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Formula 11 Pixel Size
PS = 1 / ((NP / LD)/1000)
Where:
- PS is Pixel Size in microns
- NP is the Number of Pixels on one side of the sensor
- LD is the size of that one side of the sensor in millimeters
- 1000 is the number of microns in a millimeter
Example: What is the size of a pixel in the Canon 20Da camera that has a 22.5mm x 15mm sensor with 3504 x 2336 pixels.
Since the pixels are square, we only need to work with one dimension. Let's use the 22.5mm side with 3504 pixels.
PS = 1 / [(NP / LD)/1000]
PS = 1 / [(3504 / 22.5)/1000]
PS = 1 / [(155.73)/1000]
PS = 1/ 0.15573
PS = 6.4 microns
There are 3504 pixels in 22.5 millimeters, so each pixel is 6.4 microns on a side.
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