The discussion revolves around a photo contest themed around sunrise and sunset, emphasizing the submission of original digital photos taken during these times. Participants are required to adhere to specific rules, including size limitations for images, the prohibition of heavy editing, and the necessity of posting only one picture per member. The conversation includes members sharing their sunset photos, discussing their experiences with photography, and expressing admiration for each other's work. There are also inquiries about technical aspects of photo submission, such as resizing images and using photo hosting sites. The competitive spirit is evident as members anticipate the quality of submissions, with some expressing concerns about their own photography skills compared to others. Overall, the thread fosters a sense of community among photography enthusiasts while focusing on the beauty of sunrises and sunsets.