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The key to this is knowing the camera's sensor size. With the sensor size, image pixel resolution, focal length, and known subject size, you can back-calculate (well, estimate) the distance between the camera and subject (assuming that the subject is reasonably parallel to the camera sensor plane).
Use the Measure app and your iPhone camera to measure nearby objects. iPhone automatically detects the dimensions of rectangular objects, or you can manually set the start and end points of a measurement.
I want to calculate the distance between two objects using an iPhone camera. Suppose I'm standing with my iPhone 10 feet away from the objects. Now, I want to calculate the distance between those two objects. Suppose these two objects are on a straight horizontal line.
16 lip 2016 · Provided you can measure all angles and distance between two camera positions, you can also calculate distance to the remote object. But measuring all angles is not an easy task. An easier approach is to take two photos which stay on the same line with the object, with object in the center of the image.
3 dni temu · To calculate the camera field of view, you need to know three parameters: The focal length f of the lens. The camera sensor's size (w × l). The distance d from the camera to the subject. Then, follow these steps: Calculate the angle of view for each side of the sensor sᵢ with the formula: aovᵢ = 2 × arctan(sᵢ/(2 × f))
18 gru 2015 · Rangefinder cameras (like Leicas) do exactly this: you see 2 two images taken with known distance (the distance between 2 rangefinder lenses), you turn the focusing knob to match the images - and the knob position means distance.
You can measure the distance between 2 or more points on the map. For example, you can measure the mileage in a straight line between 2 cities. On your iPhone or iPad, open the Google Maps app.
