Those sand like textures reflect tiny bit of colors so that's why it's called prism effect. Most anti-glare screen protectors have this effect and I can actually see it in the picture you posted. It's kinda hard to measure how much in that picture but PS does have a little bit of that, too, but, it's very minimum and I never notice it unless I think about it. A lot of past reviews and comparisons universally concluded that the (prism) texture is minimum on the PS AG so that's why I went with it. However, I've never seen a direct comparison between the SM and the PS side by side so I'm definitely curious about the difference in both.