The discussion revolves around astrophotography using an 85mm lens on a static tripod to capture the Milky Way, with participants sharing their experiences and technical insights. There is a debate about the definition of a "normal" lens, with some asserting that an 85mm lens is considered normal for medium format cameras, while others argue it is a short telephoto for full-frame DSLRs. The importance of using high-quality lenses for astrophotography is emphasized, as they provide better optical performance and image quality. Recommendations for camera systems and lenses are shared, highlighting the benefits of full-frame sensors for low-light performance and dynamic range. The conversation underscores the technical nuances of astrophotography and the gear needed for optimal results.