Leica SL2 vs. Leica SL (Typ 601)

Comparison

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SL2 image
vs
SL (Typ 601) image
Leica SL2 Leica SL (Typ 601)
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Megapixels
47.30
24.00
Max. image resolution
8368 x 5584
6000 x 4000

Sensor

Sensor type
CMOS
CMOS
Sensor size
36 x 24 mm
36 x 24 mm
Sensor resolution
8423 x 5615
6000 x 4000
Diagonal
43.27 mm
43.27 mm
Sensor size comparison
Sensor size is generally a good indicator of the quality of the camera. Sensors can vary greatly in size. As a general rule, the bigger the sensor, the better the image quality.

Bigger sensors are more effective because they have more surface area to capture light. An important factor when comparing digital cameras is also camera generation. Generally, newer sensors will outperform the older.

Learn more about sensor sizes »

Actual sensor size

Note: Actual size is set to screen → change »
vs
1 : 1
(ratio)
Leica SL2 Leica SL (Typ 601)
Surface area:
864.00 mm² vs 864.00 mm²
Difference: 0 mm² (0%)
SL2 and SL (Typ 601) sensors are the same size.
Note: You are comparing cameras of different generations. There is a 4 year gap between Leica SL2 (2019) and Leica SL (Typ 601) (2015). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
4.27 µm
6 µm
Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next. It tells you how close the pixels are to each other.

The bigger the pixel pitch, the further apart they are and the bigger each pixel is. Bigger pixels tend to have better signal to noise ratio and greater dynamic range.
Difference: 1.73 µm (41%)
Pixel pitch of SL (Typ 601) is approx. 41% higher than pixel pitch of SL2.
Pixel area
18.23 µm²
36 µm²
Pixel or photosite area affects how much light per pixel can be gathered. The larger it is the more light can be collected by a single pixel.

Larger pixels have the potential to collect more photons, resulting in greater dynamic range, while smaller pixels provide higher resolutions (more detail) for a given sensor size.
Relative pixel sizes:
vs
Pixel area difference: 17.77 µm² (97%)
A pixel on Leica SL (Typ 601) sensor is approx. 97% bigger than a pixel on Leica SL2.
Pixel density
5.47 MP/cm²
2.78 MP/cm²
Pixel density tells you how many million pixels fit or would fit in one square cm of the sensor.

Higher pixel density means smaller pixels and lower pixel density means larger pixels.
Difference: 2.69 µm (97%)
Leica SL2 has approx. 97% higher pixel density than Leica SL (Typ 601).
To learn about the accuracy of these numbers, click here.



Specs

Leica SL2
Leica SL (Typ 601)
Crop factor
1
1
Total megapixels
Effective megapixels
47.30
24.00
Optical zoom
 
Digital zoom
ISO sensitivity
Auto, 100-50000 (extends to 50)
Auto, 50-50000
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture
Max. aperture (35mm equiv.)
n/a
n/a
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±3 EV (in 1/3 EV, 1/2 EV steps)
±3 EV (in 1/3 EV, 1/2 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
1800 sec
60 sec
Max. shutter speed
1/8000 sec
1/8000 sec
Built-in flash
External flash
Viewfinder
Electronic
Electronic
White balance presets
8
8
Screen size
3.2"
3"
Screen resolution
2,100,000 dots
1,040,000 dots
Video capture
Max. video resolution
4992x3744 (30p/​25p/​24p)
4096x2160 (24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC (UHS-II support)
USB
USB 3.0 (5 GBit/sec)
USB 3.0 (5 GBit/sec)
HDMI
Wireless
GPS
Battery
BP-SCL4 lithium-ion battery
Proprietary lithium-ion battery
Weight
928 g
847 g
Dimensions
146 x 107 x 42 mm
147 x 104 x 39 mm
Year
2019
2015




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vs

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height

Leica SL2 diagonal

w = 36.00 mm
h = 24.00 mm
Diagonal =  36.00² + 24.00²   = 43.27 mm

Leica SL (Typ 601) diagonal

w = 36.00 mm
h = 24.00 mm
Diagonal =  36.00² + 24.00²   = 43.27 mm


Surface area

Surface area is calculated by multiplying the width and the height of a sensor.

SL2 sensor area

Width = 36.00 mm
Height = 24.00 mm

Surface area = 36.00 × 24.00 = 864.00 mm²

SL (Typ 601) sensor area

Width = 36.00 mm
Height = 24.00 mm

Surface area = 36.00 × 24.00 = 864.00 mm²


Pixel pitch

Pixel pitch is the distance from the center of one pixel to the center of the next measured in micrometers (µm). It can be calculated with the following formula:
Pixel pitch =   sensor width in mm  × 1000
sensor resolution width in pixels

SL2 pixel pitch

Sensor width = 36.00 mm
Sensor resolution width = 8423 pixels
Pixel pitch =   36.00  × 1000  = 4.27 µm
8423

SL (Typ 601) pixel pitch

Sensor width = 36.00 mm
Sensor resolution width = 6000 pixels
Pixel pitch =   36.00  × 1000  = 6 µm
6000


Pixel area

The area of one pixel can be calculated by simply squaring the pixel pitch:
Pixel area = pixel pitch²

You could also divide sensor surface area with effective megapixels:
Pixel area =   sensor surface area in mm²
effective megapixels

SL2 pixel area

Pixel pitch = 4.27 µm

Pixel area = 4.27² = 18.23 µm²

SL (Typ 601) pixel area

Pixel pitch = 6 µm

Pixel area = 6² = 36 µm²


Pixel density

Pixel density can be calculated with the following formula:
Pixel density =  ( sensor resolution width in pixels )² / 1000000
sensor width in cm

One could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

SL2 pixel density

Sensor resolution width = 8423 pixels
Sensor width = 3.6 cm

Pixel density = (8423 / 3.6)² / 1000000 = 5.47 MP/cm²

SL (Typ 601) pixel density

Sensor resolution width = 6000 pixels
Sensor width = 3.6 cm

Pixel density = (6000 / 3.6)² / 1000000 = 2.78 MP/cm²


Sensor resolution

Sensor resolution is calculated from sensor size and effective megapixels. It's slightly higher than maximum (not interpolated) image resolution which is usually stated on camera specifications. Sensor resolution is used in pixel pitch, pixel area, and pixel density formula. For sake of simplicity, we're going to calculate it in 3 stages.

1. First we need to find the ratio between horizontal and vertical length by dividing the former with the latter (aspect ratio). It's usually 1.33 (4:3) or 1.5 (3:2), but not always.

2. With the ratio (r) known we can calculate the X from the formula below, where X is a vertical number of pixels:
(X × r) × X = effective megapixels × 1000000    →   
X =  effective megapixels × 1000000
r
3. To get sensor resolution we then multiply X with the corresponding ratio:

Resolution horizontal: X × r
Resolution vertical: X

SL2 sensor resolution

Sensor width = 36.00 mm
Sensor height = 24.00 mm
Effective megapixels = 47.30
r = 36.00/24.00 = 1.5
X =  47.30 × 1000000  = 5615
1.5
Resolution horizontal: X × r = 5615 × 1.5 = 8423
Resolution vertical: X = 5615

Sensor resolution = 8423 x 5615

SL (Typ 601) sensor resolution

Sensor width = 36.00 mm
Sensor height = 24.00 mm
Effective megapixels = 24.00
r = 36.00/24.00 = 1.5
X =  24.00 × 1000000  = 4000
1.5
Resolution horizontal: X × r = 4000 × 1.5 = 6000
Resolution vertical: X = 4000

Sensor resolution = 6000 x 4000


Crop factor

Crop factor or focal length multiplier is calculated by dividing the diagonal of 35 mm film (43.27 mm) with the diagonal of the sensor.
Crop factor =   43.27 mm
sensor diagonal in mm


SL2 crop factor

Sensor diagonal in mm = 43.27 mm
Crop factor =   43.27  = 1
43.27

SL (Typ 601) crop factor

Sensor diagonal in mm = 43.27 mm
Crop factor =   43.27  = 1
43.27

35 mm equivalent aperture

Equivalent aperture (in 135 film terms) is calculated by multiplying lens aperture with crop factor (a.k.a. focal length multiplier).

SL2 equivalent aperture

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Leica SL2, take the aperture of the lens you're using and multiply it with crop factor.

Since crop factor for Leica SL2 is 1, the equivalent aperture is aperture.

SL (Typ 601) equivalent aperture

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Leica SL (Typ 601), take the aperture of the lens you're using and multiply it with crop factor.

Since crop factor for Leica SL (Typ 601) is 1, the equivalent aperture is aperture.

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