Light-sensing mechanisms are widespread throughout nature, impacting lifecycles in all kingdoms of life. Understanding how different photoreceptor systems function to orchestrate numerous biological processes ranging from mammalian vision to plant growth to bacterial pathogenicity requires the integration of a diverse range of methodologies, masteries and disciplines. Uniting these approaches has been instrumental in developing new optically based technologies for dissecting neural networks and behavioral disorders, restoring vision, controlling cellular pathways at unprecedented spatial-temporal resolution, and engineering gene circuits for biotechnology applications. We anticipate that the scientific discussions, research presentations and informal interactions among the diverse audiences of this GRC and associated GRS will advance our understanding of the mechanisms and biological functions of naturally occurring photoreceptor systems from microbes to man. The scientific exchange between basic and applied research will also lead to further development of engineered photosystems for clinical and biotechnological applications. Combined with the GRS, this integrative format will ensure networking and mentoring of junior researchers and foster their involvement in carrying the field into the future. Space is reserved within the GRC program for talks from junior researchers, selected from submitted abstracts, to present breakthrough findings. A limited number of bursary funds are available to offset registration costs for students and postdocs. We encourage all qualified and interested junior scientists to apply, regardless of gender, race, or age. Limited funds are also available to support attendees requiring child-care assistance. If costs are a hindrance please make an informal enquiry with the Chairs after application and/or registration.