Does anyone have the map that this screenshot was taken on, or know how to make an effect like this? Bungie.net : Halo 3 File Details
well, i think the map is Avalanche. Looks pretty easy, set up a shield wall, Add some Camo, wait till there almost depleted, and take the shot.
The map's Rat's Nest, it's in the description. There's a room behind default Camo Spawn that is like the Black Room in Snowbound, only better. You need to Turret Glitch into it, go into the right section, and throw down a Flare. It produces that effect. Just a PROTip: Screenshots can benefit from effects, but it's the ones without effects that are more impressive.