Image Size Testing – Click the images to see how they fit a 1920×1080 screen
1500 x 700 Image Size
Non-full screen – Good. This size works good for both the 1500 pixel width and the 700 pixel height. There is a small black border around the image. (window with task bar on bottom and not using small icons; using Firefox with menu bar, tabs, and navigation bar).
Full screen (f11) – Not so good (but okay). The image stays the same size (leaves a larger black border around the image).
1920 x 1080 Image Size
Full screen (f11) – Good. The image fills the entire screen.
Non-full screen – Not good. The image is reduced in size to fit the screen height. The 1080 pixel height is higher than the screen height. So, the image is resized to fill the screen top-to-bottom and therefore the width is also reduced (window with task bar on bottom and not using small icons; using Firefox with menu bar, tabs, and navigation bar) .