SM Shaders, also known as Seamatis' Vibrant Shaders, by Seamatis is relatively new, just being releases in early 2016. It is compatible with the latest version of Minecraft.
It changes Minecraft graphics in a few ways. Besides adding dynamic shadows which waver and move along with the sun which creates them, this shader pack also adds waving terrain, so you can look forward to watching wide fields of grass and tree leaves wiggling and shaking while you walk by.
DIRECT COMPARISON BETWEEN VANILLA MINECRAFT AND SM SHADERS
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While other shader packs bring weird colors, constant movement and other oddities into the game, this one is actually pretty tame and believable in comparison. For a more astonishing experience, you’ll probably want to find a different pack than this one.
The colors and lighting don’t seem to be too bright or too dark, which puts them right in the middle range where most players expect them to be.