh and Canon websites.


Review summary: Ricoh GR III vs Canon 5D Mark III

So what conclusions can be drawn? Is the Ricoh GR III better than the Canon 5D Mark III or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Ricoh GR III:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Ready to shoot: Comes with a built-in lens, while the 5D Mark III requires a separate lens.
  • More compact: Is smaller (109x62mm vs 152x116mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the 5D Mark III).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • 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.
  • 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 6 years and 11 months of technical progress since the 5D Mark III launch.

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Reasons to prefer the Canon EOS 5D Mark III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Easier framing: Has an optical viewfinder for image framing and settings control.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • 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: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (950 versus 200) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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 around for much longer (launched in March 2012).

If the count of relative strengths (bullet points above) is taken as a measure, the GR III comes out slightly ahead of the 5D Mark III (15 : 14 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

GR III 15:14 5D Mark III

How about other alternatives? Do the specifications of the Ricoh GR III and the Canon 5D Mark III place the cameras among the top in their class? Find out in the latest Best Prime Lens Compact Camera and Best DSLR 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 GR III or the 5D Mark 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.

Expert reviews: Ricoh GR III vs Canon 5D Mark III

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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Ricoh GR III»-81/1004/5-- Feb 2019 899 i i Ricoh GR III
 
Canon 5D Mark III«+ +82/1004.5/55/54.5/5 Mar 2012 3,499- i Canon 5D Mark III
 
Canon SX740« »+-4/5-4/5 Jul 2018 399 i i Canon SX740
 
Canon 5D Mark IV« »+ +87/1004.5/55/54.5/5 Aug 2016 3,499 i i Canon 5D Mark IV
 
Canon 5DS« »+83/1004.5/55/54.5/5 Feb 2015 3,699 i i Canon 5DS
 
Canon 5DS R« »+83/1005/55/54.5/5 Feb 2015 3,699 i i Canon 5DS R
 
Canon 5D Mark II« »91/10079/1004/55/5- Sep 2008 3,499- i Canon 5D Mark II
 
Fujifilm X-T30« »+ +84/1004.5/5-4.5/5 Feb 2019 899 i i Fujifilm X-T30
 
Fujifilm XF10« »-75/1004/5-4.5/5 Jul 2018 499 i i Fujifilm XF10
 
Leica C-LUX« »--4.5/5-4/5 Jun 2018 1,049 i i Leica C-LUX
 
Nikon D610« »+ +87/1004.5/54.5/54.5/5 Oct 2013 1,999 i i Nikon D610
 
Panasonic GX9« »+84/1004.5/54.5/54.5/5 Feb 2018 849 i i Panasonic GX9
 
Panasonic ZS200« »+ +81/1004.5/5-4.5/5 Feb 2018 799 i i Panasonic ZS200
 
Ricoh GR II« »--4.5/54.5/54.5/5 Jun 2015 699 i i Ricoh GR II
 
Ricoh GR« »-79/1004.5/54.5/54.5/5 Apr 2013 799- i Ricoh GR
 
Sony A6400« »+85/1004.5/5-4/5 Jan 2019 899 i i Sony A6400
 
Sony RX100 VI« »+ +83/1004/5-4.5/5 Jun 2018 1,199 i i Sony RX100 VI
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

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. 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, please note that some of the review sites have changed their methodology and reporting over time.

Ricoh GR III:
Check Amazon price
Canon 5D Mark III:
Check Ebay offers

Other camera comparisons

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    Specifications: Ricoh GR III vs Canon 5D Mark III

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Ricoh GR III Canon 5D Mark III
    Camera Type Fixed lens compact camera Digital single lens reflex
    Camera Lens 28mm f/2.8 Canon EF mount lenses
    Launch Date February 2019 March 2012
    Launch Price USD 899 USD 3499
    Sensor Specs Ricoh GR III Canon 5D Mark III
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.5 x 15.6 mm 36.0 x 24.0 mm
    Sensor Area 366.6 mm2 864 mm2
    Sensor Diagonal 28.2 mm 43.3 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 24 Megapixels 22.1 Megapixels
    Image Resolution 6000 x 4000 pixels 5760 x 3840 pixels
    Pixel Pitch 3.91 μm 6.25 μm
    Pixel Density 6.55 MP/cm2 2.56 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60p Video 1080/30p Video
    ISO Setting 100-102400 ISO 100-25600 ISO
    ISO Boost no Enhancement 50-102400 ISO
    Image Processor GR Engine VI DIGIC 5+
    DXO Sensor Quality (score) .. 81
    DXO Color Depth (bits) .. 24.0
    DXO Dynamic Range (EV) .. 11.7
    DXO Low Light (ISO) .. 2293
    Screen Specs Ricoh GR III Canon 5D Mark III
    Viewfinder Type Viewfinder optional Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.71x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.2 inch
    LCD Resolution 1037k dots 1040k dots
    LCD Attachment Fixed screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Ricoh GR III Canon 5D Mark III
    Autofocus System On-Sensor Phase-detect Phase-detect AF
    Continuous Shooting 4 shutter flaps/s 6 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards CF or SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I no
    Connectivity Specs Ricoh GR III Canon 5D Mark III
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 3.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Ricoh GR III Canon 5D Mark III
    Environmental SealingNot weather sealedWeathersealed body
    Battery Type DB-110 power pack LP-E6 power pack
    Battery Life (CIPA)200 shots per charge950 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 109 x 62 x 33 mm
    (4.3 x 2.4 x 1.3 in)
    152 x 116 x 76 mm
    (6.0 x 4.6 x 3.0 in)
    Camera Weight 257 g (9.1 oz) 950 g (33.5 oz)

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