Why are some backgrounds not available for certain resolutions?
Some backgrounds aren’t available for larger screen resolutions simply because the original imagery from which they are derived is not large enough. If a low resolution background is applied to a screen that is at a high resolution, the results vary. More often than not though, the image is stretched and becomes pixilated, which usually isn’t a pretty sight. Other backgrounds aren’t available because the original imagery’s aspect ratio is vastly different. Cropping the image isn’t always possible because there may not be enough detail to fill the desired resolution. Cropping the image to fit a certain aspect ratio may also cut out important details in the picture.
