It is easier to spot when the details become blurred. So either zoom out of the image or look at your screen from afar. Because I am shortsighted, I am also abl

It is easier to spot when the details become blurred. So either zoom out of the image or look at your screen from afar. Because I am shortsighted, I am also able to see it easily when I remove my glasses and move back somewhat from the screen. I get the best result when I am just a bit outside the range were the image is sharp. Then I still have something like a 3-D effect from the potest. -- So no substance needed to see it.