Canon 5D Mark III vs Sony RX1R III
The Canon EOS 5D Mark III and the Sony Cyber-shot DSC-RX1R III are two digital cameras that were officially introduced, respectively, in March 2012 and July 2025. The 5D Mark III is a DSLR, while the RX1R III is a fixed lens compact. Both cameras are equipped with a full frame sensor. The Canon has a resolution of 22.1 megapixels, whereas the Sony provides 60.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 5D Mark III and the Sony Cyber-shot DSC-RX1R 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
The side-by-side display below illustrates the physical size and weight of the Canon 5D Mark III and the Sony RX1R III. 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.



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX1R III is considerably smaller (56 percent) than the Canon 5D Mark III. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX1R 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.
Concerning battery life, the 5D Mark III gets 950 shots out of its Canon LP-E6 battery, while the RX1R III can take 300 images on a single charge of its Sony NP-FW50 power pack. The power pack in the RX1R 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, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon 5D Mark III | 152 mm | 116 mm | 76 mm | 950 g | 950 | Y | Mar 2012 | US$ 3 499 | ebay.com | |
| 2. | Sony RX1R III | 113 mm | 68 mm | 88 mm | 498 g | 300 | Y | Jul 2025 | US$ 5 099 | amazon.com | |
| 3. | Canon 5D | 152 mm | 113 mm | 75 mm | 895 g | 400 | Y | Aug 2005 | US$ 3 299 | ebay.com | |
| 4. | Canon 5D Mark II | 152 mm | 114 mm | 75 mm | 850 g | 850 | Y | Sep 2008 | US$ 3 499 | ebay.com | |
| 5. | Canon 5D Mark IV | 151 mm | 116 mm | 76 mm | 890 g | 900 | Y | Aug 2016 | US$ 3 499 | amazon.com | |
| 6. | Canon 5DS | 152 mm | 116 mm | 76 mm | 930 g | 700 | Y | Feb 2015 | US$ 3 699 | ebay.com | |
| 7. | Canon 5DS R | 152 mm | 116 mm | 76 mm | 930 g | 700 | Y | Feb 2015 | US$ 3 699 | ebay.com | |
| 8. | Canon 6D | 145 mm | 111 mm | 71 mm | 770 g | 1090 | Y | Sep 2012 | US$ 2 099 | ebay.com | |
| 9. | Leica Q3 | 130 mm | 80 mm | 93 mm | 743 g | 350 | Y | May 2023 | US$ 5 999 | amazon.com | |
| 10. | Nikon D600 | 141 mm | 113 mm | 82 mm | 850 g | 900 | Y | Sep 2012 | US$ 2 099 | ebay.com | |
| 11. | Nikon D610 | 141 mm | 113 mm | 82 mm | 850 g | 900 | Y | Oct 2013 | US$ 1 999 | ebay.com | |
| 12. | Nikon D800 | 146 mm | 123 mm | 82 mm | 1000 g | 900 | Y | Feb 2012 | US$ 2 999 | ebay.com | |
| 13. | Nikon D800E | 146 mm | 123 mm | 82 mm | 1000 g | 900 | Y | Feb 2012 | US$ 3 299 | ebay.com | |
| 14. | Sony A7 | 127 mm | 94 mm | 48 mm | 474 g | 340 | Y | Oct 2013 | US$ 1 699 | ebay.com | |
| 15. | Sony A7R | 127 mm | 94 mm | 48 mm | 465 g | 340 | Y | Oct 2013 | US$ 2 299 | ebay.com | |
| 16. | Sony A7S | 127 mm | 94 mm | 48 mm | 489 g | 380 | Y | Apr 2014 | US$ 2 499 | ebay.com | |
| 17. | Sony RX1R II | 113 mm | 65 mm | 72 mm | 507 g | 220 | n | Oct 2015 | US$ 3 299 | ebay.com | |
| Note: 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. 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
The size of the imaging sensor is a crucial determinant 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 tend to be associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the RX1R III is 2 percent smaller. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Despite having a slightly smaller sensor, the RX1R III offers a higher resolution of 60.2 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 3.76μm versus 6.25μm for the 5D Mark III). However, it should be noted that the RX1R III is much more recent (by 13 years and 4 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 RX1R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony RX1R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX1R III for good quality output (200 dots per inch) amounts to 47.5 x 31.7 inches or 120.7 x 80.5 cm, for very good quality (250 dpi) 38 x 25.3 inches or 96.6 x 64.4 cm, and for excellent quality (300 dpi) 31.7 x 21.1 inches or 80.5 x 53.6 cm. The corresponding values for the Canon 5D Mark III are 28.8 x 19.2 inches or 73.2 x 48.8 cm for good quality, 23 x 15.4 inches or 58.5 x 39 cm for very good quality, and 19.2 x 12.8 inches or 48.8 x 32.5 cm for excellent quality prints.
The RX1R 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 Sony Cyber-shot DSC-RX1R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.
In terms of underlying technology, the 5D Mark III is build around a CMOS sensor, while the RX1R III uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

For many cameras, data on sensor performance has been reported by DXO Mark. 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.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon 5D Mark III | Full Frame | 22.1 | 5760 | 3840 | 1080/30p | 24.0 | 11.7 | 2293 | 81 | |
| 2. | Sony RX1R III | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 25.4 | 14.9 | 3417 | 97 | |
| 3. | Canon 5D | Full Frame | 12.7 | 4368 | 2912 | none | 22.9 | 11.1 | 1368 | 71 | |
| 4. | Canon 5D Mark II | Full Frame | 21.0 | 5616 | 3744 | 1080/30p | 23.7 | 11.9 | 1815 | 79 | |
| 5. | Canon 5D Mark IV | Full Frame | 30.1 | 6720 | 4480 | 4K/30p | 24.8 | 13.6 | 2995 | 91 | |
| 6. | Canon 5DS | Full Frame | 50.3 | 8688 | 5792 | 1080/30p | 24.7 | 12.4 | 2381 | 87 | |
| 7. | Canon 5DS R | Full Frame | 50.3 | 8688 | 5792 | 1080/30p | 24.6 | 12.4 | 2308 | 86 | |
| 8. | Canon 6D | Full Frame | 20.0 | 5472 | 3648 | 1080/30p | 23.8 | 12.1 | 2340 | 82 | |
| 9. | Leica Q3 | Full Frame | 60.3 | 9528 | 6328 | 8K/30p | 25.4 | 14.7 | 3216 | 96 | |
| 10. | Nikon D600 | Full Frame | 24.2 | 6016 | 4016 | 1080/30p | 25.1 | 14.2 | 2980 | 94 | |
| 11. | Nikon D610 | Full Frame | 24.2 | 6016 | 4016 | 1080/30p | 25.1 | 14.4 | 2925 | 94 | |
| 12. | Nikon D800 | Full Frame | 36.2 | 7360 | 4912 | 1080/30p | 25.3 | 14.4 | 2853 | 95 | |
| 13. | Nikon D800E | Full Frame | 36.2 | 7360 | 4912 | 1080/30p | 25.6 | 14.3 | 2979 | 96 | |
| 14. | Sony A7 | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.8 | 14.2 | 2248 | 90 | |
| 15. | Sony A7R | Full Frame | 36.2 | 7360 | 4912 | 1080/60p | 25.6 | 14.1 | 2746 | 95 | |
| 16. | Sony A7S | Full Frame | 12.0 | 4240 | 2832 | 1080/60p | 23.9 | 13.2 | 3702 | 87 | |
| 17. | Sony RX1R II | Full Frame | 42.2 | 7952 | 5304 | 1080/60p | 25.8 | 13.9 | 3204 | 97 | |
| Note: DXO values in italics represent estimates based on sensor size and age. | |||||||||||
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 RX1R III provides a better video resolution than the 5D Mark III. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. For example, the RX1R III has an electronic viewfinder (2360k dots), while the 5D Mark III has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the 5D Mark III has a higher magnification than the one of the RX1R III (0.71x vs 0.7x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 5D Mark III, the Sony RX1R III, and comparable cameras.

| Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon 5D Mark III | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 6.0/s | n | n | |
| 2. | Sony RX1R III | 2360 | n | 3.0 / 2360 | fixed | Y | 1/4000s | 5.0/s | n | n | |
| 3. | Canon 5D | optical | Y | 2.5 / 230 | fixed | n | 1/8000s | 3.0/s | n | n | |
| 4. | Canon 5D Mark II | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 3.9/s | n | n | |
| 5. | Canon 5D Mark IV | optical | Y | 3.2 / 1620 | fixed | Y | 1/8000s | 7.0/s | n | n | |
| 6. | Canon 5DS | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 5.0/s | n | n | |
| 7. | Canon 5DS R | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 5.0/s | n | n | |
| 8. | Canon 6D | optical | Y | 3.0 / 1040 | fixed | n | 1/4000s | 4.5/s | n | n | |
| 9. | Leica Q3 | 5760 | n | 3.0 / 1840 | tilting | Y | 1/2000s | 15.0/s | n | Y | |
| 10. | Nikon D600 | optical | Y | 3.0 / 921 | fixed | n | 1/4000s | 5.5/s | Y | n | |
| 11. | Nikon D610 | optical | Y | 3.2 / 921 | fixed | n | 1/4000s | 6.0/s | Y | n | |
| 12. | Nikon D800 | optical | Y | 3.2 / 921 | fixed | n | 1/8000s | 4.0/s | Y | n | |
| 13. | Nikon D800E | optical | Y | 3.2 / 921 | fixed | n | 1/8000s | 4.0/s | Y | n | |
| 14. | Sony A7 | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | n | |
| 15. | Sony A7R | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 4.0/s | n | n | |
| 16. | Sony A7S | 2400 | n | 3.0 / 921 | tilting | n | 1/8000s | 5.0/s | n | n | |
| 17. | Sony RX1R II | 2360 | n | 3.0 / 1229 | tilting | n | 1/4000s | 5.0/s | n | n | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One feature that is present on the 5D Mark III, but is missing on the RX1R 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 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 RX1R III 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 Sony RX1R 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 RX1R 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 RX1R III only has one slot. The RX1R III supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the 5D Mark III cannot take advantage of Ultra High Speed SD cards.
Connectivity comparison
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 Sony Cyber-shot DSC-RX1R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon 5D Mark III | Y | mono / mono | Y | Y | mini | 2.0 | - | - | - | |
| 2. | Sony RX1R III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 3. | Canon 5D | Y | - / - | - | - | - | 2.0 | - | - | - | |
| 4. | Canon 5D Mark II | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
| 5. | Canon 5D Mark IV | Y | mono / mono | Y | Y | mini | 3.0 | Y | Y | - | |
| 6. | Canon 5DS | Y | mono / mono | Y | - | mini | 3.0 | - | - | - | |
| 7. | Canon 5DS R | Y | mono / mono | Y | - | mini | 3.0 | - | - | - | |
| 8. | Canon 6D | Y | mono / mono | Y | - | mini | 2.0 | Y | - | - | |
| 9. | Leica Q3 | Y | stereo / mono | - | - | micro | 3.1 | Y | - | Y | |
| 10. | Nikon D600 | Y | mono / mono | Y | Y | mini | 2.0 | - | - | - | |
| 11. | Nikon D610 | Y | mono / mono | Y | Y | mini | 2.0 | - | - | - | |
| 12. | Nikon D800 | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 13. | Nikon D800E | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 14. | Sony A7 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 15. | Sony A7R | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 16. | Sony A7S | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 17. | Sony RX1R II | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - |
It is notable that the RX1R III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 5D Mark III does not provide wifi capability.
Studio photographers will appreciate that the Canon 5D Mark III (unlike the RX1R III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The RX1R III is a recent model that features in the current product line-up of Sony. In contrast, the 5D Mark III has been discontinued (but 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 Sony websites.
Review summary
So how do things add up? Which of the two cameras – the Canon 5D Mark III or the Sony RX1R III – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.7x).
- 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 5 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 300) on a single battery charge.
- 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).

Arguments in favor of the Sony Cyber-shot DSC-RX1R III:
- More detail: Has more megapixels (60.2 vs 22.1MP), which boosts linear resolution by 65%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More framing info: Has an electronic viewfinder that displays shooting data.
- More detailed LCD: Has a higher resolution rear screen (2360k vs 1040k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- 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 (113x68mm 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.
- Faster data transfer: Supports a more advanced USB protocol (3.2 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-II standard.
- More modern: Reflects 13 years and 4 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 RX1R III is the clear winner of the contest (18 : 12 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 Canon 5D Mark III and the Sony RX1R 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 5D Mark III or the RX1R III perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
Expert reviews
This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon 5D Mark III | .. | + + | .. | 82/100 | 4.5/5 | 4.5/5 | Mar 2012 | US$ 3 499 | ebay.com | |
| 2. | Sony RX1R III | .. | .. | .. | .. | .. | .. | Jul 2025 | US$ 5 099 | amazon.com | |
| 3. | Canon 5D | .. | 88/100 | .. | + + | o | .. | Aug 2005 | US$ 3 299 | ebay.com | |
| 4. | Canon 5D Mark II | 4/5 | 91/100 | .. | 79/100 | 4/5 | .. | Sep 2008 | US$ 3 499 | ebay.com | |
| 5. | Canon 5D Mark IV | 4.5/5 | + + | 4/5 | 87/100 | 4.5/5 | 4.5/5 | Aug 2016 | US$ 3 499 | amazon.com | |
| 6. | Canon 5DS | .. | + | .. | 83/100 | 4.5/5 | 4.5/5 | Feb 2015 | US$ 3 699 | ebay.com | |
| 7. | Canon 5DS R | 5/5 | + | .. | 83/100 | 5/5 | 4.5/5 | Feb 2015 | US$ 3 699 | ebay.com | |
| 8. | Canon 6D | 5/5 | + + | .. | 83/100 | 4.5/5 | 4.5/5 | Sep 2012 | US$ 2 099 | ebay.com | |
| 9. | Leica Q3 | 5/5 | .. | 4.5/5 | .. | .. | 4.5/5 | May 2023 | US$ 5 999 | amazon.com | |
| 10. | Nikon D600 | 4/5 | + + | .. | 87/100 | 5/5 | 4.5/5 | Sep 2012 | US$ 2 099 | ebay.com | |
| 11. | Nikon D610 | 4/5 | + + | .. | 87/100 | 4.5/5 | 4.5/5 | Oct 2013 | US$ 1 999 | ebay.com | |
| 12. | Nikon D800 | 5/5 | + + | .. | 82/100 | 5/5 | 5/5 | Feb 2012 | US$ 2 999 | ebay.com | |
| 13. | Nikon D800E | .. | .. | .. | 84/100 | 5/5 | 5/5 | Feb 2012 | US$ 3 299 | ebay.com | |
| 14. | Sony A7 | 5/5 | + + | .. | 80/100 | 5/5 | 5/5 | Oct 2013 | US$ 1 699 | ebay.com | |
| 15. | Sony A7R | 5/5 | + + | .. | 82/100 | 4.5/5 | 5/5 | Oct 2013 | US$ 2 299 | ebay.com | |
| 16. | Sony A7S | 4/5 | .. | .. | 86/100 | 4.5/5 | 5/5 | Apr 2014 | US$ 2 499 | ebay.com | |
| 17. | Sony RX1R II | 5/5 | .. | .. | 82/100 | .. | 4.5/5 | Oct 2015 | US$ 3 299 | ebay.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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.

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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 1D Mark IV vs Sony RX1R III
- Canon 5D Mark III vs Fujifilm X-Pro3
- Canon 5D Mark III vs Fujifilm XF10
- Canon 5D Mark III vs Leica M Typ 240
- Canon 5D Mark III vs Leica M11
- Canon 5D Mark III vs Nikon D200
- Canon 5D Mark III vs Panasonic TZ100
- Canon R8 vs Sony RX1R III
- Fujifilm X-Pro3 vs Sony RX1R III
- Olympus E-PL6 vs Sony RX1R III
- Sony A7C R vs Sony RX1R III
- Sony RX1R III vs Sony ZV-E10
Specifications: Canon 5D Mark III vs Sony RX1R 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 5D Mark III | Sony RX1R III |
|---|---|---|
| Camera Type | Digital single lens reflex | Fixed lens compact camera |
| Camera Lens | Canon EF mount lenses | 35mm f/2.0 |
| Launch Date | March 2012 | July 2025 |
| Launch Price | USD 3,499 | USD 5,099 |
| Sensor Specs | Canon 5D Mark III | Sony RX1R III |
| Sensor Technology | CMOS | BSI-CMOS |
| Sensor Format | Full Frame Sensor | Full Frame Sensor |
| Sensor Size | 36.0 x 24.0 mm | 35.7 x 23.8 mm |
| Sensor Area | 864 mm2 | 849.66 mm2 |
| Sensor Diagonal | 43.3 mm | 42.9 mm |
| Crop Factor | 1.0x | 1.0x |
| Sensor Resolution | 22.1 Megapixels | 60.2 Megapixels |
| Image Resolution | 5760 x 3840 pixels | 9504 x 6336 pixels |
| Pixel Pitch | 6.25 μm | 3.76 μm |
| Pixel Density | 2.56 MP/cm2 | 7.09 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 1080/30p Video | 4K/30p Video |
| ISO Setting | 100 - 25,600 ISO | 100 - 32,000 ISO |
| ISO Boost | 50 - 102,400 ISO | 50 - 102,400 ISO |
| Image Processor | DIGIC 5+ | BIONZ XR |
| 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 | Sony RX1R III |
| Viewfinder Type | Optical viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.71x | 0.7x |
| Viewfinder Resolution | 2360k dots | |
| Top-Level Screen | Control Panel | no Top Display |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.2inch | 3.0inch |
| LCD Resolution | 1040k dots | 2360k dots |
| LCD Attachment | Fixed screen | Fixed screen |
| Touch Input | no Touchscreen | Touchscreen |
| Shooting Specs | Canon 5D Mark III | Sony RX1R III |
| Focus System | Phase-detect AF | On-Sensor Phase-detect |
| Manual Focusing Aid | no Peaking Feature | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/8000s | 1/4000s |
| Continuous Shooting | 6 shutter flaps/s | 5 shutter flaps/s |
| Electronic Shutter | no E-Shutter | up to 1/8000s |
| Time-Lapse Photography | no Intervalometer | Intervalometer built-in |
| Fill Flash | no On-Board Flash | no On-Board Flash |
| Storage Medium | CF or SDXC cards | SDXC cards |
| Single or Dual Card Slots | Dual card slots | Single card slot |
| UHS card support | no | UHS-II |
| Connectivity Specs | Canon 5D Mark III | Sony RX1R III |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | no PC Sync |
| USB Connector | USB 2.0 | USB 3.2 |
| HDMI Port | mini HDMI | micro HDMI |
| Microphone Port | External MIC port | External MIC port |
| Headphone Socket | Headphone port | Headphone port |
| Wifi Support | no Wifi | Wifi built-in |
| Bluetooth Support | no Bluetooth | Bluetooth built-in |
| Body Specs | Canon 5D Mark III | Sony RX1R III |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon LP-E6 | Sony NP-FW50 |
| Battery Life (CIPA) | 950 shots per charge | 300 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) |
113 x 68 x 88 mm (4.4 x 2.7 x 3.5 in) |
| Camera Weight | 950 g (33.5 oz) | 498 g (17.6 oz) |

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