초록 ▼

An automatic focusing apparatus repetitively detects a defocus amount of a photographing lens, discriminates whether or not an object is moving, and calculates a pursuit correction amount for a moving object on the basis of present and previous defocus amounts. When a non-moving object is discrimina

An automatic focusing apparatus repetitively detects a defocus amount of a photographing lens, discriminates whether or not an object is moving, and calculates a pursuit correction amount for a moving object on the basis of present and previous defocus amounts. When a non-moving object is discriminated, a drive amount of the lens is calculated on the basis of the present defocus amount, and when a moving object is discriminated the drive amount is calculated on the basis of a pursuit drive amount as a sum of the present defocus amount and the pursuit correction amount. A pursuit enable/disable determining device determines whether the drive amount is calculated on the basis of the discrimination result or on the basis of the present defocus amount. When a drive direction of the lens is reversed, the pursuit enable/disable determining device causes calculation of the drive amount of the photographing lens on the basis of the present defocus amount for driving the lens in a predetermined number of drive operations after the reversal.

대표청구항 ▼

A camera having an autofocusing mechanism, comprising: focus detecting means for repeatedly detecting a focusing state of an objective lens with respect to a photographic object and outputting a focus adjustment signal; object detecting means for detecting movement of the object to be photographed i

A camera having an autofocusing mechanism, comprising: focus detecting means for repeatedly detecting a focusing state of an objective lens with respect to a photographic object and outputting a focus adjustment signal; object detecting means for detecting movement of the object to be photographed in accordance with a plurality of said focus adjustment signals and outputting a movement signal; lens drive amount determining means for determining an amount of lens drive in accordance with said movement signal; signal generating means for generating a signal indicative of a characteristic value of said objective lens; compensating means for producing an amount of compensation in accordance with said characteristic value, and compensating the amount of lens drive based on said amount of compensation; and lens drive means for driving said objective lens based on the amount of lens drive as compensated.