Filters are magic, and I am not talking about those buttons that punch on Instaram, I am talking real glass circles that you mount on top of a lens. The folks at zippi, came up with a fun cheat sheet that explains what each one does and when is the best time to use it. See the full stack after the jump.
As we noted some filters can be applied digitally, but some of the filters can only be applied at the time of the shoot. An ND filter for example will make sure that the sensor does not get flooded with light and a CPL filter filters out light that is polarized in a certain way, both can not be achieved digitally
Click here for the full version.