An image transmitting apparatus receives a first reading condition relating to an image from an external apparatus via a network. The image transmitting apparatus compares the first reading condition with a pre-set second reading condition, if the two conditions are different, decides one of the first reading condition and the second reading condition as a reading condition when selecting an image data to be transmitted to the external device. The image transmitting apparatus selects an image data that matches with the reading condition, and sends the selected image data to the external apparatus.