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Leica CL versus Sony A7S II

The Leica CL (Typ 7323) and the Sony Alpha 7S II are two digital cameras that were revealed to the public, respectively, in November 2017 and September 2015. Both the CL and the A7S II are mirrorless interchangeable lens cameras that are based on an APS-C (CL) and a full frame (A7S II) sensor. The Leica has a resolution of 24.1 megapixel, whereas the Sony provides 12 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: Leica CL vs Sony A7S II

The side-by-side display below illustrates the physical size and weight of the Leica CL and the Sony A7S II. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. 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 CL – represents 100 percent across all the size and weight measures).

Compare Leica CL vs Sony A7S II
Compare CL versus A7S II top
Compare CL and A7S II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S II is notably larger (19 percent) than the Leica CL. Moreover, the A7S II is substantially heavier (56 percent) than the CL. It is noteworthy in this context that the A7S II is splash and dust-proof, while the CL 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 the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the CL gets 220 shots out of its BP-DC12 battery, while the A7S II can take 370 images on a single charge of its NP-FW50 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.

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
Leica CL» 5.2 in 3.1 in 1.8 in 14.2 oz 220 n Nov 2017 2,795 i i Leica CL
Sony A7S II« 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i Sony A7S II
Fujifilm X-T100« » 4.8 in 3.3 in 1.9 in 15.8 oz 430 n May 2018 599 i i Fujifilm X-T100
Fujifilm X-T20« » 4.6 in 3.3 in 1.6 in 13.5 oz 350 n Jan 2017 899 i i Fujifilm X-T20
Fujifilm X-A3« » 4.6 in 2.6 in 1.6 in 12.0 oz 410 n Aug 2016 399- i Fujifilm X-A3
Leica C-LUX« » 4.4 in 2.6 in 1.8 in 12.0 oz 370 n Jun 2018 1,049 i i Leica C-LUX
Leica TL2« » 5.3 in 2.7 in 1.3 in 14.1 oz 250 n Jul 2017 1,950 i i Leica TL2
Leica TL« » 5.3 in 2.7 in 1.3 in 13.5 oz 400 n Nov 2016 1,695- i Leica TL
Leica T« » 5.3 in 2.7 in 1.3 in 13.5 oz 400 n Apr 2014 1,850- i Leica T
Nikon D3500« » 4.9 in 3.8 in 2.8 in 12.9 oz 1550 n Aug 2018 429 i i Nikon D3500
Nikon D5600« » 4.9 in 3.8 in 2.8 in 16.4 oz 970 n Nov 2016 699 i i Nikon D5600
Nikon D3400« » 4.9 in 3.9 in 3.0 in 15.7 oz 1200 n Aug 2016 499- i Nikon D3400
Sony A7R III« » 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199 i i Sony A7R III
Sony A9« » 5.0 in 3.8 in 2.5 in 23.7 oz 650 Y Apr 2017 4,499 i i Sony A9
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i Sony A7R II
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i Sony A7 II
Sony A7S« » 5.0 in 3.7 in 1.9 in 17.2 oz 380 Y Apr 2014 2,499- i Sony A7S

The camera’s price is obviously a critical decision-making factor. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The CL was somewhat cheaper (by 7 percent) than the A7S II 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: Leica CL vs Sony A7S II

The size of the imaging sensor is a crucial determinant 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Leica CL features an APS-C sensor and the Sony A7S II a full frame sensor. The sensor area in the A7S II is 128 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Leica CL and Sony A7S II sensor measures

Despite having a smaller sensor, the Leica CL offers a higher resolution of 24.1 megapixel, compared with 12 MP of the Sony A7S II. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.92μm versus 8.40μm for the A7S II). However, it should be noted that the CL is much more recent (by 2 years and 2 months) than the A7S II, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the CL has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

CL versus A7S II MP

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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Leica CL» APS-C 24.1 6014 40144K/30p----Leica CL
Sony A7S II« Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
Fujifilm X-T100« » APS-C 24.0 6000 40004K/15p----Fujifilm X-T100
Fujifilm X-T20« » APS-C 24.0 6000 40004K/30p----Fujifilm X-T20
Fujifilm X-A3« » APS-C 24.0 6000 40001080/60p----Fujifilm X-A3
Leica C-LUX« » 1-inch 20.0 5472 36484K/30p----Leica C-LUX
Leica TL2« » APS-C 24.1 6014 40144K/30p----Leica TL2
Leica TL« » APS-C 16.1 4928 32641080/30p----Leica TL
Leica T« » APS-C 16.2 4944 32781080/30p23.012.7108275Leica T
Nikon D3500« » APS-C 24.0 6000 40001080/60p----Nikon D3500
Nikon D5600« » APS-C 24.0 6000 40001080/60p24.114.0130684Nikon D5600
Nikon D3400« » APS-C 24.0 6000 40001080/60p24.813.9119286Nikon D3400
Sony A7R III« » Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
Sony A9« » Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
Sony A7 II« » Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
Sony A7S« » Full Frame 12.0 4240 28321080/60p23.913.2370287Sony A7S

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).

 

Feature comparison: Leica CL vs Sony A7S II

Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7S II offers a slightly higher resolution than the one in the CL (2400k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Leica CL, the Sony A7S II, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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
Leica CL»2360 Y 3.0 1040 fixed Y 8000 10.0 n n Leica CL
Sony A7S II«2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7S II
Fujifilm X-T100« »2360 n 3.0 1040 full-flex Y 4000 6.0 Y n Fujifilm X-T100
Fujifilm X-T20« »2360 n 3.0 1040 tilting Y 4000 8.0 Y n Fujifilm X-T20
Fujifilm X-A3« »- n 3.0 1040 tilting Y 4000 6.0 Y n Fujifilm X-A3
Leica C-LUX« »2330 n 3.0 1240 fixed Y 2000 10.0 Y Y Leica C-LUX
Leica TL2« »- n 3.7 1230 fixed Y 4000 7.0 n n Leica TL2
Leica TL« »- n 3.7 1230 fixed Y 4000 5.0 Y n Leica TL
Leica T« »- n 3.7 1300 fixed Y 4000 5.0 Y n Leica T
Nikon D3500« »optical n 3.0 921 fixed n 4000 5.0 Y n Nikon D3500
Nikon D5600« »optical n 3.2 1037 swivel Y 4000 5.0 Y n Nikon D5600
Nikon D3400« »optical n 3.0 921 fixed n 4000 5.0 Y n Nikon D3400
Sony A7R III« »3686 n 3.0 1440 tilting Y 8000 10.0 n Y Sony A7R III
Sony A9« »3686 n 3.0 1440 tilting Y 8000 20.0 n Y Sony A9
Sony A7R II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7R II
Sony A7 II« »2400 n 3.0 1230 tilting n 8000 5.0 n Y Sony A7 II
Sony A7S« »2400 n 3.0 921 tilting n 8000 5.0 n n Sony A7S

One feature that is present on the CL, but is missing on the A7S II is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the CL features an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

The CL writes its imaging data to SDXC cards, while the A7S II uses SDXC or Memory Stick PRO Duo 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
Leica CL»Ystereomono----Y--Leica CL
Sony A7S II«YstereomonoYYmicro2.0YY-Sony A7S II
Fujifilm X-T100« »YstereomonoY-micro2.0Y-YFujifilm X-T100
Fujifilm X-T20« »YstereomonoY-micro2.0Y--Fujifilm X-T20
Fujifilm X-A3« »Ystereomono--micro2.0Y--Fujifilm X-A3
Leica C-LUX« »-stereomono--micro2.0Y--Leica C-LUX
Leica TL2« »Ystereomono--micro3.0Y--Leica TL2
Leica TL« »Ystereomono--micro2.0Y--Leica TL
Leica T« »Ystereomono---2.0Y--Leica T
Nikon D3500« »Ymonomono--mini2.0Y-YNikon D3500
Nikon D5600« »YstereomonoY-mini2.0YYYNikon D5600
Nikon D3400« »Ymonomono--mini2.0Y-YNikon D3400
Sony A7R III« »YstereomonoYYmicro3.1YYYSony A7R III
Sony A9« »YstereomonoYYmicro2.0YYYSony A9
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
Sony A7 II« »YstereomonoYYmicro2.0YY-Sony A7 II
Sony A7S« »YstereomonoYYmicro2.0YY-Sony A7S

Both the CL and the A7S II are recent models that feature in their makers' current product line-up. The A7S II replaced the earlier Sony A7S, while the CL does not have a direct predecessor.

Review summary: Leica CL vs Sony A7S II

So how do things add up? Is there a clear favorite between the Leica CL and the Sony A7S II? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Leica CL (Typ 7323):

  • More detail: Offers more megapixels (24.1 vs 12MP) with a 42% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (10 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (131x78mm vs 127x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 224g or 36 percent) and hence easier to carry around.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
  • More modern: Reflects 2 years and 2 months of technical progress since the A7S II launch.

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Reasons to prefer the Sony Alpha 7S II:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: Larger pixels generate images with better, more accurate colors.
  • More dynamic range: Capable of capturing a wider spectrum of light and dark details.
  • Better low-light sensitivity: Can be used in poorly lit environments and still produce good images.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Longer lasting: Gets more shots (370 versus 220) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been around for much longer (launched in September 2015).

If the count of relative strengths (bullet points above) is taken as a measure, the A7S II is the clear winner of the contest (14 : 10 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.

CL 10:14 A7S II

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the CL and the A7S II in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable. 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). The detailed reviews can be accessed 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
Leica CL»----4/5 Nov 2017 2,795 i i Leica CL
Sony A7S II«Rec-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
Fujifilm X-T100« »Rec79/1004/5-4.5/5 May 2018 599 i i Fujifilm X-T100
Fujifilm X-T20« »HiRec82/1005/5-4.5/5 Jan 2017 899 i i Fujifilm X-T20
Fujifilm X-A3« »-74/1004.5/5-4/5 Aug 2016 399- i Fujifilm X-A3
Leica C-LUX« »--4.5/5-4/5 Jun 2018 1,049 i i Leica C-LUX
Leica TL2« »--4/5-4/5 Jul 2017 1,950 i i Leica TL2
Leica TL« »----4/5 Nov 2016 1,695- i Leica TL
Leica T« »--4/5-4/5 Apr 2014 1,850- i Leica T
Nikon D3500« »--4/5-4.5/5 Aug 2018 429 i i Nikon D3500
Nikon D5600« »-79/1004.5/54.5/54/5 Nov 2016 699 i i Nikon D5600
Nikon D3400« »Rec76/1004/54.5/54.5/5 Aug 2016 499- i Nikon D3400
Sony A7R III« »HiRec90/1004.5/55/55/5 Oct 2017 3,199 i i Sony A7R III
Sony A9« »HiRec89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
Sony A7R II« »HiRec90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
Sony A7 II« »Rec82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
Sony A7S« »-86/1004.5/54.5/55/5 Apr 2014 2,499- i Sony A7S

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, please contact me, and I will try to locate and add the respective data to the application.

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