It's not uncommon for photographers to feel much more at ease behind the camera rather than in front of it. Duo, a concept from Chin-Wei Liao, a Korean design school graduate, aims to transform the person behind the lens into photographer and subject simultaneously. Each half of the Duo is an individual camera. Assembled as one unit, pressing the shutter will record and an image while capturing a picture of the person using the camera. Click through to read more about this modular camera system.