Panasonic Lumix DMC-LX7


Brand: Panasonic
Model: Lumix DMC-LX7
Megapixels: 10.10
Sensor: 1/1.7" (~ 7.53 x 5.64 mm)
Price: check here »

Sensor info

Panasonic LX7 comes with a 1/1.7" (~ 7.53 x 5.64 mm) CMOS sensor, which has a diagonal of 9.41 mm (0.37") and a surface area of 42.47 mm².
9.41 mm
Surface area
42.5 mm²
Pixel pitch
2.05 µm
Pixel area
4.2 µm²
Pixel density
23.86 MP/cm²
If you want to know about the accuracy of these numbers, click here.

Actual sensor size

Note: Actual size is set to screen → change »
This is the actual size of the LX7 sensor: ~7.53 x 5.64 mm
The sensor has a surface area of 42.5 mm². There are approx. 10,100,000 photosites (pixels) on this area. Pixel pitch, which is a measure of the distance between pixels, is 2.05 µm. Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next.

Pixel or photosite area is 4.2 µm². The larger the photosite, the more light it can capture and the more information can be recorded.

Pixel density tells you how many million pixels fit or would fit in one square cm of the sensor. Panasonic LX7 has a pixel density of 23.86 MP/cm².

These numbers are important in terms of assessing the overall quality of a digital camera. Generally, the bigger (and newer) the sensor, pixel pitch and photosite area, and the smaller the pixel density, the better the camera. If you want to see how LX7 compares to other cameras, click here.


Brand: Panasonic
Model: Lumix DMC-LX7
Effective megapixels: 10.10
Total megapixels: 12.80
Sensor size: 1/1.7" (~ 7.53 x 5.64 mm)
Sensor type: CMOS
Sensor resolution: 3678 x 2745
Max. image resolution: 3648 x 2736
Crop factor: 4.6
Optical zoom: 3.8x
Digital zoom: Yes
ISO: Auto, 80, 100, 200, 400, 800, 1600, 3200, 6400, (12800 with boost)
RAW support:
Manual focus:
Normal focus range: 50 cm
Macro focus range: 1 cm
Focal length (35mm equiv.): 24 - 90 mm
Aperture priority: Yes
Max aperture: f1.4 - f2.3
Max. aperture (35mm equiv.): f6.4 - f10.6
Depth of field: simulate →
Metering: Multi, Center-weighted, Spot
Exposure Compensation: ±3 EV (in 1/3 EV steps)
Shutter priority: Yes
Min. shutter speed: 60 sec
Max. shutter speed: 1/4000 sec
Built-in flash:
External flash:
Viewfinder: Electronic (optional)
White balance presets: 5
Screen size: 3"
Screen resolution: 920,000 dots
Video capture:
Max. video resolution: 1920x1080 (60p/60i/30p)
Storage types: SD/SDHC/SDXC, Internal
USB: USB 2.0 (480 Mbit/sec)
Battery: Lithium-Ion rechargeable battery
Weight: 298 g
Dimensions: 111 x 68 x 46 mm
Year: 2012

Compare LX7 with another camera



The diagonal of LX7 sensor is not 1/1.7 or 0.59" (14.9 mm) as you might expect, but approximately two thirds of that value - 0.37" (9.41 mm). If you want to know why, see sensor sizes.

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

Panasonic LX7 diagonal:

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.

Width = 7.53 mm
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

Panasonic LX7 pixel pitch:

Sensor width = 7.53 mm
Sensor resolution width = 3678 pixels
Pixel pitch =   7.53  × 1000  = 2.05 µm

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

Panasonic LX7 pixel area:

Pixel pitch = 2.05 µm

Pixel area = 2.05² = 4.2 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

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

Panasonic LX7 pixel density:

Sensor resolution width = 3678 pixels
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.

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
3. To get sensor resolution we then multiply X with the corresponding ratio:

Resolution horizontal: X × r
Resolution vertical: X

Panasonic Lumix DMC-LX7 sensor resolution:

Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 10.10
r = 7.53/5.64 = 1.34
X =  10.10 × 1000000  = 2745
Resolution horizontal: X × r = 2745 × 1.34 = 3678
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

Panasonic LX7 crop factor:

Sensor diagonal = 9.41 mm
Crop factor =   43.27  = 4.6

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).

Panasonic Lumix DMC-LX7 equivalent aperture:

Crop factor = 4.6
Aperture = f1.4 - f2.3

35-mm equivalent aperture = (f1.4 - f2.3) × 4.6 = f6.4 - f10.6

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