How do I convert focal length from mm to pixels?
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Hello,
I used the Exif data to determine the focal length of an image. and i get it with measure unit (mm) and in need to convert it to pixels
How do I convert focal length from mm to pixels??
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답변 (2개)
bym
2011년 7월 2일
Does the Exif data contain the CCD width information? If so, use: focal length in pixels = (image width in pixels) * (focal length in mm) / (CCD width in mm)
George Abrahams
2024년 1월 23일
Let F be the focal length in mm, be the focal length in pixels, and be the pixel size in mm.
Then, and .
The values for should be available in, or derivable from, the camera's technical specifications.
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