Canon 6D Mark II vs Leica SL2-S
The Canon EOS 6D Mark II and the Leica SL2-S are two enthusiast cameras that were officially introduced, respectively, in June 2017 and December 2020. The 6D Mark II is a DSLR, while the SL2-S is a mirrorless interchangeable lens camera. Both cameras are equipped with a full frame sensor. The Canon has a resolution of 26 megapixels, whereas the Leica provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 6D Mark II and the Leica SL2-S? 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.
An illustration of the physical size and weight of the Canon 6D Mark II and the Leica SL2-S is provided 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.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica SL2-S is somewhat smaller (2 percent) than the Canon 6D Mark II. However, the SL2-S is markedly heavier (22 percent) than the 6D Mark II. 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 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 power pack in the SL2-S can be charged via the USB port, which can be very convenient when travelling.
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, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon 6D Mark II||144 mm||111 mm||75 mm||765 g||1200||Y||Jun 2017||1,999|
|2.||Leica SL2-S||146 mm||107 mm||83 mm||931 g||510||Y||Dec 2020||4,895|
|3.||Canon R||139 mm||98 mm||84 mm||660 g||370||Y||Sep 2018||2,299|
|4.||Canon 5D Mark IV||151 mm||116 mm||76 mm||890 g||900||Y||Aug 2016||3,499|
|5.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199|
|6.||Canon 5D Mark III||152 mm||116 mm||76 mm||950 g||950||Y||Mar 2012||3,499|
|7.||Canon 6D||145 mm||111 mm||71 mm||770 g||1090||Y||Sep 2012||2,099|
|8.||Canon 5D Mark II||152 mm||114 mm||75 mm||850 g||850||Y||Sep 2008||3,499|
|9.||Leica SL2||146 mm||107 mm||42 mm||953 g||370||Y||Nov 2019||5,999|
|10.||Leica SL||147 mm||104 mm||39 mm||847 g||400||Y||Oct 2015||7,450|
|11.||Nikon D750||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299|
|12.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999|
|13.||Nikon D600||141 mm||113 mm||82 mm||850 g||900||Y||Sep 2012||2,099|
|14.||Panasonic S1||149 mm||110 mm||97 mm||1017 g||400||Y||Feb 2019||2,499|
|15.||Panasonic S1R||149 mm||110 mm||97 mm||1016 g||380||Y||Feb 2019||3,699|
|16.||Panasonic S1H||151 mm||114 mm||110 mm||1052 g||400||Y||May 2019||3,999|
|17.||Sony A7 III||127 mm||96 mm||74 mm||650 g||610||Y||Feb 2018||1,999|
|Notes: 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 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 6D Mark II was launched at a markedly lower price (by 59 percent) than the SL2-S, which puts it into a different market segment. 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.
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. 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 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. 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.
In terms of underlying technology, both cameras are build around CMOS sensors.
Despite having a slightly smaller sensor, the Canon 6D Mark II offers a higher resolution of 26 megapixels, compared with 24 MP of the Leica SL2-S. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 5.76μm versus 6.00μm for the SL2-S). Moreover, it should be noted that the SL2-S is much more recent (by 3 years and 5 months) than the 6D Mark II, 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 SL2-S has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The 6D Mark II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the 6D Mark II, the SL2-S has the capacity to capture high quality composite images (96MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Canon EOS 6D Mark II has a native sensitivity range from ISO 100 to ISO 40000, which can be extended to ISO 50-102400. The corresponding ISO settings for the Leica SL2-S are ISO 100 to ISO 50000, with the possibility to increase the ISO range to 50-100000.
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"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
| DXO |
|1.||Canon 6D Mark II||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85|
|2.||Leica SL2-S||Full Frame||24.0||6000||4000||4K/60p||..||..||..||..|
|3.||Canon R||Full Frame||30.1||6720||4480||4K/30p||24.5||13.5||2742||89|
|4.||Canon 5D Mark IV||Full Frame||30.1||6720||4480||4K/30p||24.8||13.6||2995||91|
|6.||Canon 5D Mark III||Full Frame||22.1||5760||3840||1080/30p||24.0||11.7||2293||81|
|7.||Canon 6D||Full Frame||20.0||5472||3648||1080/30p||23.8||12.1||2340||82|
|8.||Canon 5D Mark II||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79|
|9.||Leica SL2||Full Frame||46.7||8368||5584||4K/60p||..||..||..||..|
|10.||Leica SL||Full Frame||24.0||6000||4000||4K/30p||25.0||13.4||1821||88|
|11.||Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|12.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|13.||Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|14.||Panasonic S1||Full Frame||24.0||6000||4000||4K/60p||25.2||14.5||3333||95|
|15.||Panasonic S1R||Full Frame||46.7||8368||5584||4K/60p||26.4||14.1||3525||100|
|16.||Panasonic S1H||Full Frame||24.0||6000||4000||6K/30p||..||..||..||..|
|17.||Sony A7 III||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96|
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 SL2-S provides a better video resolution than the 6D Mark II. It can shoot movie footage at 4K/60p, while the Canon is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the SL2-S has an electronic viewfinder (5760k dots), while the 6D Mark II 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 SL2-S offers a wider field of view (100%) than the one in the 6D Mark II (98%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the SL2-S has a higher magnification (0.78x vs 0.72x), 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 6D Mark II and Leica SL2-S along with similar information for a selection of comparators.
|1.||Canon 6D Mark II||optical||Y||3.0||1040||swivel||Y||1/4000s||6.5||n||n|
|4.||Canon 5D Mark IV||optical||Y||3.2||1620||fixed||Y||1/8000s||7.0||n||n|
|6.||Canon 5D Mark III||optical||Y||3.2||1040||fixed||n||1/8000s||6.0||n||n|
|8.||Canon 5D Mark II||optical||Y||3.0||920||fixed||n||1/8000s||3.9||n||n|
|17.||Sony A7 III||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y|
One feature that differentiates the SL2-S and the 6D Mark II is in-body image stabilization (IBIS). The SL2-S reduces the risk of handshake-induced blur with all attached lenses, while the 6D Mark II offers no blur reduction with lenses that themselves do not provide optical image stabilization.The 6D Mark II has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the SL2-S does not have a selfie-screen.
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 SL2-S 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 6D Mark II and the Leica SL2-S 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.
Concerning the storage of imaging data, both the 6D Mark II and the SL2-S write their files to SDXC cards. The SL2-S features dual card slots, which can be very useful in case a memory card fails. In contrast, the 6D Mark II only has one slot. The SL2-S supports UHS-II cards (on both slots), while the 6D Mark II can use UHS-I 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 Canon EOS 6D Mark II and Leica SL2-S and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Canon 6D Mark II||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y|
|4.||Canon 5D Mark IV||Y||mono||mono||Y||Y||mini||3.0||Y||Y||-|
|6.||Canon 5D Mark III||Y||mono||mono||Y||Y||mini||2.0||-||-||-|
|8.||Canon 5D Mark II||Y||mono||mono||Y||-||mini||2.0||-||-||-|
|17.||Sony A7 III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y|
It is notable that the SL2-S has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The 6D Mark II lacks such a headphone port.
Travel and landscape photographers will find it useful that the 6D Mark II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the 6D Mark II and the SL2-S are recent models that are part of the current product line-up. The 6D Mark II replaced the earlier Canon 6D, while the SL2-S does not have a direct predecessor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Leica websites.
So what is the bottom line? Which of the two cameras – the Canon 6D Mark II or the Leica SL2-S – 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 Canon EOS 6D Mark II:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Less heavy: Is lighter (by 166g or 18 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (1200 versus 510) on a single battery charge.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (59 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2017).
Arguments in favor of the Leica SL2-S:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- 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 98%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.72x).
- 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 1040k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (20 vs 6.5 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- 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 legacy lens friendly: Can use many non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
- More modern: Reflects 3 years and 5 months of technical progress since the 6D Mark II launch.
If the count of relative strengths (bullet points above) is taken as a measure, the SL2-S is the clear winner of the contest (21 : 11 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.
How about other alternatives? Do the specifications of the Canon 6D Mark II and the Leica SL2-S place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 6D Mark II or the SL2-S. 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 (amateurphotographer [AP], cameralabs [CL], 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.
|1.||Canon 6D Mark II||4/5||+||80/100||4.5/5||4/5||Jun 2017||1,999|
|2.||Leica SL2-S||4/5||..||..||4.5/5||4.5/5||Dec 2020||4,895|
|3.||Canon R||4/5||o||79/100||4.5/5||4/5||Sep 2018||2,299|
|4.||Canon 5D Mark IV||4.5/5||+ +||87/100||4.5/5||4.5/5||Aug 2016||3,499|
|5.||Canon 80D||4/5||+ +||84/100||4.5/5||4.5/5||Feb 2016||1,199|
|6.||Canon 5D Mark III||..||+ +||82/100||4.5/5||4.5/5||Mar 2012||3,499|
|7.||Canon 6D||5/5||+ +||83/100||4.5/5||4.5/5||Sep 2012||2,099|
|8.||Canon 5D Mark II||4/5||91/100||79/100||4/5||..||Sep 2008||3,499|
|9.||Leica SL2||4/5||..||..||4.5/5||4/5||Nov 2019||5,999|
|10.||Leica SL||4/5||..||84/100||4.5/5||4/5||Oct 2015||7,450|
|11.||Nikon D750||5/5||+ +||90/100||4.5/5||4.5/5||Sep 2014||2,299|
|12.||Nikon D610||4/5||+ +||87/100||4.5/5||4.5/5||Oct 2013||1,999|
|13.||Nikon D600||4/5||+ +||87/100||5/5||4.5/5||Sep 2012||2,099|
|14.||Panasonic S1||4.5/5||+ +||88/100||4.5/5||4/5||Feb 2019||2,499|
|15.||Panasonic S1R||4.5/5||..||89/100||4.5/5||4.5/5||Feb 2019||3,699|
|16.||Panasonic S1H||..||..||90/100||..||..||May 2019||3,999|
|17.||Sony A7 III||..||+ +||89/100||5/5||5/5||Feb 2018||1,999|
|Notes: (+ +) 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. 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, please note that some of the review sites have changed their methodology and reporting over time.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Canon 6D Mark II vs Leica SL2-S
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||Canon 6D Mark II||Leica SL2-S|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Leica L mount lenses|
|Launch Date||June 2017||December 2020|
|Launch Price||USD 1,999||USD 4,895|
|Sensor Specs||Canon 6D Mark II||Leica SL2-S|
|Sensor Format||Full Frame Sensor||Full Frame Sensor|
|Sensor Size||35.9 x 24.0 mm||36.0 x 24.0 mm|
|Sensor Area||861.6 mm2||864 mm2|
|Sensor Diagonal||43.2 mm||43.3 mm|
|Sensor Resolution||26 Megapixels||24 Megapixels|
|Image Resolution||6240 x 4160 pixels||6000 x 4000 pixels|
|Pixel Pitch||5.76 μm||6.00 μm|
|Pixel Density||3.01 MP/cm2||2.78 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60p Video||4K/60p Video|
|ISO Setting||100 - 40,000 ISO||100 - 50,000 ISO|
|ISO Boost||50 - 102,400 ISO||50 - 100,000 ISO|
|Image Processor||DIGIC 7||Maestro III|
|DXO Sensor Quality (score)||85||..|
|DXO Color Depth (bits)||24.4||..|
|DXO Dynamic Range (EV)||11.9||..|
|DXO Low Light (ISO)||2862||..|
|Screen Specs||Canon 6D Mark II||Leica SL2-S|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||98%||100%|
|Viewfinder Resolution||5760k dots|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.2inch|
|LCD Resolution||1040k dots||2100k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Shooting Specs||Canon 6D Mark II||Leica SL2-S|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||6.5 shutter flaps/s||20 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/16000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|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||UHS-I||Dual UHS-II|
|Connectivity Specs||Canon 6D Mark II||Leica SL2-S|
|USB Connector||USB 2.0||USB 3.2|
|HDMI Port||mini HDMI||full HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||no NFC|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Geotagging||GPS built-in||no internal GPS|
|Body Specs||Canon 6D Mark II||Leica SL2-S|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||1200 shots per charge||510 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
144 x 111 x 75 mm
(5.7 x 4.4 x 3.0 in)
146 x 107 x 83 mm
(5.7 x 4.2 x 3.3 in)
|Camera Weight||765 g (27.0 oz)||931 g (32.8 oz)|
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