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walter1998
- 11
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Hello guys, I was wondering if you could guess or even calculate the diameter of a camera lens with a picture of a ruler.
This question is asked in a famous competition in my country: "Approximately calculate the diameter of the lens which this picture is taken with.(for measurements consider lens as a flat object)mfb said:Not in any realistic way. An ideal camera will make the same picture independent of the size of the lens, and real cameras are quite close to that (and for the tiny deviations, you have no idea which part of the camera lead to them).
To calculate the camera lens diameter using a ruler, you will need to measure the distance between the center of the lens and the edge of the lens using a ruler. Then, divide this measurement by the magnification of the lens. The result is the diameter of the lens in millimeters.
The magnification of a camera lens refers to how much the lens can zoom in or out. It is typically measured in terms of a ratio, such as 1:2, which means that the lens can zoom in twice as much as it can zoom out.
Yes, you can use any ruler as long as it has accurate markings and is long enough to measure the distance between the center and edge of the lens. A ruler with millimeter markings is recommended for more precise measurements.
Knowing the lens diameter is important for various reasons. It can help you determine the compatibility of lenses with different cameras, make accurate calculations for magnification and field of view, and ensure proper fitting of lens filters and accessories.
Yes, there are many online tools available that can help you calculate the lens diameter using a ruler. Simply input the measurements and magnification, and the tool will provide you with the diameter in millimeters. However, it is always recommended to double-check the calculations for accuracy.