Prismarine Shaders (1.19.1, 1.18.2) is a BSL Shaders edit. It aims to provide very nice and stunning visuals at low performance cost.

Screen Space Path Tracing / Global Illumination (disabled by default because of high performance impact).
Fancy volumetrics (clouds, fog, Nether & The End smoke).
Custom sky effects (nebulae, auroras, planar clouds, stars, moon smoke).
Integrated glowing textures.
Cinematic blur effects (depth of field, motion & distant blur, bloom).
Fancy water effects (refraction, caustics, light absorption & scattering and underwater light shafts)