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Leica S1 vs Sony A7S III

The Leica S1 Pro and the Sony Alpha 7S III are two professional cameras that were officially introduced, respectively, in August 1996 and July 2020. Both the S1 and the A7S III are mirrorless interchangeable lens cameras that are based on a medium format (S1) and a full frame (A7S III) sensor. The Leica has a resolution of 26.4 megapixels, whereas the Sony provides 12 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Leica S1 versus Sony A7S III
Leica S1 Sony A7S III
Mirrorless system camera Mirrorless system camera
Leica R mount lenses Sony E mount lenses
26.4 MP, Medium Format Sensor 12 MP, Full Frame Sensor
no Video 4K/120p Video
ISO 50-1,600 ISO 80-102,400 (40 - 409,600)
Optical viewfinder Electronic viewfinder (9440k dots)
no LCD 3.0 LCD, 1440k dots
no rear screen Swivel touchscreen
0.01 shutter flaps per second 10 shutter flaps per second
no shake reductionIn-body stabilization
not weather sealedWeathersealed body
339 x 214 x 119 mm, 2500 g 127 x 97 x 81 mm, 699 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica S1 Pro and the Sony Alpha 7S III? 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.

Body comparison

The physical size and weight of the Leica S1 and the Sony A7S III are illustrated in the side-by-side display below. 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 size dimensions are rounded to the nearest millimeter.

Size Leica S1 vs Sony A7S III
Compare S1 versus A7S III top
Comparison S1 or A7S III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S III is considerably smaller (83 percent) than the Leica S1. Moreover, the A7S III is substantially lighter (72 percent) than the S1. It is noteworthy in this context that the A7S III is splash and dust-proof, while the S1 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Leica R Lens Catalog (S1) and the Sony FE Lens Catalog (A7S III). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

The power pack in the A7S III can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Leica S1 339 mm 214 mm 119 mm 2500 g .. n Aug 1996 21,490i
2.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 i
3.
 
Canon RP 133 mm 85 mm 70 mm 485 g 250 n Feb 2019 1,299 i
4.
 
Canon 250D 122 mm 93 mm 70 mm 449 g 1070 n Apr 2019 599 i
5.
 
Fujifilm X-T30 118 mm 83 mm 47 mm 383 g 380 n Feb 2019 899 i
6.
 
Leica M-E Typ 240 139 mm 80 mm 42 mm 680 g .. Y Jun 2019 3,999 i
7.
 
Leica CL 131 mm 78 mm 45 mm 403 g 220 n Nov 2017 2,795 i
8.
 
Leica TL2 134 mm 69 mm 33 mm 399 g 250 n Jul 2017 1,950 i
9.
 
Leica Q Typ 116 130 mm 80 mm 93 mm 640 g 300 n Jun 2015 4,249i
10.
 
Leica S2 160 mm 120 mm 80 mm 1410 g .. Y Sep 2008 22,995i
11.
 
Sony A6400 120 mm 67 mm 50 mm 403 g 410 Y Jan 2019 899 i
12.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499 i
13.
 
Sony A6100 120 mm 67 mm 59 mm 396 g 420 n Aug 2019 749 i
14.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
15.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499i
16.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199i
17.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. 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 A7S III was launched at a markedly lower price (by 84 percent) than the S1, 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.

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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. 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. 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 Leica S1 features a medium format sensor and the Sony A7S III a full frame sensor. The sensor area in the A7S III is 35 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.85 and 1.0. The sensor in the S1 has a native 1:1 aspect ratio, while the one in the A7S III offers a 3:2 aspect.

Leica S1 and Sony A7S III sensor measures

With 26.4MP, the S1 offers a higher resolution than the A7S III (12MP), but the S1 has smaller individual pixels (pixel pitch of 7.01μm versus 8.40μm for the A7S III). Moreover, the A7S III is a much more recent model (by 23 years and 11 months) than the S1, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the S1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Leica S1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S1 for good quality output (200 dots per inch) amounts to 25.7 x 25.7 inches or 65.3 x 65.3 cm, for very good quality (250 dpi) 20.6 x 20.6 inches or 52.2 x 52.2 cm, and for excellent quality (300 dpi) 17.1 x 17.1 inches or 43.5 x 43.5 cm. The corresponding values for the Sony A7S III are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

The Leica S1 Pro has a native sensitivity range from ISO 50 to ISO 1600. The corresponding ISO settings for the Sony Alpha 7S III are ISO 80 to ISO 102400, with the possibility to increase the ISO range to 40-409600.

S1 versus A7S III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Leica S1 Medium Format 26.4 5140 5140none........
2.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.9252086
3.
 
Canon RP Full Frame 26.2 6240 41604K/30p........
4.
 
Canon 250D APS-C 24.0 6000 40004K/25p........
5.
 
Fujifilm X-T30 APS-C 26.0 6240 41604K/30p........
6.
 
Leica M-E Typ 240 Full Frame 23.7 5952 39761080/25p........
7.
 
Leica CL APS-C 24.1 6014 40144K/30p........
8.
 
Leica TL2 APS-C 24.1 6014 40144K/30p........
9.
 
Leica Q Typ 116 Full Frame 24.0 6000 40001080/60p24.312.7222185
10.
 
Leica S2 Medium Format 37.5 7500 5000none........
11.
 
Sony A6400 APS-C 24.0 6000 40004K/30p2413.6143183
12.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.8334499
13.
 
Sony A6100 APS-C 24.0 6000 40004K/30p........
14.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
15.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
16.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
17.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385

Many modern cameras are not only capable of taking still images, but can also record movies. The A7S III indeed provides for movie recording, while the S1 does not. The highest resolution format that the A7S III can use is 4K/120p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7S III has an electronic viewfinder (9440k dots), while the S1 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 adjacent table lists some of the other core features of the Leica S1 and Sony A7S III along with similar information for a selection of comparators.

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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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Leica S1optical n none none none n .. 0.01 n n
2.
 
Sony A7S III9440 n 3.0 1440 swivel Y 1/8000s 10.0 n Y
3.
 
Canon RP2360 n 3.0 1040 swivel Y 1/4000s 5.0 n n
4.
 
Canon 250Doptical n 3.0 1040 swivel Y 1/4000s 5.0 Y n
5.
 
Fujifilm X-T302360 n 3.0 1040 tilting Y 1/4000s 8.0 Y n
6.
 
Leica M-E Typ 240optical n 3.0 920 fixed n 1/4000s 3.0 n n
7.
 
Leica CL2360 Y 3.0 1040 fixed Y 1/8000s 10.0 n n
8.
 
Leica TL2optional n 3.7 1230 fixed Y 1/4000s 7.0 n n
9.
 
Leica Q Typ 1163680 n 3.0 1040 fixed Y 1/2000s 10.0 n Y
10.
 
Leica S2optical Y 3.0 460 fixed n 1/4000s 1.5 n n
11.
 
Sony A64002359 n 3.0 922 tilting Y 1/4000s 11.0 Y n
12.
 
Sony A7R IV5760 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
13.
 
Sony A61001440 n 3.0 922 tilting Y 1/4000s 11.0 Y n
14.
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
15.
 
Sony A93686 n 3.0 1440 tilting Y 1/8000s 20.0 n Y
16.
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
17.
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y

One feature that differentiates the A7S III and the S1 is in-body image stabilization (IBIS). The A7S III reduces the risk of handshake-induced blur with all attached lenses, while the S1 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The A7S III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the S1 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 A7S III 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 S1 writes its imaging data to external storage, while the A7S III uses CFexpress or SDXC cards.

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Connectivity comparison

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 S1 Pro and Sony Alpha 7S III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Leica S1----------
2.
 
Sony A7S IIIYstereomonoYYfull3.2Y-Y
3.
 
Canon RPYstereomonoYYmicro2.0Y-Y
4.
 
Canon 250DYstereomonoY-mini2.0Y-Y
5.
 
Fujifilm X-T30YstereomonoY-micro3.1Y-Y
6.
 
Leica M-E Typ 240Ymono----2.0---
7.
 
Leica CLYstereomono----Y--
8.
 
Leica TL2Ystereomono--micro3.0Y--
9.
 
Leica Q Typ 116Ystereomono--micro2.0YY-
10.
 
Leica S2Y----mini2.0---
11.
 
Sony A6400YstereomonoY-micro2.0YYY
12.
 
Sony A7R IVYstereomonoYYmicro3.1YYY
13.
 
Sony A6100YstereomonoY-micro2.0YYY
14.
 
Sony A7R IIIYstereomonoYYmicro3.1YYY
15.
 
Sony A9YstereomonoYYmicro2.0YYY
16.
 
Sony A7R IIYstereomonoYYmicro2.0YY-
17.
 
Sony A7S IIYstereomonoYYmicro2.0YY-

It is notable that the A7S III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the S1 does not provide wifi capability.

The A7S III is a recent model that features in the current product line-up of Sony. In contrast, the S1 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the S1 was succeeded by the Leica S2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Leica and Sony websites.

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Review summary

So how do things add up? Which of the two cameras – the Leica S1 or the Sony A7S III – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Leica S1 Pro:

  • More detail: Offers more megapixels (26.4 vs 12MP) with a 43% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
  • More heavily discounted: Has been available for much longer (launched in August 1996).

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Arguments in favor of the Sony Alpha 7S III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Broader imaging potential: Can capture not only stills but also 4K/120p video.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Rear screen: Has a backside LCD (3.0") for image review and settings control.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (10 vs 0.01 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (127x97mm vs 339x214mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 1801g or 72 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced into a lower priced category (84 percent cheaper at launch).
  • More modern: Reflects 23 years and 11 months of technical progress since the S1 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A7S III is the clear winner of the contest (19 : 5 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. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

S1 05:19 A7S III

How about other alternatives? Do the specifications of the Leica S1 and the Sony A7S III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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 incomplete and does no justice, for example, to the way the S1 or the A7S III perform in practice. 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.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Leica S1.......... Aug 1996 21,490i
2.
 
Sony A7S III..+ +91/1004.5/55/5 Jul 2020 3,499 i
3.
 
Canon RP4/5+..4.5/54/5 Feb 2019 1,299 i
4.
 
Canon 250D..o79/1004/54/5 Apr 2019 599 i
5.
 
Fujifilm X-T305/5+ +84/1004.5/54.5/5 Feb 2019 899 i
6.
 
Leica M-E Typ 240.......... Jun 2019 3,999 i
7.
 
Leica CL........4/5 Nov 2017 2,795 i
8.
 
Leica TL23.5/5....4/54/5 Jul 2017 1,950 i
9.
 
Leica Q Typ 1165/5..80/1004.5/54.5/5 Jun 2015 4,249i
10.
 
Leica S2.......... Sep 2008 22,995i
11.
 
Sony A64004/5+85/1004.5/54/5 Jan 2019 899 i
12.
 
Sony A7R IV5/5+91/1004.5/55/5 Jul 2019 3,499 i
13.
 
Sony A6100....82/1004/55/5 Aug 2019 749 i
14.
 
Sony A7R III..+ +90/1004.5/55/5 Oct 2017 3,199i
15.
 
Sony A95/5+ +89/1005/55/5 Apr 2017 4,499i
16.
 
Sony A7R II5/5+ +90/1005/55/5 Jun 2015 3,199i
17.
 
Sony A7S II5/5+..4.5/55/5 Sep 2015 2,999i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Leica S1:
Check Ebay offers
Sony A7S III:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Leica S1 vs Sony A7S III

    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 Specifications
    Camera Model Leica S1 Sony A7S III
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Leica R mount lenses Sony E mount lenses
    Launch Date August 1996 July 2020
    Launch Price USD 21,490 USD 3,499
    Sensor Specs Leica S1 Sony A7S III
    Sensor Technology CCD BSI-CMOS
    Sensor Format Medium Format Sensor Full Frame Sensor
    Sensor Size 36.0 x 36.0 mm 35.6 x 23.8 mm
    Sensor Area 1296 mm2 847.28 mm2
    Sensor Diagonal 50.9 mm 42.8 mm
    Crop Factor 0.85x 1.0x
    Sensor Resolution 26.4 Megapixels 12 Megapixels
    Image Resolution 5140 x 5140 pixels 4240 x 2832 pixels
    Pixel Pitch 7.01 μm 8.40 μm
    Pixel Density 2.04 MP/cm2 1.42 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability no Video 4K/120p Video
    ISO Setting 50 - 1,600 ISO 80 - 102,400 ISO
    ISO Boost no Enhancement 40 - 409,600 ISO
    DXO Sensor Quality (score) .. 86
    DXO Color Depth (bits) .. 23.7
    DXO Dynamic Range (EV) .. 13.9
    DXO Low Light (ISO) .. 2520
    Screen Specs Leica S1 Sony A7S III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.91x
    Viewfinder Resolution 9440k dots
    LCD Framing Live View
    Rear LCD Size 3.0inch
    LCD Resolution no LCD 1440k dots
    LCD Attachment Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Leica S1 Sony A7S III
    Focus System Manual Focus Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) .. 1/8000s
    Continuous Shooting 0.01 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Image Stabilizationno shake reductionIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium external CFexpress or SDXC cards
    Second Storage Option Dual card slots
    Connectivity Specs Leica S1 Sony A7S III
    External Flash no Hotshoe Hotshoe
    USB Connector no USB USB 3.2
    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
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Leica S1 Sony A7S III
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type external NP-FZ100
    In-Camera Charging no USB charging USB charging
    Body Dimensions 339 x 214 x 119 mm
    (13.3 x 8.4 x 4.7 in)
    127 x 97 x 81 mm
    (5.0 x 3.8 x 3.2 in)
    Camera Weight 2500 g (88.2 oz) 699 g (24.7 oz)

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