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What is the pixel pitch of the Panasonic GX1?

The Panasonic Lumix DMC-GX1 provides 15.8 megapixels from a Four Thirds sensor. This pixel density gives rise to a size of the individual pixel of 3.77µm.

The pixel size or pixel pitch can be calculated by dividing the sensor area by the pixel count and then taking the square root. In particular, the sensor in the Panasonic GX1 measures 17.3mm in width and 13.0mm in height, so that the total imaging area of the sensor amounts to 225 mm2. Moreover, the GX1 has 4 592 horizontal pixels and 3 448 vertical pixels, for a total of 15.8 megapixels. Then, the size (height or width) of each individual pixel can be calculated as the square root of the ratio of the sensor area (225 mm2) to the MP count (15 833 216).

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Larger pixels provide advantages with respect to gathering light, particularly in low-light situations. Large pixels notably have a better signal to noise ratio, meaning that they can better differentiate between incoming photons and the noisy signals that the internal processes of the camera create. As a result, big pixels are particularly helpful to the photographer when shooting with high ISO settings.

Sensor specs and performance

The table below compares the sensor specs of the Panasonic GX1 to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Panasonic GX1 Four Thirds 15.8 4592 34481080/60p20.810.670355
2.
 
Panasonic GM5 Four Thirds 15.8 4592 34481080/60p22.111.772166
3.
 
Panasonic GF6 Four Thirds 15.8 4592 34481080/60i20.710.662254
4.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
5.
 
Panasonic G5 Four Thirds 15.9 4608 34561080/60p21.411.661861
6.
 
Panasonic GF5 Four Thirds 12.0 4000 30001080/60i20.510.057350
7.
 
Panasonic G3 Four Thirds 15.8 4592 34481080/60i21.010.666756
8.
 
Panasonic GF3 Four Thirds 12.0 4000 30001080/60i20.610.145950
9.
 
Panasonic G10 Four Thirds 12.0 4000 3000720/30p21.210.141152
10.
 
Panasonic GF2 Four Thirds 12.0 4000 30001080/60i21.210.350654
11.
 
Panasonic GH2 Four Thirds 15.9 4608 34561080/60i21.211.365560
Further information on the sensor in the Panasonic GX1 and the camera's operation can be found in the camera manual.

In the United States, the GX1 was initially launched in November 2011 at a price of $699.

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Camera to camera comparisons

In case you are interested in seeing how this camera compares to another one, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications Summary
    Camera Model Panasonic GX1
    Camera Type Mirrorless system camera
    Camera Lens Micro Four Thirds lenses
    Launch Date November 2011
    Launch Price USD 699
    Sensor Specs
    Sensor Technology CMOS
    Sensor Format Four Thirds Sensor
    Sensor Size 17.3 x 13.0 mm
    Sensor Area 225 mm2
    Sensor Diagonal 21.6 mm
    Crop Factor 2.0x
    Sensor Resolution 15.8 Megapixels
    Image Resolution 4 592 x 3 448 pixels
    Pixel Pitch 3.77 μm
    Pixel Density 7.04 MP/cm2
    Moiré control Anti-Alias filter
    Movie Capability 1080/60p Video
    ISO Setting 160 - 12 800 ISO
    Image Processor Venus FHD
    DXO Sensor Quality (score) 55
    DXO Color Depth (bits) 20.8
    DXO Dynamic Range (EV) 10.6
    DXO Low Light (ISO) 703
    Screen Specs
    Viewfinder Type Viewfinder optional
    Top-Level Screen no Top Display
    LCD Framing Live View
    LCD Size 3.0 inch
    LCD Resolution 460k dots
    LCD Attachment Fixed screen
    Touch Input Touchscreen
    Shooting Specs
    Focus System Contrast-detect AF
    Manual Focusing AidFocus Peaking
    Maximum Shutter Speed 1/4000s
    Continuous Shooting 4.2 shutter flaps/s
    Shutter Life Expectancy100 000 actuations
    Silent Shootingno E-Shutter
    Time Lapse Photographyno Intervalometer
    Fill Flash Built-in Flash
    Storage Medium SDXC cards
    Single or Dual Card Slots Single card slot
    UHS card support UHS-I
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port mini HDMI
    Wifi Support no Wifi
    Body Specs
    Battery Type DMW-BLD10 power pack
    Battery Life (CIPA)320 shots per charge
    Body Dimensions 116 x 68 x 39 mm
    (4.6 x 2.7 x 1.5 in)
    Camera Weight 318 g (11.2 oz)

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