FAQ

What is the Focal Length 1?
Focal Length 1 is the distance between the center of a lens and its focal point, which is the point where parallel light rays converge, used to calculate the magnification of an object. Focal Length 1 is usually measured using the Meter for Length. Note that the value of Focal Length 1 is always negative.
Can the Focal Length 1 be negative?
Yes, the Focal Length 1, measured in Length can be negative.
What unit is used to measure Focal Length 1?
Focal Length 1 is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Focal Length 1 can be measured.
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