Here is the problem I've been trying to solve for a couple of weeks. I have taken 2 pictures of an object of an unknown size with a camera. The first picture of the object was 1162 pixels across. I moved 419.1 mm closer and took a second picture, which was 1429 pixels across.(adsbygoogle = window.adsbygoogle || []).push({});

Can I calculate the size of the object in mm? What if I had a table of radians per pixel at different distances, could you deduce the distance from that?

Focal length: 3.85mm

Aperture: f/2.8

Shutter: 1/15

Resolution: 2048 x 1536

Let me know if you want some test data to test your calculations.

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# Calculation of size from images at unknown distance

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