The SPIE International Day of Light Photo Contest is a prestigious annual competition that aims to illuminate the profound influence of light and light-based technologies on various aspects of life. This contest, organized by SPIE, encourages both amateur and professional photographers from around the globe to capture and submit compelling images that showcase the multifaceted role of light. The 2024 theme, “The Power of Light,” invites participants to explore and highlight the transformative and awe-inspiring effects of light in our lives, communities, and the broader environment. Participants are encouraged to submit a diverse range of images that reflect various properties and applications of light. These can include artistic depictions of how light interacts with the atmosphere, nature, and materials, as well as the use of light technology such as lasers and LEDs. Additionally, photos created with advanced light technologies like telescopes and microscopes are highly encouraged. The contest also seeks images that capture human interactions with light and light technologies, emphasizing the role of light in enhancing human conditions and fostering innovation. By participating in the SPIE International Day of Light Photo Contest, photographers have the opportunity to gain international recognition and win significant cash prizes. The first-place winner will receive $2,500, while the second and third-place winners will receive $1,000 and $500, respectively. There are also special awards for technology and science images, each worth $750. Youth participants, aged 13 to 17, can compete for unique SPIE merchandise gift boxes. This contest not only celebrates the beauty and utility of light but also educates the public about the critical role light plays in science, technology, and everyday life. There is no entry fee. Eligibility: Open worldwide to participants of all ages, including both amateur and professional photographers. Prize: The contest offers several cash prizes, including a first prize of $2,500, a second prize of $1,000, and a third prize of $500. Additionally, there are technology and science-specific prizes worth $750. There are also special awards for youth participants aged 13 to 17, who will receive a surprise gift box of SPIE merchandise. Winners will be notified on 16 October 2024, and the official announcement will be made on 30 October 2024.