A control apparatus for controlling capturing in an image capturing apparatus, comprising: display control means for causing a display unit to display a captured image, which is captured and transmitted by the image capturing apparatus and is received by the control apparatus, and an image indicating a range where image capturing is possible by the image capturing apparatus by changing the image capture direction; and determination means (201, S1004) for determining, based on a relative position of a second position in relation to a first position designated by a user operation with respect to the captured image displayed on the display unit, whether the user operation is an operation that causes zooming-in control to be executed or an operation that causes zooming-out control to be executed, wherein the display control means is configured to cause (S1005A, S1005B) the display unit to display information for indicating the zooming-out control where it is determined that the zooming-out control is to be executed or information for indicating the zooming-in control where it is determined that the zooming-in control is to be executed, while the user operation is being performed, characterized in that the display control means is configured to cause the display unit to display a box of rectangle shape or polygonal shape, a diagonal line of which being defined by the first position and the second position designated by the user operation, on the captured image displayed on the display unit, the display control means is configured to cause the display unit to display a box for indicating a current angle of view of the image currently captured by the image capturing apparatus on the image indicating the range displayed on the display unit, and the display control means is configured to cause the display unit to display a box for indicating an angle of view of the image captured by the image capturing apparatus after the zooming-out control or the zooming-in control on the image indicating the range displayed on the display unit, while the user operation is being performed. display control means for causing a display unit to display a captured image, which is captured and transmitted by the image capturing apparatus and is received by the control apparatus, and an image indicating a range where image capturing is possible by the image capturing apparatus by changing the image capture direction; and determination means (201, S1004) for determining, based on a relative position of a second position in relation to a first position designated by a user operation with respect to the captured image displayed on the display unit, whether the user operation is an operation that causes zooming-in control to be executed or an operation that causes zooming-out control to be executed, wherein the display control means is configured to cause (S1005A, S1005B) the display unit to display information for indicating the zooming-out control where it is determined that the zooming-out control is to be executed or information for indicating the zooming-in control where it is determined that the zooming-in control is to be executed, while the user operation is being performed, characterized in that the display control means is configured to cause the display unit to display a box of rectangle shape or polygonal shape, a diagonal line of which being defined by the first position and the second position designated by the user operation, on the captured image displayed on the display unit, the display control means is configured to cause the display unit to display a box for indicating a current angle of view of the image currently captured by the image capturing apparatus on the image indicating the range displayed on the display unit, and the display control means is configured to cause the display unit to display a box for indicating an angle of view of the image captured by the image capturing apparatus after the zooming-out control or the zooming-in control on the image indicating the range displayed on the display unit, while the user operation is being performed.