1. A method for zooming in an image that is being presented on a display device connected to a storage unit, wherein said presentation image is loaded to the display device from said storage unit and said presentation image comprises at least one preselected, zoomable area, said method comprising the steps of: continuously zooming ( 26 ) in on the preselected area in the presentation image, during the step of continuous zooming, loading ( 28 ) a detail image information data set to the display device from the storage unit, wherein said detail image information data set is used for presenting the preselected area in higher resolution than in the presentation image, and improving ( 30 ) the resolution of the zoomed-in-on, preselected area in the presentation image on the display device by means of the loaded detail image information data set when the zooming in on the preselected area in the presentation image is complete.