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Canon 1D Mark III vs R3

The Canon EOS-1D Mark III and the Canon EOS R3 are two professional cameras that were revealed to the public, respectively, in February 2007 and September 2021. The 1D Mark III is a DSLR, while the R3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-H (1D Mark III) and a full frame (R3) sensor. The 1D Mark III has a resolution of 10.1 megapixels, whereas the R3 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 1D Mark III
versus
Canon R3
Canon 1D Mark III   Canon R3
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Canon RF mount lenses
10.1 MP – APS-H sensor 24 MP – Full Frame sensor
no Video 6K/60p Video
ISO 100-3,200 (50 - 6,400) ISO 100-51,200 (50 - 204,800)
Optical viewfinder Electronic viewfinder (5760k dots)
3.0" LCD – 230k dots 3.2" LCD – 4150k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
10 shutter flaps per second 12 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
2200 shots per battery charge760 shots per battery charge
156 x 157 x 80 mm, 1155 g 150 x 143 x 87 mm, 1015 g
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Check R3 price at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D Mark III and the Canon EOS R3? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon 1D Mark III and the Canon R3. 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 1D Mark III vs Canon R3
Compare 1D Mark III versus R3 top
Comparison 1D Mark III or R3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon R3 is notably smaller (12 percent) than the Canon 1D Mark III. Moreover, the R3 is markedly lighter (12 percent) than the 1D 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 since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the 1D Mark III gets 2200 shots out of its Canon LP-E4 battery, while the R3 can take 760 images on a single charge of its Canon LP-E19 power pack. As can be seen in the images above, both cameras have a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. The power pack in the R3 can be charged via the USB port, which can be very convenient 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, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D Mark III 156 mm 157 mm 80 mm 1155 g 2200 Y Feb 2007 4,499ebay.com
2.
 
Canon R3 150 mm 143 mm 87 mm 1015 g 760 Y Sep 2021 5,999 amazon.com
3.
 
Canon R6 Mark II 138 mm 98 mm 88 mm 670 g 450 Y Nov 2022 2,499 amazon.com
4.
 
Canon 1D X Mark III 158 mm 168 mm 83 mm 1440 g 2850 Y Jan 2020 6,499 amazon.com
5.
 
Canon R5 138 mm 98 mm 88 mm 738 g 320 Y Jul 2020 3,899 amazon.com
6.
 
Canon R6 138 mm 98 mm 88 mm 680 g 360 Y Jul 2020 2,499 amazon.com
7.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
8.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499ebay.com
9.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999ebay.com
10.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499ebay.com
11.
 
Canon 1Ds Mark III 150 mm 160 mm 80 mm 1385 g 1800 Y Aug 2007 7,999ebay.com
12.
 
Canon 1D Mark II N 156 mm 158 mm 80 mm 1565 g 1200 Y Aug 2005 3,999ebay.com
13.
 
Canon 1D Mark II 156 mm 158 mm 80 mm 1535 g 1200 Y Jan 2004 4,499ebay.com
14.
 
Canon 1Ds 156 mm 158 mm 80 mm 1265 g 600 Y Sep 2002 8,999ebay.com
15.
 
Leica SL2-S 146 mm 107 mm 83 mm 931 g 510 Y Dec 2020 4,895 amazon.com
16.
 
Nikon D3 160 mm 157 mm 88 mm 1300 g 4300 Y Aug 2007 4,999ebay.com
17.
 
Nikon D2Xs 158 mm 150 mm 86 mm 1252 g 3800 Y Jun 2006 4,699ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 1D Mark III was launched at a somewhat lower price (by 25 percent) than the R3, which makes it more attractive for photographers on a tight budget. 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.

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.

Of the two cameras under consideration, the Canon 1D Mark III features an APS-H sensor and the Canon R3 a full frame sensor. The sensor area in the R3 is 65 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, the R3 uses a more advanced image processing engine (DIGIC X) than the 1D Mark III (DIGIC III), with benefits for noise reduction, color accuracy, and processing speed.

Canon 1D Mark III and Canon R3 sensor measures

With 24MP, the R3 offers a higher resolution than the 1D Mark III (10.1MP), but the R3 has smaller individual pixels (pixel pitch of 6.00μm versus 7.21μm for the 1D Mark III). Yet, the R3 is a much more recent model (by 14 years and 6 months) than the 1D Mark III, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Canon R3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the R3 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon 1D Mark III are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.

The R3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS-1D Mark III has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 50-6400. The corresponding ISO settings for the Canon EOS R3 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the 1D Mark III is build around a CMOS sensor, while the R3 uses a Stacked 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.

1D Mark III versus R3 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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"). Of the two cameras under consideration, the R3 offers substantially better image quality than the 1D Mark III (overall score 25 points higher). The advantage is based on 2.3 bits higher color depth, 3 EV in additional dynamic range, and 1.9 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 1D Mark III APS-H 10.1 3888 2592none22.711.7107871
2.
 
Canon R3 Full Frame 24.0 6000 40006K/60p25.014.7408696
3.
 
Canon R6 Mark II Full Frame 24.0 6000 40004k/60p25.414.6315496
4.
 
Canon 1D X Mark III Full Frame 20.0 5472 36484K/60p24.214.5324891
5.
 
Canon R5 Full Frame 44.8 8192 54648K/30p25.314.6304295
6.
 
Canon R6 Full Frame 20.0 5472 36484k/60p24.214.3339490
7.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
8.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
9.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
10.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
11.
 
Canon 1Ds Mark III Full Frame 21.0 5616 3744none24.012.0166380
12.
 
Canon 1D Mark II N APS-H 8.2 3504 2336none22.311.297566
13.
 
Canon 1D Mark II APS-H 8.2 3504 2336none22.311.1100366
14.
 
Canon 1Ds Full Frame 11.0 4064 2704none21.811.095463
15.
 
Leica SL2-S Full Frame 24.0 6000 40004K/60p25.214.1350495
16.
 
Nikon D3 Full Frame 12.1 4256 2832none23.512.2229081
17.
 
Nikon D2Xs APS-C 12.2 4288 2848none22.210.948959
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but can also record movies. The R3 indeed provides for movie recording, while the 1D Mark III does not. The highest resolution format that the R3 can use is 6K/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the R3 has an electronic viewfinder (5760k dots), while the 1D 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 R3 has a higher magnification than the one of the 1D Mark III (0.76x vs 0.58x), 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 1D Mark III, the Canon R3, and comparable cameras.

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Core Features
# image 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 1D Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 10.0/s n n
2.
 
Canon R35760 Y3.2 / 4150 swivel Y 1/8000s 12.0/s n Y
3.
 
Canon R6 Mark II3690 n3.0 / 1620 swivel Y 1/8000s 12.0/s n Y
4.
 
Canon 1D X Mark IIIoptical Y3.2 / 2100 fixed Y 1/8000s 20.0/s n n
5.
 
Canon R55760 Y3.2 / 2100 swivel Y 1/8000s 12.0/s n Y
6.
 
Canon R63690 n3.0 / 1620 swivel Y 1/8000s 12.0/s n Y
7.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
8.
 
Canon 5D Mark IIIoptical Y3.2 / 1040 fixed n 1/8000s 6.0/s n n
9.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
10.
 
Canon 5D Mark IIoptical Y3.0 / 920 fixed n 1/8000s 3.9/s n n
11.
 
Canon 1Ds Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 5.0/s n n
12.
 
Canon 1D Mark II Noptical Y2.5 / 230 fixed n 1/8000s 8.5/s n n
13.
 
Canon 1D Mark IIoptical Y2.0 / 230 fixed n 1/8000s 8.3/s n n
14.
 
Canon 1Dsoptical Y2.0 / 120 fixed n 1/8000s 3.0/s n n
15.
 
Leica SL2-S5760 Y3.2 / 2100 fixed Y 1/8000s 20.0/s n Y
16.
 
Nikon D3optical Y3.0 / 922 fixed n 1/8000s 11.0/s n n
17.
 
Nikon D2Xsoptical Y2.5 / 230 fixed n 1/8000s 5.0/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
padding

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The R3 has a touchscreen, while the 1D Mark III has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The R3 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 1D Mark 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 R3 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 R3 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 1D Mark III writes its imaging data to Compact Flash or SDHC cards, while the R3 uses CFexpress (type B) or SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The R3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the 1D Mark III cannot take advantage of Ultra High Speed SD cards.

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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-1D Mark III and Canon EOS R3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 1D Mark IIIY- / ----2.0---
2.
 
Canon R3Ystereo / monoYYmicro3.2Y-Y
3.
 
Canon R6 Mark IIYstereo / monoYYmicro3.2Y-Y
4.
 
Canon 1D X Mark IIIYmono / monoYYmini3.1Y-Y
5.
 
Canon R5Ymono / monoYYmicro3.2Y-Y
6.
 
Canon R6Ymono / monoYYmicro3.2Y-Y
7.
 
Canon 5DS RYmono / monoY-mini3.0---
8.
 
Canon 5D Mark IIIYmono / monoYYmini2.0---
9.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
10.
 
Canon 5D Mark IIYmono / monoY-mini2.0---
11.
 
Canon 1Ds Mark IIIYmono / ----2.0---
12.
 
Canon 1D Mark II NY- / ----1.1---
13.
 
Canon 1D Mark IIY- / ----1.1---
14.
 
Canon 1DsY- / ----FW---
15.
 
Leica SL2-SYstereo / monoYYfull3.2Y-Y
16.
 
Nikon D3Y- / ---mini2.0---
17.
 
Nikon D2XsY- / ----2.0---
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It is notable that the R3 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 1D Mark III does not provide wifi capability.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

The R3 is a recent model that features in the current product line-up of Canon. In contrast, the 1D Mark III has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the 1D Mark III was succeeded by the Canon 1D Mark IV. Further information on the features and operation of the 1D Mark III and R3 can be found, respectively, in the Canon 1D Mark III Manual (free pdf) or the online Canon R3 Manual.

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Review summary

So what is the bottom line? Is the Canon 1D Mark III better than the Canon R3 or vice versa? A synthesis of the relative strong points of each of the models is listed below.


Reasons to prefer the Canon EOS-1D Mark III:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Longer lasting: Can take more shots (2200 versus 760) on a single battery charge.
  • More affordable: Was introduced into a lower priced segment (25 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2007).


Arguments in favor of the Canon EOS R3:

  • More detail: Has more megapixels (24 vs 10.1MP), which boosts linear resolution by 54%.
  • Better image quality: Scores substantially higher (25 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.3 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.9 stops ISO advantage).
  • Better jpgs: Has a more modern image processing engine (DIGIC X vs DIGIC III).
  • Broader imaging potential: Can capture not only stills but also 6K/60p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.58x).
  • 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 (4150k vs 230k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 10 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (150x143mm vs 156x157mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 140g or 12 percent) and is thus easier to take along.
  • 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.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • 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 14 years and 6 months of technical progress since the 1D Mark III launch.

If the count of individual advantages (bullet points above) is taken as a guide, the R3 is the clear winner of the contest (28 : 4 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 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.

1D Mark III 04:28 R3

How about other alternatives? Do the specifications of the Canon 1D Mark III and the Canon R3 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 1D Mark III or the R3. 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.

Expert reviews

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], 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 1D Mark III............ Feb 2007 4,499ebay.com
2.
 
Canon R35/5o4.5/5..5/54.5/5 Sep 2021 5,999 amazon.com
3.
 
Canon R6 Mark II5/5+ +4.5/591/1004.5/55/5 Nov 2022 2,499 amazon.com
4.
 
Canon 1D X Mark III..+ +5/5..4.5/54/5 Jan 2020 6,499 amazon.com
5.
 
Canon R54.5/5+4/591/1004.5/54.5/5 Jul 2020 3,899 amazon.com
6.
 
Canon R65/5+ +4/590/1004.5/55/5 Jul 2020 2,499 amazon.com
7.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
8.
 
Canon 5D Mark III..+ +..82/1004.5/54.5/5 Mar 2012 3,499ebay.com
9.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 4,999ebay.com
10.
 
Canon 5D Mark II4/591/100..79/1004/5.. Sep 2008 3,499ebay.com
11.
 
Canon 1Ds Mark III......+ +4.5/5.. Aug 2007 7,999ebay.com
12.
 
Canon 1D Mark II N............ Aug 2005 3,999ebay.com
13.
 
Canon 1D Mark II......+ +.... Jan 2004 4,499ebay.com
14.
 
Canon 1Ds......+ +.... Sep 2002 8,999ebay.com
15.
 
Leica SL2-S4/5..4/5..4.5/54.5/5 Dec 2020 4,895 amazon.com
16.
 
Nikon D3......+ +5/54.5/5 Aug 2007 4,999ebay.com
17.
 
Nikon D2Xs............ Jun 2006 4,699ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon 1D Mark III vs Canon R3

    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 1D Mark III Canon R3
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Canon RF mount lenses
    Launch Date February 2007 September 2021
    Launch Price USD 4,499 USD 5,999
    Sensor Specs Canon 1D Mark III Canon R3
    Sensor Technology CMOS Stacked BSI-CMOS
    Sensor Format APS-H Sensor Full Frame Sensor
    Sensor Size 28.1 x 18.7 mm 36.0 x 24.0 mm
    Sensor Area 525.47 mm2 864 mm2
    Sensor Diagonal 33.8 mm 43.3 mm
    Crop Factor 1.3x 1.0x
    Sensor Resolution 10.1 Megapixels 24 Megapixels
    Image Resolution 3888 x 2592 pixels 6000 x 4000 pixels
    Pixel Pitch 7.21 μm 6.00 μm
    Pixel Density 1.92 MP/cm2 2.78 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 6K/60p Video
    ISO Setting 100 - 3,200 ISO 100 - 51,200 ISO
    ISO Boost 50 - 6,400 ISO 50 - 204,800 ISO
    Image Processor DIGIC III DIGIC X
    DXO Sensor Quality (score) 71 96
    DXO Color Depth (bits) 22.7 25
    DXO Dynamic Range (EV) 11.7 14.7
    DXO Low Light (ISO) 1078 4086
    Screen Specs Canon 1D Mark III Canon R3
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.58x 0.76x
    Viewfinder Resolution 5760k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 230k dots 4150k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon 1D Mark III Canon R3
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 10 shutter flaps/s 12 shutter flaps/s
    Shutter Life Expectancy300 000 actuations300 000 actuations
    Electronic Shutterno E-Shutterup to 1/64000s
    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 SDHC cards CFexB or SDXC cards
    Single or Dual Card Slots Dual card slots Dual card slots
    UHS card support no UHS-II
    Connectivity Specs Canon 1D Mark III Canon R3
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 2.0 USB 3.2
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Canon 1D Mark III Canon R3
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Canon LP-E4 Canon LP-E19
    Battery Life (CIPA)2200 shots per charge760 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 156 x 157 x 80 mm
    (6.1 x 6.2 x 3.1 in)
    150 x 143 x 87 mm
    (5.9 x 5.6 x 3.4 in)
    Camera Weight 1155 g (40.7 oz) 1015 g (35.8 oz)
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