Look into the camera's viewfinder and frame the image.
看相机的取景器构图。
2
One of the defining features of an SLR camera is that you frame the picture by looking through the same lens that takes the picture (by looking through the viewfinder).
SLR相机的特征之一就是使用者通过查看抓取图像的镜头来构图(也就是依靠取景器)。
3
Simply hold the camera directly overhead while looking through the viewfinder. Frame the page as much as possible while keeping the horizontal and vertical edges as straight as possible.