The ExpoDisc 2.0 hasn't changed the way it filters the light since the original version, but offers a number of other features and a lower price. Now, the ExpoDisc uses spring mounts to firmly attach to your lens, which also means that it can be mounted in front of other filters that are already on your lens. The ExpoDisc 2.0 also comes with warming gels, which modify the white balance to produce warmer hues that work well with portrait photography.