A capsule contains beverage ingredients such as ground coffee, tea or other ingredients and is configured for insertion in a beverage production device in order to have a liquid under pressure have enter the capsule and to interact with the ingredients in the capsule. When the deviation of the timing becomes larger, a malfunction is caused to occur, and an operation margin becomes smaller with respect to the variations of the element characteristics. The mounting apparatus includes a bracket and a locking member pivotably mounted to the chassis. The calculator calculates a first feature quantity of the value of the first pixel relating to a difference between the value of the first pixel and the values of the peripheral pixels.