Method for indicating free space size of storage medium

摘要

In a digital output service of photographs, smooth operation of an additional recording service is aimed at by letting a user or an operator of a service provider easily understand the number of photographs addable to a storage medium. The free space size of a storage medium is detected each time new or additional recording therein is completed, and information regarding the free space size is indicated to a customer by being recorded on a recording medium corresponding to the storage medium, such as index print for the storage medium. On this occasion, the free space size is indicated as the number of films or exposures such as "6 25-exposure films" (6 (25 Exp)) or "160 exposures" (160) so that a user who is not familiar with expressions in bytes can readily understand it.