Leica M Typ 240 versus Leica SL

The Leica M (Typ 240) and the Leica SL (Typ 601) are two enthusiast cameras that were officially introduced, respectively, in September 2012 and October 2015. The M Typ 240 is a fixed lens compact, while the SL is a rangefinder-style mirrorless. Both cameras are equipped with a full frame sensor. The M Typ 240 has a resolution of 23.7 megapixel, whereas the SL provides 24 MP.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Leica M Typ 240 and the Leica SL. Three successive views from the front, the top, and the rear are shown. All size 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 M Typ 240 – represents the basis or 100 percent across all the size and weight measures).

Leica M Typ 240 vs Leica SL front
M Typ 240 versus SL top view
M Typ 240 and SL rear side
Body view (M Typ 240 on the left)

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica SL is notably larger (37 percent) than the Leica M Typ 240. Moreover, the SL is markedly heavier (25 percent) than the M Typ 240. 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 the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.

Camera Body Specifications
Camera Camera
Leica M Typ 240 (⇒ rgt) 139 mm 80 mm 42 mm 680 g .. YES 2012 6,950discont. check
Leica SL (⇒ lft) 147 mm 104 mm 39 mm 847 g 400 YES 2015 7,450 latest check
Canon 80D (⇒ lft | rgt) 139 mm 105 mm 79 mm 730 g 960 YES 2016 1,199 latest check
Canon 1D X Mark II (⇒ lft | rgt) 158 mm 168 mm 83 mm 1530 g 1210 YES 2016 5,999 latest check
Canon 6D (⇒ lft | rgt) 145 mm 111 mm 71 mm 770 g 1090 YES 2012 2,099discont. check
Leica M10 (⇒ lft | rgt) 139 mm 80 mm 39 mm 660 g 210 no 2017 6,595 latest check
Leica M Typ 262 (⇒ lft | rgt) 139 mm 80 mm 42 mm 680 g .. YES 2015 5,195discont. check
Leica Q Typ 116 (⇒ lft | rgt) 130 mm 80 mm 93 mm 640 g 300 no 2015 4,249 latest check
Leica M9 (⇒ lft | rgt) 139 mm 80 mm 37 mm 585 g .. no 2009 7,999discont. check
Nikon D5 (⇒ lft | rgt) 160 mm 159 mm 92 mm 1415 g 3780 YES 2016 6,499 latest check
Nikon D7100 (⇒ lft | rgt) 136 mm 107 mm 76 mm 765 g 950 YES 2013 1,199discont. check
Nikon D610 (⇒ lft | rgt) 141 mm 113 mm 82 mm 850 g 900 YES 2013 1,999 latest check
Sony RX10 (⇒ lft | rgt) 129 mm 88 mm 102 mm 813 g 420 YES 2013 1,299discont. check

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The M Typ 240 was somewhat cheaper (by 7 percent) than the SL at launch, but both cameras fall into the same price category. 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 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. 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 more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the SL is 1 percent bigger. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Leica M Typ 240 and Leica SL sensor measures
Sensor size

With 24MP, the SL offers a higher resolution than the M Typ 240 (23.7MP), but the SL has marginally smaller individual pixels (pixel pitch of 6.00μm versus 6.01μm for the M Typ 240). Yet, the SL is a much more recent model (by 3 years and 1 month) than the M Typ 240, 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 SL has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

M Typ 240 versus SL MP
Sensor resolution

For most 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 SL has a markedly higher DXO score than the M Typ 240 (overall score 4 points higher), which will translate into better image quality. The advantage is based on 1 bits higher color depth, 0.1 EV in additional dynamic range, 0 stops of reduced 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 Sensor
Leica M Typ 240 (⇒ rgt) Full Frame 23.7 5952 3976 1080/25p 24.0 13.3 1860 84
Leica SL (⇒ lft) Full Frame 24.0 6000 4000 4K/30p 25.0 13.4 1821 88
Canon 80D (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p 23.6 13.2 1135 79
Canon 1D X Mark II (⇒ lft | rgt) Full Frame 20.0 5472 3648 4K/60p 24.1 13.5 3207 88
Canon 6D (⇒ lft | rgt) Full Frame 20.0 5472 3648 1080/30p 23.8 12.1 2340 82
Leica M10 (⇒ lft | rgt) Full Frame 23.8 5952 3992 no 24.4 13.2 2133 86
Leica M Typ 262 (⇒ lft | rgt) Full Frame 23.7 5952 3976 no - - - -
Leica Q Typ 116 (⇒ lft | rgt) Full Frame 24.0 6000 4000 1080/60p 24.3 12.7 2221 85
Leica M9 (⇒ lft | rgt) Full Frame 18.1 5212 3472 no 22.5 11.7 884 69
Nikon D5 (⇒ lft | rgt) Full Frame 20.7 5588 3712 4K/30p 25.1 12.3 2343 88
Nikon D7100 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p 24.2 13.7 1256 83
Nikon D610 (⇒ lft | rgt) Full Frame 24.2 6016 4016 1080/30p 25.1 14.4 2925 94
Sony RX10 (⇒ lft | rgt) 1-inch 20.0 5472 3648 1080/60p 22.9 12.6 474 69

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the SL provides a better video resolution than the M Typ 240. It can shoot movie footage at 4K/30p, while the M Typ 240 is limited to 1080/25p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the SL has an electronic viewfinder (4400k dots), while the M Typ 240 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 table below summarizes some of the other core capabilities of the Leica M Typ 240 and Leica SL in connection with corresponding information for a sample of similar cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
Camera Viewfinder
(Type or
'000 dots)
('000 dots)
Leica M Typ 240 (⇒ rgt) optical no 3.0 920 fixed no 4000 3.0 no no
Leica SL (⇒ lft) 4400 YES 3.0 1040 fixed YES 8000 11.0 no no
Canon 80D (⇒ lft | rgt) optical YES 3.0 1040 swivel YES 8000 7.0 12 no
Canon 1D X Mark II (⇒ lft | rgt) optical YES 3.2 1620 fixed YES 8000 16.0 no no
Canon 6D (⇒ lft | rgt) optical YES 3.0 1040 fixed no 4000 4.5 no no
Leica M10 (⇒ lft | rgt) optical no 3.0 1037 fixed no 4000 5.0 no no
Leica M Typ 262 (⇒ lft | rgt) optical no 3.0 921 fixed no 4000 3.0 no no
Leica Q Typ 116 (⇒ lft | rgt) 3680 no 3.0 1040 fixed YES 2000 10.0 no no
Leica M9 (⇒ lft | rgt) optical no 2.5 230 fixed no 4000 2.0 no no
Nikon D5 (⇒ lft | rgt) optical YES 3.2 2359 fixed YES 8000 14.0 no no
Nikon D7100 (⇒ lft | rgt) optical YES 3.2 1229 fixed no 8000 6.0 12 no
Nikon D610 (⇒ lft | rgt) optical YES 3.2 921 fixed no 4000 6.0 12 no
Sony RX10 (⇒ lft | rgt) 1440 YES 3.0 1229 tilting no 3200 10.0 10.2 YES

The SL is a current model that online retailers, such as amazon, will have in stock. In contrast, the M Typ 240 has been discontinued (but it can be found pre-owned on ebay). As a replacement in the same line of cameras, the M Typ 240 was succeeded by the Leica M Typ 262.


So what conclusions can be drawn? Is the Leica M Typ 240 better than the Leica SL or vice versa? The listing below highlights the relative strengths of the two models.

Advantages of the Leica M (Typ 240):

  • 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.
  • More compact: Is smaller (139x80mm vs 147x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 167g or 20 percent) and hence easier to carry around.
  • More heavily discounted: Has been available for much longer (launched in September 2012).

Reasons to prefer the Leica SL (Typ 601):

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores markedly higher (4 points) in the DXO overall evaluation.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/25p).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Easier setting verification: Has a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 920k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (11 vs 3 flaps/sec) to capture the decisive moment.
  • More modern: Reflects 3 years and 1 month of technical progress since the M Typ 240 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the SL is the clear winner of the contest (10 : 5 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.

M Typ 240 05:10 SL

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the M Typ 240 or the SL handle or perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites. The full reviews are available, respectively, at,,,, and

Review scores
Camera camera
Leica M Typ 240 (⇒ rgt) - - 4/5 - - 2012 6,950discont. check
Leica SL (⇒ lft) - 84/100 4.5/5 4/5 4/5 2015 7,450 latest check
Canon 80D (⇒ lft | rgt) HiRec 84/100 Silver 4.5/5 4.5/5 4.5/5 2016 1,199 latest check
Canon 1D X Mark II (⇒ lft | rgt) - 89/100 Gold 4.5/5 5/5 4.5/5 2016 5,999 latest check
Canon 6D (⇒ lft | rgt) HiRec 83/100 Silver 4.5/5 4.5/5 4.5/5 2012 2,099discont. check
Leica M10 (⇒ lft | rgt) - - 4/5 - 4.5/5 2017 6,595 latest check
Leica M Typ 262 (⇒ lft | rgt) - - - - - 2015 5,195discont. check
Leica Q Typ 116 (⇒ lft | rgt) - 80/100 Silver 4.5/5 - 4.5/5 2015 4,249 latest check
Leica M9 (⇒ lft | rgt) - - 4.5/5 4.5/5 - 2009 7,999discont. check
Nikon D5 (⇒ lft | rgt) - 89/100 Gold 4.5/5 5/5 5/5 2016 6,499 latest check
Nikon D7100 (⇒ lft | rgt) HiRec 85/100 Gold 4.5/5 5/5 4.5/5 2013 1,199discont. check
Nikon D610 (⇒ lft | rgt) HiRec 87/100 Gold 4.5/5 4.5/5 4.5/5 2013 1,999 latest check
Sony RX10 (⇒ lft | rgt) Rec 80/100 Gold 4.5/5 4.5/5 4.5/5 2013 1,299discont. check

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Other comparisons

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 add information on that model to the database.