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Canon 40D versus Leica M10

The Canon EOS 40D and the Leica M10 (Typ 3656) are two enthusiast cameras that were officially introduced, respectively, in August 2007 and January 2017. The 40D is a DSLR, while the M10 is a rangefinder-style mirrorless camera. The cameras are based on an APS-C (40D) and a full frame (M10) sensor. The Canon has a resolution of 10.1 megapixel, whereas the Leica provides 23.8 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 40D vs Leica M10

The physical size and weight of the Canon 40D and the Leica M10 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the 40D – represents the basis or 100 percent across all the size and weight measures).

Compare Canon 40D vs Leica M10
Compare 40D versus M10 top
Compare 40D and M10 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica M10 is notably smaller (29 percent) than the Canon 40D. Moreover, the M10 is markedly lighter (20 percent) than the 40D. In this context, it is worth noting that neither the 40D nor the M10 are weather-sealed.

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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can find an overview of optics for the two cameras in the Canon EF Lens Catalog (40D) and the Leica M Lens Catalog (M10).

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 40D» 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299- i Canon 40D
Leica M10« 139 mm 80 mm 39 mm 660 g 210 n Jan 2017 6,595 i i Leica M10
Canon 70D« » 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199- i Canon 70D
Canon 1100D« » 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449- i Canon 1100D
Canon 60D« » 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399- i Canon 60D
Canon 50D« » 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 1,299- i Canon 50D
Canon 450D« » 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 799- i Canon 450D
Canon 30D« » 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 1,399- i Canon 30D
Canon 400D« » 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799- i Canon 400D
Canon 20D« » 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 1,499- i Canon 20D
Leica M10-P« » 139 mm 80 mm 39 mm 660 g 210 n Aug 2018 7,995 i i Leica M10-P
Leica M Typ 262« » 139 mm 80 mm 42 mm 680 g .. Y Nov 2015 5,195- i Leica M Typ 262
Leica Q Typ 116« » 130 mm 80 mm 93 mm 640 g 300 n Jun 2015 4,249 i i Leica Q Typ 116
Leica M Typ 240« » 139 mm 80 mm 42 mm 680 g .. Y Sep 2012 6,950- i Leica M Typ 240
Leica M8« » 139 mm 80 mm 37 mm 591 g .. n Sep 2006 5,499- i Leica M8
Nikon D90« » 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 1,299- i Nikon D90
Olympus E-30« » 142 mm 108 mm 75 mm 701 g 750 n Nov 2008 1,299- i Olympus E-30

Any camera purchase will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 40D was launched at a markedly lower price (by 80 percent) than the M10, which puts it into a different market segment. 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: Canon 40D vs Leica M10

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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.

Of the two cameras under consideration, the Canon 40D features an APS-C sensor and the Leica M10 a full frame sensor. The sensor area in the M10 is 158 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.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Canon 40D and Leica M10 sensor measures

With 23.8MP, the M10 offers a higher resolution than the 40D (10.1MP), but the M10 nevertheless has larger individual pixels (pixel pitch of 6.00μm versus 5.73μm for the 40D) due to its larger sensor. Moreover, the M10 is a much more recent model (by 9 years and 5 months) than the 40D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the M10 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

40D versus M10 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the M10 offers substantially better image quality than the 40D (overall score 22 points higher). The advantage is based on 2.3 bits higher color depth, 1.9 EV in additional dynamic range, and 1.6 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Canon 40D» APS-C 10.1 3888 2592-22.111.370364Canon 40D
Leica M10« Full Frame 23.8 5952 3992-24.413.2213386Leica M10
Canon 70D« » APS-C 20.0 5472 36481080/30p22.511.692668Canon 70D
Canon 1100D« » APS-C 12.2 4272 2848720/30p21.911.075562Canon 1100D
Canon 60D« » APS-C 17.9 5184 34561080/30p22.211.581366Canon 60D
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
Canon 450D« » APS-C 12.2 4272 2848-21.910.869261Canon 450D
Canon 30D« » APS-C 8.2 3504 2336-21.510.873659Canon 30D
Canon 400D« » APS-C 10.1 3888 2592-22.111.066462Canon 400D
Canon 20D« » APS-C 8.2 3504 2336-21.911.072162Canon 20D
Leica M10-P« » Full Frame 23.8 5952 3992-----Leica M10-P
Leica M Typ 262« » Full Frame 23.7 5952 3976-----Leica M Typ 262
Leica Q Typ 116« » Full Frame 24.0 6000 40001080/60p24.312.7222185Leica Q Typ 116
Leica M Typ 240« » Full Frame 23.7 5952 39761080/25p24.013.3186084Leica M Typ 240
Leica M8« » APS-H 10.4 3936 2630-21.111.366359Leica M8
Nikon D90« » APS-C 12.2 4288 2848720/24p22.712.597773Nikon D90
Olympus E-30« » Four Thirds 12.2 4032 3024-21.310.453055Olympus E-30
Both the 40D and the M10 offer Live View, so that they make it possible to use the rear screen for framing. Both cameras are still-image focused and cannot record videos.
 

Feature comparison: Canon 40D vs Leica M10

Beyond body and sensor, cameras can and do differ across a range of features. The 40D and the M10 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The following table reports on some other key feature differences and similarities of the Canon 40D, the Leica M10, and comparable cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon 40D»optical Y 3.0 230 fixed n 8000 6.5 Y n Canon 40D
Leica M10«optical n 3.0 1037 fixed n 4000 5.0 n n Leica M10
Canon 70D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 70D
Canon 1100D« »optical n 2.7 230 fixed n 4000 3.0 Y n Canon 1100D
Canon 60D« »optical Y 3.0 1040 swivel n 8000 5.3 Y n Canon 60D
Canon 50D« »optical Y 3.0 920 fixed n 8000 6.3 Y n Canon 50D
Canon 450D« »optical n 3.0 230 fixed n 4000 3.5 Y n Canon 450D
Canon 30D« »optical Y 2.5 230 fixed n 8000 5.0 Y n Canon 30D
Canon 400D« »optical n 2.5 230 fixed n 4000 3.0 Y n Canon 400D
Canon 20D« »optical Y 1.8 118 fixed n 8000 5.0 Y n Canon 20D
Leica M10-P« »optical n 3.0 1037 fixed Y 4000 5.0 n n Leica M10-P
Leica M Typ 262« »optical n 3.0 921 fixed n 4000 3.0 n n Leica M Typ 262
Leica Q Typ 116« »3680 n 3.0 1040 fixed Y 2000 10.0 n n Leica Q Typ 116
Leica M Typ 240« »optical n 3.0 920 fixed n 4000 3.0 n n Leica M Typ 240
Leica M8« »optical n 2.5 230 fixed n 8000 2.0 n n Leica M8
Nikon D90« »optical Y 3.0 920 fixed n 4000 4.5 Y n Nikon D90
Olympus E-30« »optical Y 2.7 230 swivel n 8000 5.0 Y Y Olympus E-30

One difference between the cameras concerns the presence of an on-board flash. The 40D has one, while the M10 does not. While the build-in flash of the 40D is not very powerful, it can at times be useful as a fill-in light.

The 40D writes its imaging data to Compact Flash cards, while the M10 uses SDXC cards.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Canon 40D»Y-----2.0---Canon 40D
Leica M10«Y------Y--Leica M10
Canon 70D« »YstereomonoY-mini2.0Y--Canon 70D
Canon 1100D« »Ystereomono--mini2.0---Canon 1100D
Canon 60D« »YmonomonoY-mini2.0---Canon 60D
Canon 50D« »Y----mini2.0---Canon 50D
Canon 450D« »Y----mini2.0---Canon 450D
Canon 30D« »Y-----2.0---Canon 30D
Canon 400D« »Y-----2.0---Canon 400D
Canon 20D« »Y-----1.1---Canon 20D
Leica M10-P« »Y------Y--Leica M10-P
Leica M Typ 262« »Y-----2.0---Leica M Typ 262
Leica Q Typ 116« »Ystereomono--micro2.0YY-Leica Q Typ 116
Leica M Typ 240« »Ystereomono---2.0Y--Leica M Typ 240
Leica M8« »Y-----2.0---Leica M8
Nikon D90« »Ymonomono--mini2.0---Nikon D90
Olympus E-30« »Y-----2.0---Olympus E-30

The M10 is a recent model that features in the current product line-up of Leica. In contrast, the 40D has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 40D was succeeded by the Canon 50D.

Review summary: Canon 40D vs Leica M10

So what is the bottom line? Is there a clear favorite between the Canon 40D and the Leica M10? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Canon EOS 40D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (6.5 vs 5 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (750 versus 210) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2007).

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Arguments in favor of the Leica M10 (Typ 3656):

  • More detail: Has more megapixels (23.8 vs 10.1MP), which boosts linear resolution by 53%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (22 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 (1.9 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.6 stops ISO advantage).
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 230k dots).
  • More compact: Is smaller (139x80mm vs 146x108mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 162g or 20 percent) and is thus easier to take along.
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
  • More modern: Reflects 9 years and 5 months of technical progress since the 40D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the M10 is the clear winner of the contest (12 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision.

40D 08:12 M10

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 handling experience and imaging performance when actually working with the 40D or the M10. 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. This is where reviews by experts come in. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 40D»HiRecHiRec4.5/5rev4.5/5 Aug 2007 1,299- i Canon 40D
Leica M10«--4/5-4.5/5 Jan 2017 6,595 i i Leica M10
Canon 70D« »HiRec83/1004.5/54.5/55/5 Jul 2013 1,199- i Canon 70D
Canon 1100D« »80/10069/1004/54/54.5/5 Feb 2011 449- i Canon 1100D
Canon 60D« »Rec79/1004/55/54.5/5 Aug 2010 1,399- i Canon 60D
Canon 50D« »HiRecHiRec4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
Canon 450D« »HiRecHiRec4/55/54.5/5 Jan 2008 799- i Canon 450D
Canon 30D« »HiRecHiRecrevrev- Feb 2006 1,399- i Canon 30D
Canon 400D« »HiRecHiRecrev4.5/54/5 Aug 2006 799- i Canon 400D
Canon 20D« »-HiRec-rev- Aug 2004 1,499- i Canon 20D
Leica M10-P« »----4/5 Aug 2018 7,995 i i Leica M10-P
Leica M Typ 262« »----- Nov 2015 5,195- i Leica M Typ 262
Leica Q Typ 116« »-80/1004.5/5-4.5/5 Jun 2015 4,249 i i Leica Q Typ 116
Leica M Typ 240« »--4/5-- Sep 2012 6,950- i Leica M Typ 240
Leica M8« »-HiRec--- Sep 2006 5,499- i Leica M8
Nikon D90« »HiRecHiRec4/55/54.5/5 Aug 2008 1,299- i Nikon D90
Olympus E-30« »-71/1004.5/5-4/5 Nov 2008 1,299- i Olympus E-30

The above review scores should be interpreted with care, 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

 

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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If you do not see the camera that you are looking for, kindly get in touch, and I will try to update the database with the necessary infos.

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