Leica M9 vs SL
The Leica M9 and the Leica SL (Typ 601) are two enthusiast cameras that were officially introduced, respectively, in September 2009 and October 2015. The M9 is a fixed lens compact, while the SL is a rangefinder-style mirrorless. Both cameras are equipped with a full frame sensor. The M9 has a resolution of 18.1 megapixels, whereas the SL provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Leica M9||Leica SL|
|Rangefinder camera||Mirrorless system camera|
|Leica M mount lenses||Leica L mount lenses|
|18.1 MP, Full Frame Sensor||24 MP, Full Frame Sensor|
|no Video||4K/30p Video|
|ISO 80-2500||ISO 50-50000|
|Optical viewfinder||Electronic viewfinder (4400k dots)|
|2.5" LCD, 230k dots||3.0" LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Fixed touchscreen|
|2 shutter flaps per second||11 shutter flaps per second|
|Not weather sealed||Weathersealed body|
|139 x 80 x 37 mm, 585 g||147 x 104 x 39 mm, 847 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Leica M9 and the Leica SL (Typ 601)? 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.
The physical size and weight of the Leica M9 and the Leica SL 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 size dimensions are rounded to the nearest millimeter.
The M9 can be obtained in two different colors (black, silver), while the SL is only available in black.
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 M9. Moreover, the SL is substantially heavier (45 percent) than the M9. It is noteworthy in this context that the SL is splash and dust-proof, while the M9 does not feature any corresponding weather-sealing.
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.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Leica M9»||5.5 in||3.1 in||1.5 in||20.6 oz||..||n||Sep 2009||7,999||Leica M9|
|Leica SL«||5.8 in||4.1 in||1.5 in||29.9 oz||400||Y||Oct 2015||7,450||Leica SL|
|Canon 1D X Mark II« »||6.2 in||6.6 in||3.3 in||54.0 oz||1210||Y||Feb 2016||5,999||Canon 1D X Mark II|
|Canon 80D« »||5.5 in||4.1 in||3.1 in||25.8 oz||960||Y||Feb 2016||1,199||Canon 80D|
|Canon 5DS« »||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699||Canon 5DS|
|Canon T5i« »||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649||Canon T5i|
|Canon T2i« »||5.1 in||3.9 in||2.4 in||18.7 oz||440||n||Feb 2010||699||Canon T2i|
|Canon T1i« »||5.1 in||3.9 in||2.4 in||18.3 oz||400||n||Mar 2009||799||Canon T1i|
|Leica SL2« »||5.7 in||4.2 in||1.7 in||33.6 oz||370||Y||Nov 2019||5,999||Leica SL2|
|Leica M10-P« »||5.5 in||3.1 in||1.5 in||23.3 oz||210||Y||Aug 2018||7,995||Leica M10-P|
|Leica M10« »||5.5 in||3.1 in||1.5 in||23.3 oz||210||Y||Jan 2017||6,595||Leica M10|
|Leica T« »||5.3 in||2.7 in||1.3 in||13.5 oz||400||n||Apr 2014||1,850||Leica T|
|Leica X Typ 113« »||5.2 in||2.9 in||3.1 in||17.1 oz||350||n||Sep 2014||2,295||Leica X Typ 113|
|Leica X Vario« »||5.2 in||2.9 in||3.7 in||24.0 oz||450||n||Jun 2013||2,850||Leica X Vario|
|Leica M Typ 240« »||5.5 in||3.1 in||1.7 in||24.0 oz||..||Y||Sep 2012||6,950||Leica M Typ 240|
|Leica M8« »||5.5 in||3.1 in||1.5 in||20.8 oz||..||n||Sep 2006||5,499||Leica M8|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The SL was somewhat cheaper (by 7 percent) than the M9 at launch, but both cameras fall into the same price category. 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.
The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 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.
While the two cameras under review share the same sensor size, the SL offers a higher resolution of 24 megapixels, compared with 18.1 MP of the M9. This megapixels advantage translates into a 15 percent gain in linear resolution. On the other hand, these sensor specs imply that the SL has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 6.00μm versus 6.91μm for the M9). However, it should be noted that the SL is much more recent (by 6 years and 1 month) than the M9, 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
The resolution advantage of the Leica SL implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SL for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Leica M9 are 26.1 x 17.4 inch or 66.2 x 44.1 cm for good quality, 20.8 x 13.9 inch or 53 x 35.3 cm for very good quality, and 17.4 x 11.6 inch or 44.1 x 29.4 cm for excellent quality prints.
The Leica M9 has a native sensitivity range from ISO 80 to ISO 2500. The corresponding ISO settings for the Leica SL (Typ 601) are ISO 50 to ISO 50000 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the SL offers substantially better image quality than the M9 (overall score 19 points higher). The advantage is based on 2.5 bits higher color depth, 1.7 EV in additional dynamic range, and 1 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.
|Leica M9||Full Frame||18.1||5212||3472||none||22.5||11.7||884||69||Leica M9|
|Leica SL||Full Frame||24.0||6000||4000||4K/30p||25.0||13.4||1821||88||Leica SL|
|Canon 1D X Mark II||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88||Canon 1D X Mark II|
|Canon 80D||APS-C||24.0||6000||4000||1080/60p||23.6||13.2||1135||79||Canon 80D|
|Canon 5DS||Full Frame||50.3||8688||5792||1080/30p||24.7||12.4||2381||87||Canon 5DS|
|Canon T5i||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon T5i|
|Canon T2i||APS-C||17.9||5184||3456||1080/30p||22.1||11.5||784||66||Canon T2i|
|Canon T1i||APS-C||15.1||4752||3168||1080/20p||21.7||11.5||663||63||Canon T1i|
|Leica SL2||Full Frame||46.7||8368||5584||4K/60p||..||..||..||..||Leica SL2|
|Leica M10-P||Full Frame||23.8||5952||3992||none||..||..||..||..||Leica M10-P|
|Leica M10||Full Frame||23.8||5952||3992||none||24.4||13.2||2133||86||Leica M10|
|Leica T||APS-C||16.2||4944||3278||1080/30p||23.0||12.7||1082||75||Leica T|
|Leica X Typ 113||APS-C||16.1||4928||3264||1080/30p||..||..||..||..||Leica X Typ 113|
|Leica X Vario||APS-C||16.1||4928||3272||1080/30p||23.4||12.7||1320||78||Leica X Vario|
|Leica M Typ 240||Full Frame||23.7||5952||3976||1080/25p||24.0||13.3||1860||84||Leica M Typ 240|
|Leica M8||APS-H||10.4||3936||2630||none||21.1||11.3||663||59||Leica M8|
Many modern cameras cannot only take still pictures, but also record videos. The SL indeed provides for movie recording, while the M9 does not. The highest resolution format that the SL can use is 4K/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the SL has an electronic viewfinder (4400k dots), while the M9 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 SL has a higher magnification than the one of the M9 (0.80x vs 0.68x), 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 Leica M9 and Leica SL along with similar information for a selection of comparators.
|Leica M9||optical||n||2.5||230||fixed||n||1/4000s||2.0||n||n||Leica M9|
|Leica SL||4400||Y||3.0||1040||fixed||Y||1/8000s||11.0||n||n||Leica SL|
|Canon 1D X Mark II||optical||Y||3.2||1620||fixed||Y||1/8000s||16.0||n||n||Canon 1D X Mark II|
|Canon 80D||optical||Y||3.0||1040||swivel||Y||1/8000s||7.0||Y||n||Canon 80D|
|Canon 5DS||optical||Y||3.2||1040||fixed||n||1/8000s||5.0||n||n||Canon 5DS|
|Canon T5i||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon T5i|
|Canon T2i||optical||n||3.0||1040||fixed||n||1/4000s||3.7||Y||n||Canon T2i|
|Canon T1i||optical||n||3.0||920||fixed||n||1/4000s||3.4||Y||n||Canon T1i|
|Leica SL2||5760||Y||3.2||2100||fixed||Y||1/8000s||10.0||n||Y||Leica SL2|
|Leica M10-P||optical||n||3.0||1037||fixed||Y||1/4000s||5.0||n||n||Leica M10-P|
|Leica M10||optical||n||3.0||1037||fixed||n||1/4000s||5.0||n||n||Leica M10|
|Leica T||optional||n||3.7||1300||fixed||Y||1/4000s||5.0||Y||n||Leica T|
|Leica X Typ 113||optional||n||3.0||920||fixed||n||1/2000s||5.0||Y||n||Leica X Typ 113|
|Leica X Vario||optional||n||3.0||920||fixed||n||1/2000s||5.0||Y||n||Leica X Vario|
|Leica M Typ 240||optical||n||3.0||920||fixed||n||1/4000s||3.0||n||n||Leica M Typ 240|
|Leica M8||optical||n||2.5||230||fixed||n||1/8000s||2.0||n||n||Leica M8|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The SL has a touchscreen, while the M9 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
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 SL 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 SL 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.
Concerning the storage of imaging data, both the M9 and the SL write their files to SDXC cards. The SL features dual card slots, which can be very useful in case a memory card fails. In contrast, the M9 only has one slot. The SL supports UHS-II cards on its first slot and UHS-I on its second one, while the M9 cannot take advantage of Ultra High Speed SD cards.
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 Leica M9 and Leica SL (Typ 601) and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Leica M9||Y||none||none||-||-||none||2.0||-||-||-||Leica M9|
|Leica SL||Y||stereo||mono||Y||Y||full||3.0||Y||-||-||Leica SL|
|Canon 1D X Mark II||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Canon 1D X Mark II|
|Canon 80D||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-||Canon 80D|
|Canon 5DS||Y||mono||mono||Y||-||mini||3.0||-||-||-||Canon 5DS|
|Canon T5i||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon T5i|
|Canon T2i||Y||stereo||none||Y||-||mini||2.0||-||-||-||Canon T2i|
|Canon T1i||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon T1i|
|Leica SL2||Y||stereo||mono||Y||Y||full||3.1||Y||-||Y||Leica SL2|
|Leica M10-P||Y||none||none||-||-||none||none||Y||-||-||Leica M10-P|
|Leica M10||Y||none||none||-||-||none||none||Y||-||-||Leica M10|
|Leica T||Y||stereo||mono||-||-||none||2.0||Y||-||-||Leica T|
|Leica X Typ 113||Y||stereo||mono||-||-||mini||2.0||-||-||-||Leica X Typ 113|
|Leica X Vario||Y||stereo||mono||-||-||mini||2.0||-||-||-||Leica X Vario|
|Leica M Typ 240||Y||stereo||mono||-||-||none||2.0||-||-||-||Leica M Typ 240|
|Leica M8||Y||none||none||-||-||none||2.0||-||-||-||Leica M8|
It is notable that the SL offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the M9 does not offer wifi capability.
Studio photographers will appreciate that the Leica SL (unlike the M9) 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 SL has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the M9 and the SL have been discontinued, but can regularly be found used on eBay. The M9 was replaced by the Leica M Typ 240, while the SL was followed by the Leica SL2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Leica website.
So what is the bottom line? Which of the two cameras – the Leica M9 or the Leica SL – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Advantages of the Leica M9:
- 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 262g or 31 percent) and hence easier to carry around.
- More heavily discounted: Has been available for much longer (launched in September 2009).
Arguments in favor of the Leica SL (Typ 601):
- More detail: Has more megapixels (24 vs 18.1MP), which boosts linear resolution by 15%.
- Better image quality: Scores substantially higher (19 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.5 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1.7 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 4K/30p video.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.80x vs 0.68x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (11 vs 2 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.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- 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.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II and UHS-I) SDXC cards.
- More modern: Reflects 6 years and 1 month of technical progress since the M9 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the SL is the clear winner of the contest (24 : 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.
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 M9 or the SL. 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
The review scores listed above should be treated 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.
Other camera comparisons
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Specifications: Leica M9 vs Leica SL
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 Model||Leica M9||Leica SL|
|Camera Type||Rangefinder camera||Mirrorless system camera|
|Camera Lens||Leica M mount lenses||Leica L mount lenses|
|Launch Date||September 2009||October 2015|
|Launch Price||USD 7999||USD 7450|
|Sensor Specs||Leica M9||Leica SL|
|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|
|Sensor Resolution||18.1 Megapixels||24 Megapixels|
|Image Resolution||5212 x 3472 pixels||6000 x 4000 pixels|
|Pixel Pitch||6.91 μm||6.00 μm|
|Pixel Density||2.09 MP/cm2||2.78 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||80-2500 ISO||50-50000 ISO|
|DXO Sensor Quality (score)||69||88|
|DXO Color Depth (bits)||22.5||25.0|
|DXO Dynamic Range (EV)||11.7||13.4|
|DXO Low Light (ISO)||884||1821|
|Screen Specs||Leica M9||Leica SL|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||4400k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||2.5 inch||3.0 inch|
|LCD Resolution||230k dots||1040k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Leica M9||Leica SL|
|Focus System||Manual Focus||Contrast-detect AF|
|Manual Focusing Aid||No Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/8000/s|
|Continuous Shooting||2 shutter flaps/s||11 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/16000s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||no||Single UHS-II|
|Connectivity Specs||Leica M9||Leica SL|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 3.0|
|HDMI Port||no HDMI||full HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Geotagging||no internal GPS||GPS built-in|
|Body Specs||Leica M9||Leica SL|
|Environmental Sealing||Not weather sealed||Weathersealed body|
139 x 80 x 37 mm
(5.5 x 3.1 x 1.5 in)
147 x 104 x 39 mm
(5.8 x 4.1 x 1.5 in)
|Camera Weight||585 g (20.6 oz)||847 g (29.9 oz)|
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