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Canon 40D vs Leica Q3

The Canon EOS 40D and the Leica Q3 are two enthusiast cameras that were officially introduced, respectively, in August 2007 and May 2023. The 40D is a DSLR, while the Q3 is a fixed lens compact. The cameras are based on an APS-C (40D) and a full frame (Q3) sensor. The Canon has a resolution of 10.1 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 40D
versus
Leica Q3
Canon 40D   Leica Q3
Digital single lens reflex Fixed lens compact camera
Canon EF mount lenses 28mm f/1.7
10.1 MP – APS-C sensor 60.3 MP – Full Frame sensor
no Video 8K/30p Video
ISO 100-1,600 (100 - 3,200) ISO 50-100,000
Optical viewfinder Electronic viewfinder (5760k dots)
3.0" LCD – 230k dots 3.0" LCD – 1840k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
6.5 shutter flaps per second 15 shutter flaps per second
not weather sealedWeathersealed body
750 shots per battery charge350 shots per battery charge
146 x 108 x 74 mm, 822 g 130 x 80 x 93 mm, 743 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 40D 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 40D and the Leica Q3. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Canon 40D vs Leica Q3
Compare 40D versus Q3 top
Comparison 40D 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 (34 percent) than the Canon 40D. It is noteworthy in this context that the Q3 is splash and dust-proof, while the 40D does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the Q3 has a lens built in, whereas the 40D 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 40D and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the 40D gets 750 shots out of its Canon BP-511A battery, while the Q3 can take 350 images on a single charge of its Leica BP-SCL6 power pack. 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. 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.

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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 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 US$ 1 299ebay.com
2.
 
Leica Q3 130 mm 80 mm 93 mm 743 g 350 Y May 2023 US$ 5 999 amazon.com
3.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 US$ 1 999ebay.com
4.
 
Canon 20D 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 US$ 1 499ebay.com
5.
 
Canon 30D 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 US$ 1 399ebay.com
6.
 
Canon 50D 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 US$ 1 299ebay.com
7.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 US$ 1 399ebay.com
8.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 US$ 449ebay.com
9.
 
Canon XS 126 mm 98 mm 65 mm 502 g 500 n Jun 2008 US$ 449ebay.com
10.
 
Canon XSi 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 US$ 799ebay.com
11.
 
Canon XTi 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 US$ 799ebay.com
12.
 
Leica M Typ 240 139 mm 80 mm 42 mm 680 g 500 Y Sep 2012 US$ 6 949ebay.com
13.
 
Leica M10 139 mm 80 mm 39 mm 660 g 210 Y Jan 2017 US$ 6 599ebay.com
14.
 
Leica M11 139 mm 80 mm 39 mm 640 g 700 Y Jan 2022 US$ 8 999 amazon.com
15.
 
Leica Q2 130 mm 80 mm 92 mm 718 g 370 Y Mar 2019 US$ 4 999 amazon.com
16.
 
Leica SL3 141 mm 108 mm 85 mm 769 g 320 Y Mar 2024 US$ 6 999 amazon.com
17.
 
Nikon D90 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 US$ 1 299ebay.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. 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.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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.

Of the two cameras under consideration, the Canon 40D features an APS-C sensor and the Leica Q3 a full frame sensor. The sensor area in the Q3 is 160 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 40D and Leica Q3 sensor measures

With 60.3MP, the Q3 offers a higher resolution than the 40D (10.1MP), but the Q3 has smaller individual pixels (pixel pitch of 3.79μm versus 5.73μm for the 40D). Yet, the Q3 is a much more recent model (by 15 years and 9 months) than the 40D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. 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 40D 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 Q3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 40D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. 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.

40D versus Q3 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"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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 40D APS-C 10.1 3888 2592none22.111.370364
2.
 
Leica Q3 Full Frame 60.3 9528 63288K/30p25.414.7321696
3.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
4.
 
Canon 20D APS-C 8.2 3504 2336none21.911.072162
5.
 
Canon 30D APS-C 8.2 3504 2336none21.510.873659
6.
 
Canon 50D APS-C 15.1 4752 3168none21.811.469663
7.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
8.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
9.
 
Canon XS APS-C 10.1 3888 2592none22.010.971962
10.
 
Canon XSi APS-C 12.2 4272 2848none21.910.869261
11.
 
Canon XTi APS-C 10.1 3888 2592none22.111.066462
12.
 
Leica M Typ 240 Full Frame 23.7 5952 39761080/25p24.013.3186084
13.
 
Leica M10 Full Frame 23.8 5952 3992none24.413.2213386
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 D90 APS-C 12.2 4288 2848720/24p22.712.597773
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The Q3 indeed provides for movie recording, while the 40D does not. The highest resolution format that the Q3 can use is 8K/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the Q3 has an electronic viewfinder (5760k dots), while the 40D 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 viewfinder in the Q3 offers a wider field of view (100%) than the one in the 40D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the Q3 has a higher magnification (0.79x vs 0.59x), 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 40D 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 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
2.
 
Leica Q35760 n3.0 / 1840 tilting Y 1/2000s 15.0/s n Y
3.
 
Canon 10Doptical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
4.
 
Canon 20Doptical Y1.8 / 118 fixed n 1/8000s 5.0/s Y n
5.
 
Canon 30Doptical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
6.
 
Canon 50Doptical Y3.0 / 920 fixed n 1/8000s 6.3/s Y n
7.
 
Canon 60Doptical Y3.0 / 1040 swivel n 1/8000s 5.3/s Y n
8.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
9.
 
Canon XSoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
10.
 
Canon XSioptical n3.0 / 230 fixed n 1/4000s 3.5/s Y n
11.
 
Canon XTioptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
12.
 
Leica M Typ 240optical n3.0 / 920 fixed n 1/4000s 3.0/s n n
13.
 
Leica M10optical n3.0 / 1037 fixed n 1/4000s 5.0/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 D90optical Y3.0 / 920 fixed n 1/4000s 4.5/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The 40D has one, while the Q3 does not. While the built-in flash of the 40D is not very powerful, it can at times be useful as a fill-in light.

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 Leica Q3 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 40D writes its imaging data to Compact Flash cards, while the Q3 uses SDXC 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 40D 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 40DY- / ----2.0---
2.
 
Leica Q3Ystereo / mono--micro3.1Y-Y
3.
 
Canon 10DY- / ----1.1---
4.
 
Canon 20DY- / ----1.1---
5.
 
Canon 30DY- / ----2.0---
6.
 
Canon 50DY- / ---mini2.0---
7.
 
Canon 60DYmono / monoY-mini2.0---
8.
 
Canon T3Ystereo / mono--mini2.0---
9.
 
Canon XSY- / ----2.0---
10.
 
Canon XSiY- / ---mini2.0---
11.
 
Canon XTiY- / ----2.0---
12.
 
Leica M Typ 240Ystereo / mono---2.0---
13.
 
Leica M10Y- / -----Y--
14.
 
Leica M11Y- / ----3.2Y-Y
15.
 
Leica Q2Ystereo / mono----Y-Y
16.
 
Leica SL3Ystereo / monoYYfull3.1Y-Y
17.
 
Nikon D90Ymono / mono--mini2.0---

It is notable that the Q3 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 40D does not provide wifi capability.

Studio photographers will appreciate that the Canon 40D (unlike the Q3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The Q3 is a recent model that features in the current product line-up of Leica. In contrast, the 40D has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the 40D was succeeded by the Canon 50D. Further information on the features and operation of the 40D and Q3 can be found, respectively, in the Canon 40D Manual (free pdf) or the online Leica Q3 Manual.

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Review summary

So what conclusions can be drawn? Is the Canon 40D better than the Leica Q3 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Canon EOS 40D:

  • 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.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (750 versus 350) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More heavily discounted: Has been available for much longer (launched in August 2007).

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Advantages of the Leica Q3:

  • More detail: Has more megapixels (60.3 vs 10.1MP), which boosts linear resolution by 145%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Broader imaging potential: Can capture not only stills but also 8K/30p 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.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.79x vs 0.59x).
  • More detailed LCD: Has a higher resolution rear screen (1840k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (15 vs 6.5 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.
  • Ready to shoot: Comes with an integrated lens, while the 40D requires a separate lens.
  • More compact: Is smaller (130x80mm vs 146x108mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 40D).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 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.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
  • More modern: Reflects 15 years and 9 months of technical progress since the 40D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the Q3 is the clear winner of the contest (28 : 9 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.

40D 09:28 Q3

How about other alternatives? Do the specifications of the Canon 40D 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 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 40D or the Q3. 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

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 (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 40D..+ +..+ +4.5/54.5/5 Aug 2007 US$ 1 299ebay.com
2.
 
Leica Q35/5..4.5/5....4.5/5 May 2023 US$ 5 999 amazon.com
3.
 
Canon 10D......+ +.... Feb 2003 US$ 1 999ebay.com
4.
 
Canon 20D......+ +.... Aug 2004 US$ 1 499ebay.com
5.
 
Canon 30D..+ +..+ +o.. Feb 2006 US$ 1 399ebay.com
6.
 
Canon 50D..+ +..+ +4.5/54.5/5 Aug 2008 US$ 1 299ebay.com
7.
 
Canon 60D5/5+..79/1004/54.5/5 Aug 2010 US$ 1 399ebay.com
8.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 US$ 449ebay.com
9.
 
Canon XS..82/100..+ +3.5/54.5/5 Jun 2008 US$ 449ebay.com
10.
 
Canon XSi..+ +..+ +4/54.5/5 Jan 2008 US$ 799ebay.com
11.
 
Canon XTi..+ +..+ +o4/5 Aug 2006 US$ 799ebay.com
12.
 
Leica M Typ 2404/5......4/5.. Sep 2012 US$ 6 949ebay.com
13.
 
Leica M104.5/5......4/54.5/5 Jan 2017 US$ 6 599ebay.com
14.
 
Leica M114.5/5..4.5/5..4.5/54.5/5 Jan 2022 US$ 8 999 amazon.com
15.
 
Leica Q2....4.5/584/1004.5/54/5 Mar 2019 US$ 4 999 amazon.com
16.
 
Leica SL3....4.5/5....4.5/5 Mar 2024 US$ 6 999 amazon.com
17.
 
Nikon D90..+ +..+ +4/54.5/5 Aug 2008 US$ 1 299ebay.com
Note: (+ +) 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.

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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.

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    Specifications: Canon 40D 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 40D Leica Q3
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Canon EF mount lenses 28mm f/1.7
    Launch Date August 2007 May 2023
    Launch Price USD 1,299 USD 5,999
    Sensor Specs Canon 40D Leica Q3
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.3 x 14.9 mm 36.0 x 24.0 mm
    Sensor Area 332.27 mm2 864 mm2
    Sensor Diagonal 26.8 mm 43.3 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 10.1 Megapixels 60.3 Megapixels
    Image Resolution 3888 x 2592 pixels 9528 x 6328 pixels
    Pixel Pitch 5.73 μm 3.79 μm
    Pixel Density 3.03 MP/cm2 6.98 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 8K/30p Video
    ISO Setting 100 - 1,600 ISO 50 - 100,000 ISO
    ISO Boost 100 - 3,200 ISO no Enhancement
    DXO Sensor Quality (score) 64 ..
    DXO Color Depth (bits) 22.1 ..
    DXO Dynamic Range (EV) 11.3 ..
    DXO Low Light (ISO) 703 ..
    Screen Specs Canon 40D Leica Q3
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.59x 0.79x
    Viewfinder Resolution 5760k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 230k dots 1840k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon 40D 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 6.5 shutter flaps/s 15 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    Connectivity Specs Canon 40D Leica Q3
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 3.1
    HDMI Port no HDMI micro HDMI
    Wifi Support no Wifi Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Canon 40D Leica Q3
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon BP-511A Leica BP-SCL6
    Battery Life (CIPA)750 shots per charge350 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 146 x 108 x 74 mm
    (5.7 x 4.3 x 2.9 in)
    130 x 80 x 93 mm
    (5.1 x 3.1 x 3.7 in)
    Camera Weight 822 g (29.0 oz) 743 g (26.2 oz)
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