Panasonic Lumix DC-LX100 II vs. Nikon D3100

Comparison

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Lumix DC-LX100 II image
vs
D3100 image
Panasonic Lumix DC-LX100 II Nikon D3100
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Megapixels
17.00
14.20
Max. image resolution
4736 x 3552
4608 x 3072

Sensor

Sensor type
CMOS
CMOS
Sensor size
Four Thirds (17.3 x 13 mm)
23.1 x 15.4 mm
Sensor resolution
4755 x 3575
4616 x 3077
Diagonal
21.64 mm
27.76 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 : 1.58
(ratio)
Panasonic Lumix DC-LX100 II Nikon D3100
Surface area:
224.90 mm² vs 355.74 mm²
Difference: 130.84 mm² (58%)
D3100 sensor is approx. 1.58x bigger than Lumix DC-LX100 II sensor.
Note: You are comparing sensors of very different generations. There is a gap of 8 years between Panasonic Lumix DC-LX100 II (2018) and Nikon D3100 (2010). Eight years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
3.64 µm
5 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: 1.36 µm (37%)
Pixel pitch of D3100 is approx. 37% higher than pixel pitch of Lumix DC-LX100 II.
Pixel area
13.25 µm²
25 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: 11.75 µm² (89%)
A pixel on Nikon D3100 sensor is approx. 89% bigger than a pixel on Panasonic Lumix DC-LX100 II.
Pixel density
7.55 MP/cm²
3.99 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: 3.56 µm (89%)
Panasonic Lumix DC-LX100 II has approx. 89% higher pixel density than Nikon D3100.
To learn about the accuracy of these numbers, click here.

Specs

Panasonic Lumix DC-LX100 II
Nikon D3100
Crop factor
2
1.56
Total megapixels
21.77
14.80
Effective megapixels
17.00
14.20
Optical zoom
3.1x
Digital zoom
Yes
No
ISO sensitivity
Auto, 200-25600 (extendable to 100)
Auto, 100, 200, 400, 800, 1600, 3200 (12800 with boost)
RAW
Manual focus
Normal focus range
50 cm
Macro focus range
3 cm
Focal length (35mm equiv.)
24 - 75 mm
Aperture priority
Yes
Yes
Max. aperture
f1.7 - f2.8
Max. aperture (35mm equiv.)
f3.4 - f5.6
n/a
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Average
Exposure compensation
±5 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
60 sec
30 sec
Max. shutter speed
1/16000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic
Optical (pentamirror)
White balance presets
5
12
Screen size
3"
3"
Screen resolution
1,240,000 dots
230,000 dots
Video capture
Max. video resolution
3840x2160 (30p/24p)
1920x1080 (24p)
Storage types
SD/SDHC/SDXC
SDHC, SDXC, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Li-ion Battery Pack
Lithium-Ion EN-EL14 rechargeable battery
Weight
392 g
505 g
Dimensions
115 x 66.2 x 64.2 mm
124 x 96 x 75 mm
Year
2018
2010



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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 Lumix DC-LX100 II diagonal

w = 17.30 mm
h = 13.00 mm
Diagonal =  17.30² + 13.00²   = 21.64 mm

Nikon D3100 diagonal

w = 23.10 mm
h = 15.40 mm
Diagonal =  23.10² + 15.40²   = 27.76 mm


Surface area

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

Lumix DC-LX100 II sensor area

Width = 17.30 mm
Height = 13.00 mm

Surface area = 17.30 × 13.00 = 224.90 mm²

D3100 sensor area

Width = 23.10 mm
Height = 15.40 mm

Surface area = 23.10 × 15.40 = 355.74 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

Lumix DC-LX100 II pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4755 pixels
Pixel pitch =   17.30  × 1000  = 3.64 µm
4755

D3100 pixel pitch

Sensor width = 23.10 mm
Sensor resolution width = 4616 pixels
Pixel pitch =   23.10  × 1000  = 5 µm
4616


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

Lumix DC-LX100 II pixel area

Pixel pitch = 3.64 µm

Pixel area = 3.64² = 13.25 µm²

D3100 pixel area

Pixel pitch = 5 µm

Pixel area = 5² = 25 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

Lumix DC-LX100 II pixel density

Sensor resolution width = 4755 pixels
Sensor width = 1.73 cm

Pixel density = (4755 / 1.73)² / 1000000 = 7.55 MP/cm²

D3100 pixel density

Sensor resolution width = 4616 pixels
Sensor width = 2.31 cm

Pixel density = (4616 / 2.31)² / 1000000 = 3.99 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

Lumix DC-LX100 II sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 17.00
r = 17.30/13.00 = 1.33
X =  17.00 × 1000000  = 3575
1.33
Resolution horizontal: X × r = 3575 × 1.33 = 4755
Resolution vertical: X = 3575

Sensor resolution = 4755 x 3575

D3100 sensor resolution

Sensor width = 23.10 mm
Sensor height = 15.40 mm
Effective megapixels = 14.20
r = 23.10/15.40 = 1.5
X =  14.20 × 1000000  = 3077
1.5
Resolution horizontal: X × r = 3077 × 1.5 = 4616
Resolution vertical: X = 3077

Sensor resolution = 4616 x 3077


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


Lumix DC-LX100 II crop factor

Sensor diagonal in mm = 21.64 mm
Crop factor =   43.27  = 2
21.64

D3100 crop factor

Sensor diagonal in mm = 27.76 mm
Crop factor =   43.27  = 1.56
27.76

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).

Lumix DC-LX100 II equivalent aperture

Crop factor = 2
Aperture = f1.7 - f2.8

35-mm equivalent aperture = (f1.7 - f2.8) × 2 = f3.4 - f5.6

D3100 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 Nikon D3100, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Nikon D3100 is 1.56

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