1. A method of displaying a participant during a video conference against a blurred or otherwise unclear background, comprising: using an imaging device including an optic, an image sensor and a processor; determining different distances of two or more objects in a scene being captured in video, including: performing an auto-focus sweep of the scene; determining a sharpest of two or more color channels, including calculating the sharpest of at least two of three colors: sharpest = { j | σ j AV j = max ⁢ { σ r AV r ; σ g AV g ; σ b AV b } } where AVi comprise averages of pixels for at least two of three specific color channels {j|r, g, b}; and determining at least two relative distances based on the determining of the sharpest of the two or more color channels; generating a depth map of the scene based on the auto-focus sweep; and identifying at least one of the objects as a foreground object or a background object, or one or more of each, based on the determining of the different distances.