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Canon 1D X Mark III vs Leica Q3

The Canon EOS-1D X Mark III and the Leica Q3 are two digital cameras that were revealed to the public, respectively, in January 2020 and May 2023. The 1DX Mark III is a DSLR, while the Q3 is a fixed lens compact. Both cameras are equipped with a full frame sensor. The Canon has a resolution of 20 megapixels, whereas the Leica provides 60.3 MP.

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

Headline Specifications
Canon 1D X Mark III
versus
Leica Q3
Canon 1D X Mark III   Leica Q3
Digital single lens reflex Fixed lens compact camera
Canon EF mount lenses 28mm f/1.7
20 MP – Full Frame sensor 60.3 MP – Full Frame sensor
4K/60p Video 8K/30p Video
ISO 100-102,400 (50 - 819,200) ISO 50-100,000
Optical viewfinder Electronic viewfinder (5760k dots)
3.2" LCD – 2100k dots 3.0" LCD – 1840k dots
Fixed touchscreen Tilting touchscreen
20 shutter flaps per second 15 shutter flaps per second
Weathersealed bodyWeathersealed body
2850 shots per battery charge350 shots per battery charge
158 x 168 x 83 mm, 1440 g 130 x 80 x 93 mm, 743 g
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Check 1DX Mark III price at
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Check Q3 price at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D X Mark III and the Leica Q3? 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 X Mark III and the Leica Q3. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Canon 1D X Mark III vs Leica Q3
Compare 1DX Mark III versus Q3 top
Comparison 1DX Mark III or Q3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica Q3 is considerably smaller (61 percent) than the Canon 1D X 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 Q3 has a lens built in, whereas the 1DX 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 1DX Mark III and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the 1DX Mark III gets 2850 shots out of its Canon LP-E19 battery, while the Q3 can take 350 images on a single charge of its Leica BP-SCL6 power pack. As can be seen in the images above, the 1DX Mark III has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. The power pack in the Q3 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. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon 1D X Mark III 158 mm 168 mm 83 mm 1440 g 2850 Y Jan 2020 EUR 7 299 amazon.com
2.
 
Leica Q3 130 mm 80 mm 93 mm 743 g 350 Y May 2023 EUR 5 999 amazon.com
3.
 
Canon 1D 156 mm 158 mm 80 mm 1585 g 500 Y Sep 2001 EUR 6 499ebay.com
4.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 EUR 4 699ebay.com
5.
 
Canon 1Ds Mark II 156 mm 158 mm 80 mm 1215 g 1200 Y Sep 2004 EUR 7 999ebay.com
6.
 
Canon 1Ds Mark III 150 mm 160 mm 80 mm 1385 g 1800 Y Aug 2007 EUR 7 999ebay.com
7.
 
Canon 1D C 158 mm 164 mm 83 mm 1545 g 1120 Y Apr 2012 EUR 13 999ebay.com
8.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 EUR 6 299ebay.com
9.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 EUR 6 299ebay.com
10.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 EUR 3 299ebay.com
11.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 EUR 3 299ebay.com
12.
 
Fujifilm GFX 50S 148 mm 94 mm 91 mm 740 g 400 Y Sep 2016 EUR 6 499ebay.com
13.
 
Leica M Typ 240 139 mm 80 mm 42 mm 680 g 500 Y Sep 2012 EUR 6 199ebay.com
14.
 
Leica M11 139 mm 80 mm 39 mm 640 g 700 Y Jan 2022 EUR 8 349 amazon.com
15.
 
Leica Q2 130 mm 80 mm 92 mm 718 g 370 Y Mar 2019 EUR 4 799 amazon.com
16.
 
Leica SL3 141 mm 108 mm 85 mm 769 g 320 Y Mar 2024 EUR 6 799 amazon.com
17.
 
Nikon D6 160 mm 163 mm 92 mm 1270 g 3580 Y Feb 2020 EUR 7 299 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The Q3 was launched at a lower price than the 1DX 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

The size of the imaging sensor is a crucial determinant 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a full frame sensor and have a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the review cameras among the large-sensor cameras that aim for top notch image quality. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 1D X Mark III and Leica Q3 sensor measures

While the two cameras under review share the same sensor size, the Q3 offers a higher resolution of 60.3 megapixels, compared with 20 MP of the 1DX Mark III. This megapixels advantage translates into a 74 percent gain in linear resolution. On the other hand, these sensor specs imply that the Q3 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.79μm versus 6.57μm for the 1DX Mark III). However, it should be noted that the Q3 is much more recent (by 3 years and 4 months) than the 1DX Mark III, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the Q3 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Leica Q3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Q3 for good quality output (200 dots per inch) amounts to 47.6 x 31.6 inches or 121 x 80.4 cm, for very good quality (250 dpi) 38.1 x 25.3 inches or 96.8 x 64.3 cm, and for excellent quality (300 dpi) 31.8 x 21.1 inches or 80.7 x 53.6 cm. The corresponding values for the Canon 1D X Mark III are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.

The Canon EOS-1D X Mark III has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 50-819200. The corresponding ISO settings for the Leica Q3 are ISO 50 to ISO 100000 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

1DX Mark III versus Q3 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 1D X Mark III Full Frame 20.0 5472 36484K/60p24.214.5324891
2.
 
Leica Q3 Full Frame 60.3 9528 63288K/30p25.414.7321696
3.
 
Canon 1D APS-H 4.1 2496 1662none........
4.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
5.
 
Canon 1Ds Mark II Full Frame 16.6 4992 3328none23.311.3148074
6.
 
Canon 1Ds Mark III Full Frame 21.0 5616 3744none24.012.0166380
7.
 
Canon 1D C Full Frame 17.9 5184 34564K/24p24.313.0215585
8.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
9.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
10.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
11.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
12.
 
Fujifilm GFX 50S Medium Format 51.1 8256 61921080/30p25.414.1297796
13.
 
Leica M Typ 240 Full Frame 23.7 5952 39761080/25p24.013.3186084
14.
 
Leica M11 Full Frame 60.3 9528 6328none26.314.83376100
15.
 
Leica Q2 Full Frame 46.7 8368 55844K/30p26.413.5249196
16.
 
Leica SL3 Full Frame 60.3 9520 63368K/30p25.414.8329597
17.
 
Nikon D6 Full Frame 20.7 5568 37124K/30p25.314.3288695
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 can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the Q3 provides a better video resolution than the 1DX Mark III. It can shoot movie footage at 8K/30p, while the Canon is limited to 4K/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 Q3 has an electronic viewfinder (5760k dots), while the 1DX 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 Q3 has a higher magnification than the one of the 1DX Mark III (0.79x vs 0.76x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 1D X Mark III and Leica Q3 along with similar information for a selection of comparators.

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Core Features
  empty 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 X Mark IIIoptical Y3.2 / 2100 fixed Y 1/8000s 20.0/s n n
2.
 
Leica Q35760 n3.0 / 1840 tilting Y 1/2000s 15.0/s n Y
3.
 
Canon 1Doptical Y2.0 / 120 fixed n 1/16000s 8.0/s n n
4.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
5.
 
Canon 1Ds Mark IIoptical Y2.0 / 230 fixed n 1/8000s 4.0/s n n
6.
 
Canon 1Ds Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 5.0/s n n
7.
 
Canon 1D Coptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
8.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
9.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
10.
 
Canon 5D Mark IIoptical Y3.0 / 920 fixed n 1/8000s 3.9/s n n
11.
 
Canon 5D Mark IIIoptical Y3.2 / 1040 fixed n 1/8000s 6.0/s n n
12.
 
Fujifilm GFX 50Soptional Y3.2 / 2360 full-flex Y 1/4000s 3.0/s n n
13.
 
Leica M Typ 240optical n3.0 / 920 fixed n 1/4000s 3.0/s n n
14.
 
Leica M11optical n3.0 / 2333 fixed Y 1/4000s 4.5/s n n
15.
 
Leica Q23680 n3.0 / 1040 fixed Y 1/2000s 10.0/s n Y
16.
 
Leica SL35760 Y3.2 / 2333 tilting Y 1/8000s 5.0/s n Y
17.
 
Nikon D6optical Y3.2 / 2359 fixed Y 1/8000s 14.0/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 1DX Mark III, but is missing on the Q3 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 Q3 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 1D X Mark III and the Leica Q3 both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The 1DX Mark III writes its imaging data to CFexpress (type B) cards, while the Q3 uses SDXC cards. The 1DX Mark III features dual card slots, which can be very useful in case a memory card fails. In contrast, the Q3 only has one slot.

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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 X Mark III and Leica Q3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 1D X Mark IIIYmono / monoYYmini3.1Y-Y
2.
 
Leica Q3Ystereo / mono--micro3.1Y-Y
3.
 
Canon 1DY- / ----FW---
4.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
5.
 
Canon 1Ds Mark IIY- / ----2.0---
6.
 
Canon 1Ds Mark IIIYmono / ----2.0---
7.
 
Canon 1D CYmono / monoYYmini2.0---
8.
 
Canon 1D XYmono / -Y-mini2.0---
9.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
10.
 
Canon 5D Mark IIYmono / monoY-mini2.0---
11.
 
Canon 5D Mark IIIYmono / monoYYmini2.0---
12.
 
Fujifilm GFX 50SYstereo / monoYYmicro3.0Y--
13.
 
Leica M Typ 240Ystereo / mono---2.0---
14.
 
Leica M11Y- / ----3.2Y-Y
15.
 
Leica Q2Ystereo / mono----Y-Y
16.
 
Leica SL3Ystereo / monoYYfull3.1Y-Y
17.
 
Nikon D6Ystereo / monoYYmini3.1Y-Y

It is notable that the 1DX Mark III has a microphone port, which is missing on the Q3. 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 1D X Mark III (unlike the Q3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the 1DX Mark III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 1DX Mark III and the Q3 are recent models that are part of the current product line-up. The 1DX Mark III replaced the earlier Canon 1DX Mark II, while the Q3 followed on from the Leica Q2. Further information on the features and operation of the 1DX Mark III and Q3 can be found, respectively, in the Canon 1D X Mark III Manual (free pdf) or the online Leica Q3 Manual.

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Review summary

So what is the bottom line? Is the Canon 1D X Mark III better than the Leica Q3 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Canon EOS-1D X 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.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 1840k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • Faster burst: Shoots at higher frequency (20 vs 15 flaps/sec) to capture the decisive moment.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (2850 versus 350) on a single battery charge.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • 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 January 2020).

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Advantages of the Leica Q3:

  • More detail: Has more megapixels (60.3 vs 20MP), which boosts linear resolution by 74%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (8K/30p vs 4K/60p).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.79x vs 0.76x).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Ready to shoot: Comes with an integrated lens, while the 1DX Mark III requires a separate lens.
  • More compact: Is smaller (130x80mm vs 158x168mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 1DX 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.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 3 years and 4 months of technical progress since the 1DX Mark III launch.

If the number of relative strengths (bullet points above) is taken as a guide, the 1DX Mark III comes out slightly ahead of the Q3 (16 : 15 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.

1DX Mark III 16:15 Q3

How about other alternatives? Do the specifications of the Canon 1D X Mark III and the Leica Q3 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 1DX Mark III or the Q3. 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 why hands-on reviews by experts are important. 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon 1D X Mark III..+ +5/5..4.5/54/5 Jan 2020 EUR 7 299 amazon.com
2.
 
Leica Q35/5..4.5/5....4.5/5 May 2023 EUR 5 999 amazon.com
3.
 
Canon 1D......+ +.... Sep 2001 EUR 6 499ebay.com
4.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 EUR 4 699ebay.com
5.
 
Canon 1Ds Mark II......+ +.... Sep 2004 EUR 7 999ebay.com
6.
 
Canon 1Ds Mark III......+ +4.5/5.. Aug 2007 EUR 7 999ebay.com
7.
 
Canon 1D C............ Apr 2012 EUR 13 999ebay.com
8.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 EUR 6 299ebay.com
9.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 EUR 6 299ebay.com
10.
 
Canon 5D Mark II4/591/100..79/1004/5.. Sep 2008 EUR 3 299ebay.com
11.
 
Canon 5D Mark III..+ +..82/1004.5/54.5/5 Mar 2012 EUR 3 299ebay.com
12.
 
Fujifilm GFX 50S....4.5/585/1005/54.5/5 Sep 2016 EUR 6 499ebay.com
13.
 
Leica M Typ 2404/5......4/5.. Sep 2012 EUR 6 199ebay.com
14.
 
Leica M114.5/5..4.5/5..4.5/54.5/5 Jan 2022 EUR 8 349 amazon.com
15.
 
Leica Q2....4.5/584/1004.5/54/5 Mar 2019 EUR 4 799 amazon.com
16.
 
Leica SL3....4.5/5....4.5/5 Mar 2024 EUR 6 799 amazon.com
17.
 
Nikon D6....4/5..4.5/54.5/5 Feb 2020 EUR 7 299 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Check 1DX Mark III price at
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Check Q3 price at
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Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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 X Mark III vs Leica Q3

    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 X Mark III Leica Q3
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Canon EF mount lenses 28mm f/1.7
    Launch Date January 2020 May 2023
    Launch Price USD 6,499 USD 5,999
    Sensor Specs Canon 1D X Mark III Leica Q3
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Full Frame Sensor
    Sensor Size 36.0 x 24.0 mm 36.0 x 24.0 mm
    Sensor Area 864 mm2 864 mm2
    Sensor Diagonal 43.3 mm 43.3 mm
    Crop Factor 1.0x 1.0x
    Sensor Resolution 20 Megapixels 60.3 Megapixels
    Image Resolution 5472 x 3648 pixels 9528 x 6328 pixels
    Pixel Pitch 6.57 μm 3.79 μm
    Pixel Density 2.31 MP/cm2 6.98 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/60p Video 8K/30p Video
    ISO Setting 100 - 102,400 ISO 50 - 100,000 ISO
    ISO Boost 50 - 819,200 ISO no Enhancement
    DXO Sensor Quality (score) 91 ..
    DXO Color Depth (bits) 24.2 ..
    DXO Dynamic Range (EV) 14.5 ..
    DXO Low Light (ISO) 3248 ..
    Screen Specs Canon 1D X Mark III Leica Q3
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.79x
    Viewfinder Resolution 5760k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 2100k dots 1840k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon 1D X Mark III Leica Q3
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/2000s
    Continuous Shooting 20 shutter flaps/s 15 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CFexB cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    Connectivity Specs Canon 1D X Mark III Leica Q3
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.1 USB 3.1
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Geotagging GPS built-in no internal GPS
    Body Specs Canon 1D X Mark III Leica Q3
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Canon LP-E19 Leica BP-SCL6
    Battery Life (CIPA)2850 shots per charge350 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 158 x 168 x 83 mm
    (6.2 x 6.6 x 3.3 in)
    130 x 80 x 93 mm
    (5.1 x 3.1 x 3.7 in)
    Camera Weight 1440 g (50.8 oz) 743 g (26.2 oz)
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    Check Q3 price at
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