近日，佳能公司正式公布了多款新的镜头专利，其中包含适用于体育、野生动物摄影等领域的高性能长焦镜头：Canon 200-600mm f/5-6.5、Canon 125-500mm f/5-6.5以及Canon 200-700mm ...

Canon is developing lenses in the following focal lengths: RF 400mm f/4.0, RF 500mm f/5.6, RF 600mm f/5.6, RF 600mm f/6.3, and RF 800mm f/6.3. The design is focused on creating lightweight yet ...