Leica CLUX 1 vs. Panasonic Lumix DMCLX7

vs. 


Leica CLUX 1  Panasonic Lumix DMCLX7  
Megapixels

6.00  10.10  
Max. resolution

2816 x 2112  3648 x 2736  
Price

Amazon, B&H Photo, Adorama  Amazon, B&H Photo, Adorama  
Sensor 

Sensor type

CCD  CMOS  
Sensor size

1/2.5" (~ 5.75 x 4.32 mm)  1/1.7" (~ 7.53 x 5.64 mm)  
Sensor resolution

2825 x 2124  3678 x 2745  
Diagonal

7.19 mm  9.41 mm  
Surface area

24.84 mm²  42.47 mm²  
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 sizes:
Surface area:
Panasonic Lumix DMCLX7 has approx. 71% more surface area than Leica CLUX 1.
Note: You are comparing sensors of very different generations.
There is a gap of 6 years between Leica CLUX 1 (2006) and
Panasonic Lumix DMCLX7 (2012).
Six years is a lot of time in terms
of technology, meaning newer sensors are overall much more
efficient than the older ones.


Pixel pitch

2.04 µm  2.05 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. 
Pixel pitch
Pixel pitch of Panasonic Lumix DMCLX7 is approx. 0.5% higher than pixel pitch of Leica CLUX 1.


Pixel area

4.16 µm²  4.2 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:
A pixel on Panasonic Lumix DMCLX7 sensor is approx. 1% bigger than a pixel on Leica CLUX 1.


Pixel density

24.14 MP/cm²  23.86 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. 
Pixel density
Leica CLUX 1 has approx. 1% higher pixel density than Panasonic Lumix DMCLX7.

To learn about the accuracy of these numbers,
click here.
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
Diagonal = √  w² + h² 
Leica CLUX 1 diagonal
The diagonal of Leica CLUX 1 image
sensor is not 1/2.5 inch as you might expect, but approximately two thirds of
that value. If you want to know why, see
sensor sizes.
w = 5.75 mm
h = 4.32 mm
w = 5.75 mm
h = 4.32 mm
Diagonal = √  5.75² + 4.32²  = 7.19 mm 
Panasonic Lumix DMCLX7 diagonal
The diagonal of Panasonic Lumix DMCLX7 image
sensor is not 1/1.7 inch as you might expect, but approximately two thirds of
that value. If you want to know why, see
sensor sizes.
w = 7.53 mm
h = 5.64 mm
w = 7.53 mm
h = 5.64 mm
Diagonal = √  7.53² + 5.64²  = 9.41 mm 
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
Leica CLUX 1 surface area
Width = 5.75 mm
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Panasonic Lumix DMCLX7 surface area
Width = 7.53 mm
Height = 5.64 mm
Surface area = 7.53 × 5.64 = 42.47 mm²
Height = 5.64 mm
Surface area = 7.53 × 5.64 = 42.47 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 
Leica CLUX 1 pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 2825 pixels
Sensor resolution width = 2825 pixels
Pixel pitch =  5.75  × 1000  = 2.04 µm 
2825 
Panasonic Lumix DMCLX7 pixel pitch
Sensor width = 7.53 mm
Sensor resolution width = 3678 pixels
Sensor resolution width = 3678 pixels
Pixel pitch =  7.53  × 1000  = 2.05 µm 
3678 
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
Pixel area =  sensor surface area in mm² 
effective megapixels 
Leica CLUX 1 pixel area
Pixel pitch = 2.04 µm
Pixel area = 2.04² = 4.16 µm²
Pixel area = 2.04² = 4.16 µm²
Panasonic Lumix DMCLX7 pixel area
Pixel pitch = 2.05 µm
Pixel area = 2.05² = 4.2 µm²
Pixel area = 2.05² = 4.2 µm²
Pixel density
Pixel density can be calculated with the following formula:
You could also use this formula:
Pixel density = (  sensor resolution width in pixels  )² / 1000000 
sensor width in cm 
You could also use this formula:
Pixel density =  effective megapixels × 1000000  / 10000 
sensor surface area in mm² 
Leica CLUX 1 pixel density
Sensor resolution width = 2825 pixels
Sensor width = 0.575 cm
Pixel density = (2825 / 0.575)² / 1000000 = 24.14 MP/cm²
Sensor width = 0.575 cm
Pixel density = (2825 / 0.575)² / 1000000 = 24.14 MP/cm²
Panasonic Lumix DMCLX7 pixel density
Sensor resolution width = 3678 pixels
Sensor width = 0.753 cm
Pixel density = (3678 / 0.753)² / 1000000 = 23.86 MP/cm²
Sensor width = 0.753 cm
Pixel density = (3678 / 0.753)² / 1000000 = 23.86 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. 22.8 × 15.5 sensor for example has a ratio of 1.47.
2. With the ratio (r) known we can calculate the X from the formula below, where X is a vertical number of pixels:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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. 22.8 × 15.5 sensor for example has a ratio of 1.47.
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 → 

Resolution horizontal: X × r
Resolution vertical: X
Leica CLUX 1 sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 6.00
Resolution horizontal: X × r = 2124 × 1.33 = 2825
Resolution vertical: X = 2124
Sensor resolution = 2825 x 2124
Sensor height = 4.32 mm
Effective megapixels = 6.00
r = 5.75/4.32 = 1.33 

Resolution vertical: X = 2124
Sensor resolution = 2825 x 2124
Panasonic Lumix DMCLX7 sensor resolution
Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 10.10
Resolution horizontal: X × r = 2745 × 1.34 = 3678
Resolution vertical: X = 2745
Sensor resolution = 3678 x 2745
Sensor height = 5.64 mm
Effective megapixels = 10.10
r = 7.53/5.64 = 1.34 

Resolution vertical: X = 2745
Sensor resolution = 3678 x 2745
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 
Leica CLUX 1 crop factor
Sensor diagonal in mm = 7.19 mm
Crop factor =  43.27  = 6.02 
7.19 
Panasonic Lumix DMCLX7 crop factor
Sensor diagonal in mm = 9.41 mm
Crop factor =  43.27  = 4.6 
9.41 
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).
Leica CLUX 1 equivalent aperture
Crop factor = 6.02
Aperture = f2.8  f4.6
35mm equivalent aperture = (f2.8  f4.6) × 6.02 = f16.9  f27.7
Aperture = f2.8  f4.6
35mm equivalent aperture = (f2.8  f4.6) × 6.02 = f16.9  f27.7
Panasonic Lumix DMCLX7 equivalent aperture
Crop factor = 4.6
Aperture = f1.4  f2.3
35mm equivalent aperture = (f1.4  f2.3) × 4.6 = f6.4  f10.6
Aperture = f1.4  f2.3
35mm equivalent aperture = (f1.4  f2.3) × 4.6 = f6.4  f10.6
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