In this episode, it's a daunting prospect for the amateur photographers who will photograph a portrait of actor Vince Colosimo, businessman and philanthropist Dick Smith and performer Christa Hughes.
Competing for the best portrait photo is mother of two Nicole Wells, actor Jonny Nicolaidis and student Isobel Dunworth Markus.
Gary Heery is the guest judge and arguably Australia's most successful portrait photographer who counts Madonna, Andy Warhol and Roy Orbison amongst his subjects. His advice is "don't be afraid of them just because they are famous".