Panasonic Lumix DMC-LZ10 vs. Sigma DP2 Merrill

Comparison

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Lumix DMC-LZ10 image
vs
DP2 Merrill image
Panasonic Lumix DMC-LZ10 Sigma DP2 Merrill
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Megapixels
10.10
15.40
Max. image resolution
3648 x 2736
Note: Sigma DP2 Merrill uses Foveon X3 image sensor, which is a new type of sensor that has 3 layers of photoelements stacked together in 1 pixel location. Traditional CCD/CMOS sensors have 1 pixel for 1 color, whereas Foveon sensor captures all 3 colors (blue, green, and red) at every pixel.

Sensor

Sensor type
CCD
Foveon
Sensor size
1/2.33" (~ 6.08 x 4.56 mm)
24 x 16 mm
Sensor resolution
3665 x 2756
4806 x 3204
Diagonal
7.60 mm
28.84 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 : 13.85
(ratio)
Panasonic Lumix DMC-LZ10 Sigma DP2 Merrill
Surface area:
27.72 mm² vs 384.00 mm²
Difference: 356.28 mm² (1285%)
DP2 Merrill sensor is approx. 13.85x bigger than LZ10 sensor.
Note: You are comparing cameras of different generations. There is a 4 year gap between Panasonic LZ10 (2008) and Sigma DP2 Merrill (2012). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
1.66 µm
4.99 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: 3.33 µm (201%)
Pixel pitch of DP2 Merrill is approx. 201% higher than pixel pitch of LZ10.
Pixel area
2.76 µm²
24.9 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: 22.14 µm² (802%)
A pixel on Sigma DP2 Merrill sensor is approx. 802% bigger than a pixel on Panasonic LZ10.
Pixel density
36.34 MP/cm²
4.01 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: 32.33 µm (806%)
Panasonic LZ10 has approx. 806% higher pixel density than Sigma DP2 Merrill.
To learn about the accuracy of these numbers, click here.



Specs

Panasonic LZ10
Sigma DP2 Merrill
Crop factor
5.69
1.5
Total megapixels
10.70
15.40
Effective megapixels
10.10
15.40
Optical zoom
5x
Digital zoom
Yes
ISO sensitivity
Auto, Hi Auto, (1600-6400), 100, 200, 400, 800, 1600
RAW
Manual focus
Normal focus range
50 cm
Macro focus range
5 cm
Focal length (35mm equiv.)
30 - 150 mm
Aperture priority
Yes
Max. aperture
f3.3 - f5.9
f2.8
Max. aperture (35mm equiv.)
f18.8 - f33.6
f4.2
Metering
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
Min. shutter speed
60 sec
Max. shutter speed
1/2000 sec
Built-in flash
External flash
Viewfinder
None
None
White balance presets
4
Screen size
2.5"
Screen resolution
230,000 dots
920,000 dots
Video capture
Max. video resolution
Storage types
SD/MMC/SDHC card, Internal
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
AA (2) NiMH batteries
Weight
191 g
330 g
Dimensions
98 x 62 x 33 mm
122 x 67 x 59 mm
Year
2008
2012




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Diagonal

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

Panasonic LZ10 diagonal

The diagonal of LZ10 sensor is not 1/2.33 or 0.43" (10.9 mm) as you might expect, but approximately two thirds of that value - 7.6 mm. If you want to know why, see sensor sizes.

w = 6.08 mm
h = 4.56 mm
Diagonal =  6.08² + 4.56²   = 7.60 mm

Sigma DP2 Merrill diagonal

w = 24.00 mm
h = 16.00 mm
Diagonal =  24.00² + 16.00²   = 28.84 mm


Surface area

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

LZ10 sensor area

Width = 6.08 mm
Height = 4.56 mm

Surface area = 6.08 × 4.56 = 27.72 mm²

DP2 Merrill sensor area

Width = 24.00 mm
Height = 16.00 mm

Surface area = 24.00 × 16.00 = 384.00 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

LZ10 pixel pitch

Sensor width = 6.08 mm
Sensor resolution width = 3665 pixels
Pixel pitch =   6.08  × 1000  = 1.66 µm
3665

DP2 Merrill pixel pitch

Sensor width = 24.00 mm
Sensor resolution width = 4806 pixels
Pixel pitch =   24.00  × 1000  = 4.99 µm
4806


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

LZ10 pixel area

Pixel pitch = 1.66 µm

Pixel area = 1.66² = 2.76 µm²

DP2 Merrill pixel area

Pixel pitch = 4.99 µm

Pixel area = 4.99² = 24.9 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

LZ10 pixel density

Sensor resolution width = 3665 pixels
Sensor width = 0.608 cm

Pixel density = (3665 / 0.608)² / 1000000 = 36.34 MP/cm²

DP2 Merrill pixel density

Sensor resolution width = 4806 pixels
Sensor width = 2.4 cm

Pixel density = (4806 / 2.4)² / 1000000 = 4.01 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

LZ10 sensor resolution

Sensor width = 6.08 mm
Sensor height = 4.56 mm
Effective megapixels = 10.10
r = 6.08/4.56 = 1.33
X =  10.10 × 1000000  = 2756
1.33
Resolution horizontal: X × r = 2756 × 1.33 = 3665
Resolution vertical: X = 2756

Sensor resolution = 3665 x 2756

DP2 Merrill sensor resolution

Sensor width = 24.00 mm
Sensor height = 16.00 mm
Effective megapixels = 15.40
r = 24.00/16.00 = 1.5
X =  15.40 × 1000000  = 3204
1.5
Resolution horizontal: X × r = 3204 × 1.5 = 4806
Resolution vertical: X = 3204

Sensor resolution = 4806 x 3204


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


LZ10 crop factor

Sensor diagonal in mm = 7.60 mm
Crop factor =   43.27  = 5.69
7.60

DP2 Merrill crop factor

Sensor diagonal in mm = 28.84 mm
Crop factor =   43.27  = 1.5
28.84

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).

LZ10 equivalent aperture

Crop factor = 5.69
Aperture = f3.3 - f5.9

35-mm equivalent aperture = (f3.3 - f5.9) × 5.69 = f18.8 - f33.6

DP2 Merrill equivalent aperture

Crop factor = 1.5
Aperture = f2.8

35-mm equivalent aperture = (f2.8) × 1.5 = f4.2

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