出于工作及业余嗜好,笔者时常要翻拍一些文献资料、图片、旧标识、微型实物器皿等,同时也非常喜欢拍摄花卉、昆虫、静物等微距照片。以往拍摄时均采用加近摄镜或近摄接圈的方法。但此两种方法的缺点也是显而易见的:近摄镜倍率不够大,且像场弯曲和畸变较大,不能真实地反映物体和原貌,影像边缘清晰度较差;近摄接圈通光量不足,像质有所下降,况且由于景 Out of work and amateur hobbies, I often have to remake some of the literature, pictures, old logos, miniature objects, and so on, but also like macro shots such as flowers, insects, still life. In the past when shooting with close-up or close-up approach. However, the shortcomings of these two methods are also obvious: the rate of the close-up lens is not big enough, and the image field is greatly distorted and distorted, which can not truly reflect the object and the original appearance, and the edge of the image has poor sharpness; Image quality has declined, Moreover, due to King