Reflections off windows are a photography problem traditionally tackled by using circular polarizing filters, but software giant Adobe will soon launch a tool to tackle the issue in post.

So he put the polarizing filter back on and rotated it slowly until he got rid of the reflection and could actually see the dummy. Amazing that he could get all that interference to disappear.

The cyan filter absorbs the red light, but allows the green light to pass through. Diffuse reflection from surfaces can also subtract colours from light. White surfaces reflect all colours of ...