World texture - how to map single image [not mirrored]?

[DNorman]

Not sure if it is exactly what you mean but take a look at this (I could not download your file):

World settings, how to get same settings as earlier versions of Blender

I am not familiar with the method you used in 2.79 but things have changed a bit since then. The environment texture node is intended for using hdri equirectangular images and mirror ball images, it will distort and blow out a normal photograph. You can download lots of free hdri images from https://polyhaven.com/hdris . Hdri images are one of the best options as they are 360º images that “en-globe your scene” also they do a good job at lighting the scene and will give you nice reflections. If…

To make the image single set the image node to clip and single image.