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Leica SL2-S vs Sony a7 III Comparison

Storage & Battery

Leica SL2-S

Leica SL2-S camera image

Sony a7 III

Sony A7 III camera
Leica SL2-S
Sony a7 III
a7 III
Refers to the year this camera was officially made available for sale.
Announcement Date
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
December 10, 2020
February 27, 2018
Camera Type
Camera Size
Camera Weight

The Leica SL2-S and the Sony a7 III score head to head in our comparison. Both cameras are mirrorless and share some common specifications. However, the Leica SL2-S, released in 2020, boasts a higher launch price of $4895 and a larger size of 146 x 107 x 83mm, contributing to its heavier weight of 931g (2.05lbs).

On the other hand, the Sony a7 III, released in 2018, has a more affordable launch price of $2000 and a smaller size of 127 x 96 x 74mm, making it lighter at 650g (1.43lbs). While the Leica SL2-S has a slight advantage in performance, the Sony a7 III offers a more budget-friendly and compact option for photographers. Each camera has its strengths, so the choice ultimately depends on the user’s preferences and needs.

Leica SL2-S vs Sony a7 III Overview and Optics

The Leica SL2-S comes out on top in this optics comparison, with a score of 85/100, compared to the Sony a7 III’s score of 81/100. Both cameras share several common specifications, such as a CMOS sensor, full-frame sensor size, and image stabilization. However, there are key differences that set the Leica SL2-S apart.

The Leica SL2-S has a slight edge in megapixels, featuring 24.6 compared to the Sony a7 III’s 24.2. This difference contributes to the Leica’s higher score. Additionally, the Leica SL2-S has a significantly faster shooting speed of 20 frames per second, doubling the Sony a7 III’s 10 frames per second. This faster shooting speed allows the Leica SL2-S to capture more images in a shorter amount of time, making it better suited for action photography.

The Sony a7 III does have one advantage over the Leica SL2-S: its DXOMARK sensor score of 96, which is one point higher than the Leica SL2-S’s score of 95. This suggests that the Sony a7 III’s sensor may perform slightly better in certain situations, such as low-light photography.

However, the Leica SL2-S’s higher overall score, increased megapixels, and faster shooting speed make it the superior camera in terms of optics. The Sony a7 III’s marginally higher DXOMARK sensor score does not significantly impact the overall comparison. Therefore, the Leica SL2-S is the better choice for photographers seeking a camera with superior optics.

The higher the number of megapixels, the more detail the cameras sensor can capture.
24.6 MP
24.2 MP
Image Resolution
Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution.
6000 x 4000 px
6000 x 4000 px
Sensor Type
The camera sensor captures light and records the image. Sensors vary in physical size, the number of pixels, and quality.
Sensor Size
The sensor size contributes to the overall quality as well as the dynamic and tonal range a camera can capture. As a rule of thumb, the more surface there is to read the light, the more information it will capture.
24 x 36 mm
23.8 x 35.6 mm
Sensor Format
Refers to the most commonly used sensor sizes.
Full Frame
Full Frame
Frame Rate
The number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode.
20 fps
10 fps
Lens Mount
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Leica L
Sony FE
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
Maestro III
Bionz X
Aspect Ratio
The aspect ratio refers to the proportional difference between width and height. The most popular aspect ratios are 3:2 and 4:3.
Minimum ISO (Native)
Refers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image.
Maximum ISO (Native)
Refers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise.
Minimum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Maximum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Minimum Shutter Speed
The minimum shutter speed will tell you the longest exposure your camera can take without using an external accessory.
60 s
30 s
Maximum Shutter Speed
The maximum shutter speed tells you the length inside 1 second the camera will capture. These can sometimes be extended with accessories such as extra external batteries.
1/ 16000 s
1/ 8000 s
Autofocus Points
Autofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings.
In-body Stabilization
In-body Stabilization means the camera has a certain technology embedded that counteracts camera shake.
Viewfinder Type
The viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens.
Viewfinder Resolution
5,760,000 dots
2,359,296 dots

Leica SL2-S vs Sony a7 III Video Performance

The Leica SL2-S outperforms the Sony a7 III in video capabilities with a score of 83/100, a significant 27-point lead over the Sony a7 III’s score of 70. Both cameras offer 4K video resolution, but the Leica SL2-S has superior video dimensions at 4096 x 2160 compared to the Sony a7 III’s 3840 x 2160.

One primary advantage of the Leica SL2-S over the Sony a7 III is its higher maximum video frame rate of 60fps, while the Sony a7 III maxes out at 30fps. This higher frame rate allows the Leica SL2-S to capture smoother and more detailed video, especially in fast-paced situations.


Indicates if this camera is capable of recording video.
Max Video Resolution
The best resolution this camera can capture video in. Modern cameras can capture up to 8K video.
Max Video Dimensions
Video resolution measured by the greatest number of pixels possible in each frame, width by height. A higher resolution means more detail or clarity in your video.
4096 x 2160 px
3840 x 2160 px
Max Video Frame Rate
How many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect.
60 p
30 p
Time-Lapse Built In
A built in time-lapse mode will allow continuous shooting throughout a prolonged period of time to be compressed into a sped up video.
Video File Format
Different cameras can record in various video file formats. The File format you record in can impact how you edit and use the files.

Leica SL2-S vs Sony a7 III Features and Benefits

The Sony a7 III outperforms the Leica SL2-S in features, scoring 81 out of 100 compared to the Leica SL2-S’s score of 74. Both cameras share some common specifications, including touchscreen capabilities, WIFI, and Bluetooth connectivity. However, the two cameras differ in other key aspects, which contribute to the Sony a7 III’s higher score.

The Sony a7 III has a flip screen, which the Leica SL2-S lacks. This feature enhances the camera’s versatility, allowing for more flexible shooting angles and better framing options. In contrast, the Leica SL2-S has a higher screen resolution, boasting 2,100,000 dots compared to the Sony a7 III’s 921,600 dots. This results in crisper and clearer image previews on the Leica SL2-S. Despite the higher resolution, the lack of a flip screen makes the Leica SL2-S less versatile in terms of usability.

The Sony a7 III’s higher feature score makes it a better camera in terms of versatility and ease of use, thanks to its flip screen. However, the Leica SL2-S offers superior screen resolution, providing users with a more detailed preview of their images. Both cameras have their strengths and weaknesses, with the Sony a7 III being more adaptable, and the Leica SL2-S offering a higher quality viewing experience.

When considering these factors, the Sony a7 III emerges as the more practical and versatile option for most photographers, while the Leica SL2-S may appeal to those who prioritize screen resolution and image preview quality.

Built-in Flash
A built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it.
External Flash
External flashes are often connected through a hot shoe at the top of a camera, or a cable at the side of the camera.
GPS features in a camera will include location metadata to each of your photographs.
Weather Sealing
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Screen Type
Touch Screen
Touchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons.
Screen Size
Screen Resolution
Screen dots indicate the resolution of the LCD screen by including each sub pixel.
2,100,000 dots
921,600 dots
Flip Screen
A flip screen (or articulating screen) is a second screen which can flip out from the side or top of the camera. This rotating screen allows you more freedom to take photos at different angles.
Live View
Live View feature allows you to see a continuous live video of what is being seen through your lens.
Bluetooth capabilities allow you wireless control of your camera with other external devices.

Leica SL2-S vs Sony a7 III Storage and Battery

The Leica SL2-S and the Sony a7 III share common features, such as having two memory card slots and accepting SD, SDHC, and SDXC cards.

However, the Sony a7 III has a longer battery life of 750 shots, while the Leica SL2-S offers 510 shots per charge. This extended battery life is beneficial for photographers who need to capture a large number of images without frequently changing batteries.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC, Memory Stick Duo / Pro Duo / Pro-HG Duo
Dual Memory Card Slots
Battery Type
Battery Life
Approximately how long this cameras battery will last measured by how many photographs you will be able to take.
510 shots
750 shots
USB Charging
Sensor scores tested by DXOMARK
Overall Score
DXOMARK overall sensor score.
Portrait (Color Depth)
As described by DXOMARK 'The Portrait score in our camera sensor reviews defines color depth performance and its unit is a number of bits. A color depth of 22 bits is excellent; differences below 1 bit are barely noticeable.'
25.2 bits
25.1 bits
Landscape (Dynamic Range)
As described by DXOMARK 'The Landscape score in our camera sensor tests defines the maximum dynamic range of the camera sensor and its unit is an exposure value (EV). A value of 12 EV is excellent with differences below 0.5 EV usually not noticeable.'
14.1 EVs
14.7 EVs
Sports (Low-Light ISO)
Described by DXOMARK as 'The maximal value of ISO sensitivity needed to reach a given value of Signal-to-Noise Ratio (SNR). The greater the value, the better'
Main Features
Extra Features
Construction and Durability
Handling and Ergonomics
Value for Money
Total Score

Leica SL2-S vs Sony a7 III Alternatives

User Scores
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