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Canon 5D Mark III vs Ricoh GR III

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

Headline Specifications
Canon 5D Mark III   Ricoh GR III
Canon 5D Mark III Ricoh GR III
Digital single lens reflex Fixed lens compact camera
Canon EF mount lenses 28mm f/2.8
22.1 MP, Full Frame Sensor 24 MP, APS-C Sensor
1080/30p Video 1080/60p Video
ISO 100-25600 (50-102400) ISO 100-102400
Optical viewfinder Viewfinder optional
3.2" LCD, 1040k 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 onlyIn-body stabilization
Weathersealed bodyNot weather sealed
950 shots per battery charge200 shots per battery charge
152 x 116 x 76 mm, 950 g 109 x 62 x 33 mm, 257 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 5D Mark III 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.

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

The physical size and weight of the Canon 5D Mark III and the Ricoh GR III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

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

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 (62 percent) than the Canon 5D Mark III. It is worth mentioning in this context that the 5D Mark III 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 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, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, 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
 
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
 
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 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 6D« » 5.7 in 4.4 in 2.8 in 27.2 oz 1090 Y Sep 2012 2,099- i Canon 6D
 
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
 
Canon 5D« » 6.0 in 4.4 in 3.0 in 31.6 oz 400 Y Aug 2005 3,299- i Canon 5D
 
Fujifilm XF10« » 4.4 in 2.5 in 1.6 in 9.8 oz 330 n Jul 2018 499 i i Fujifilm XF10
 
Nikon D610« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Oct 2013 1,999 i i Nikon D610
 
Nikon D600« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Sep 2012 2,099- i Nikon D600
 
Nikon D800« » 5.7 in 4.8 in 3.2 in 35.3 oz 900 Y Feb 2012 2,999- i Nikon D800
 
Nikon D800E« » 5.7 in 4.8 in 3.2 in 35.3 oz 900 Y Feb 2012 3,299- i Nikon D800E
 
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
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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The GR 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: Canon 5D Mark III vs Ricoh GR III

The size of the sensor inside a digital camera is one of the key determinants 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 5D Mark III 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.

Canon 5D Mark III and Ricoh GR III sensor measures

Despite having a smaller sensor, the GR III offers a slightly higher resolution of 24 megapixels, compared with 22.1 MP of the 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 Canon EOS 5D Mark III has a native sensitivity range from ISO 100 to ISO 25600, 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).

5D Mark III versus GR III MP

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 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
 
Canon 5D Mark III» Full Frame 22.1 5760 38401080/30p24.011.7229381Canon 5D Mark III
 
Ricoh GR III« APS-C 24.0 6000 40001080/60p----Ricoh GR III
 
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 6D« » Full Frame 20.0 5472 36481080/30p23.812.1234082Canon 6D
 
Canon 5D Mark II« » Full Frame 21.0 5616 37441080/30p23.711.9181579Canon 5D Mark II
 
Canon 5D« » Full Frame 12.7 4368 2912-22.911.1136871Canon 5D
 
Fujifilm XF10« » APS-C 24.0 6000 40004K/15p----Fujifilm XF10
 
Nikon D610« » Full Frame 24.2 6016 40161080/30p25.114.4292594Nikon D610
 
Nikon D600« » Full Frame 24.2 6016 40161080/30p25.114.2298094Nikon D600
 
Nikon D800« » Full Frame 36.2 7360 49121080/30p25.314.4285395Nikon D800
 
Nikon D800E« » Full Frame 36.2 7360 49121080/30p25.614.3297996Nikon D800E
 
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

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the GR III provides a faster frame rate than the 5D Mark III. It can shoot movie footage at 1080/60p, while the Canon is limited to 1080/30p.

 

Feature comparison: Canon 5D Mark III vs Ricoh GR 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 following table reports on some other key feature differences and similarities of the Canon 5D Mark III, the Ricoh GR III, and comparable 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
 
Canon 5D Mark III»optical Y 3.2 1040 fixed n 1/8000s 6.0 n n Canon 5D Mark III
 
Ricoh GR III«- n 3.0 1037 fixed Y 1/4000s 4.0 n Y Ricoh GR III
 
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 6D« »optical Y 3.0 1040 fixed n 1/4000s 4.5 n n Canon 6D
 
Canon 5D Mark II« »optical Y 3.0 920 fixed n 1/8000s 3.9 n n Canon 5D Mark II
 
Canon 5D« »optical Y 2.5 230 fixed n 1/8000s 3.0 n n Canon 5D
 
Fujifilm XF10« »- n 3.0 1040 fixed Y 1/4000s 6.0 Y n Fujifilm XF10
 
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 D800« »optical Y 3.2 921 fixed n 1/8000s 4.0 Y n Nikon D800
 
Nikon D800E« »optical Y 3.2 921 fixed n 1/8000s 4.0 Y n Nikon D800E
 
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

One feature that is present on the 5D Mark III, 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 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 5D Mark III writes its imaging data to Compact Flash or SDXC cards, while the GR III uses 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: Canon 5D Mark III vs Ricoh GR 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 Canon EOS 5D Mark III and Ricoh GR 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
 
Canon 5D Mark III»YmonomonoYYmini2.0---Canon 5D Mark III
 
Ricoh GR III«Ystereomono---3.0Y-YRicoh GR III
 
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 6D« »YmonomonoY-mini2.0Y--Canon 6D
 
Canon 5D Mark II« »YmonomonoY-mini2.0---Canon 5D Mark II
 
Canon 5D« »Y-----2.0---Canon 5D
 
Fujifilm XF10« »-stereomonoY-micro2.0Y-YFujifilm XF10
 
Nikon D610« »YmonomonoYYmini2.0---Nikon D610
 
Nikon D600« »YmonomonoYYmini2.0---Nikon D600
 
Nikon D800« »YmonomonoYYmini3.0---Nikon D800
 
Nikon D800E« »YmonomonoYYmini3.0---Nikon D800E
 
Panasonic GX9« »Ystereomono--micro2.0Y-YPanasonic GX9
 
Panasonic ZS200« »-stereomono--micro2.0Y--Panasonic ZS200
 
Ricoh GR II« »Ystereomono--micro2.0YY-Ricoh GR II
 
Ricoh GR« »Ymonomono--micro2.0---Ricoh GR

It is notable that the 5D Mark III 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.

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 Canon and Ricoh websites.


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

So what conclusions can be drawn? Which of the two cameras – the Canon 5D Mark III or the Ricoh GR III – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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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 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.
  • 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.
  • 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 2012).

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Arguments in favor 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: Has a touchscreen to facilitate handling and shooting adjustments.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Ready to shoot: Comes with an integrated lens, while the 5D Mark III requires a separate lens.
  • More compact: Is smaller (109x62mm vs 152x116mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 5D Mark III).
  • 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.
  • 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.

If the number of relative strengths (bullet points above) is taken as a guide, 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 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.

5D Mark III 14:15 GR III

How about other alternatives? Do the specifications of the Canon 5D Mark III 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 5D Mark III 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.

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

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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon 5D Mark III»+ +82/1004.5/55/54.5/5 Mar 2012 3,499- i Canon 5D Mark III
 
Ricoh GR III«-81/1004/5-- Feb 2019 899 i i Ricoh GR III
 
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 6D« »+ +83/1004.5/54.5/54.5/5 Sep 2012 2,099- i Canon 6D
 
Canon 5D Mark II« »91/10079/1004/55/5- Sep 2008 3,499- i Canon 5D Mark II
 
Canon 5D« »88/100+ +oo- Aug 2005 3,299- i Canon 5D
 
Fujifilm XF10« »-75/1004/5-4.5/5 Jul 2018 499 i i Fujifilm XF10
 
Nikon D610« »+ +87/1004.5/54.5/54.5/5 Oct 2013 1,999 i i Nikon D610
 
Nikon D600« »+ +87/1005/54.5/54.5/5 Sep 2012 2,099- i Nikon D600
 
Nikon D800« »+ +82/1005/55/55/5 Feb 2012 2,999- i Nikon D800
 
Nikon D800E« »-84/1005/54.5/55/5 Feb 2012 3,299- i Nikon D800E
 
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
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. 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.

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

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 5D Mark III 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 Specifications
    Camera Model Canon 5D Mark III Ricoh GR III
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Canon EF mount lenses 28mm f/2.8
    Launch Date March 2012 February 2019
    Launch Price USD 3499 USD 899
    Sensor Specs Canon 5D Mark III Ricoh GR III
    Sensor Technology CMOS CMOS
    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
    Crop Factor 1.0x 1.5x
    Sensor Resolution 22.1 Megapixels 24 Megapixels
    Image Resolution 5760 x 3840 pixels 6000 x 4000 pixels
    Pixel Pitch 6.25 μm 3.91 μm
    Pixel Density 2.56 MP/cm2 6.55 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 1080/60p Video
    ISO Setting 100-25600 ISO 100-102400 ISO
    ISO Boost 50-102400 ISO no Enhancement
    Image Processor DIGIC 5+ GR Engine VI
    DXO Sensor Quality (score) 81 ..
    DXO Color Depth (bits) 24.0 ..
    DXO Dynamic Range (EV) 11.7 ..
    DXO Low Light (ISO) 2293 ..
    Screen Specs Canon 5D Mark III Ricoh GR III
    Viewfinder Type Optical viewfinder Viewfinder optional
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.71x
    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 1040k dots 1037k dots
    LCD Attachment Fixed screen Fixed screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon 5D Mark III Ricoh GR III
    Autofocus System Phase-detect AF On-Sensor Phase-detect
    Continuous Shooting 6 shutter flaps/s 4 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or SDXC cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support no UHS-I
    Connectivity Specs Canon 5D Mark III Ricoh GR III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    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 Canon 5D Mark III Ricoh GR III
    Environmental SealingWeathersealed bodyNot weather sealed
    Battery Type LP-E6 power pack DB-110 power pack
    Battery Life (CIPA)950 shots per charge200 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 152 x 116 x 76 mm
    (6.0 x 4.6 x 3.0 in)
    109 x 62 x 33 mm
    (4.3 x 2.4 x 1.3 in)
    Camera Weight 950 g (33.5 oz) 257 g (9.1 oz)

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