Diffusion, bloom and halation arrive in the Effects panel, applied globally or through masks – but not in Lightroom.
Adobe Camera RAW now has a new "glow" slider that mimics the diffusion of retro film lenses ...
A camera lens filter is pretty much what you’d expect: it’s a physical piece of glass that attaches to your camera’s lens, filters the light before it reaches the sensor and, typically, has an effect ...