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Measure dimensions with iPhone. 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.
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).
In addition, call the distance between the camera and the two points $L$. The camera's field of view ($FOV$) (or angle of view as is more common in photography) can be calculated by $$ FOV = 2\arctan\left(\frac{d}{2F}\right) $$
16 lip 2016 · To solve this problem we may use two or more images to measure the distance. 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.
Mastering your iPhone 11 camera settings can profoundly improve the quality of your photographs. From portraits to landscape shots, this guide will teach you how to take advantage of your device’s powerful features.
17 wrz 2018 · How to Measure Distances With Your iPhone. Your iPhone now contains a "Measure" app that acts as a high-tech tape measure. Just launch the app, point your camera at something, and it will measure dimensions of objects in the real world. This is one of the many new features in the iOS 12 update.
4 lis 2019 · How to Switch Focal Lengths in Portrait Mode on iPhone 11 Pro and iPhone 11 Pro Max; How to Use Camera Filters on iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max
