Apple has added basic color and effect filters to both the Camera and Photos app on the iPhone. The new filters apply to the still and square cameras. They don't apply to the video or panorama cameras. If you apply one, they're live and you'll see them in the preview the way they'll look when the photo is taken. They're subtle, as filters go. Mono, Tonal, Noir, Fade, Chrome, Process, Transfer, and Instant. There are three types of black and white, one desaturated, one over saturated, and and one each that tint towards blue, red, and green. Nothing blown out, nothing vignetted, and nothing overly dramatic. Best of all, they're easy to use!