HanneSThEGreaT, that is a very clever program. Thank you! I'm trying to adapt something like that in my program; however, I'm having trouble. I have one PictureBox containing an image like your Picture1, but I need that full image & PictureBox to zoom in or out rather than having a second PictureBox that shows the zoom (Picture3 in your program). I can move Mouse events into my Zoom Button click functions, but my problem is adapting to using only one PictureBox. Any guidance in the right direction is much appreciated.