拍摄风光等场景类的题材往往需要全景深效果,不过有时即使采用广角镜头和最小光圈拍摄都无法实现全景深,而用中焦和长焦镜头拍摄时景深就更小了。更糟的是,采用小光圈拍摄还会增加衍射的影响,从而降低图像的反差和细节再现能力,对图像素质要求较高的摄影师通常都会避免采用较小的光圈拍摄。 Scenery such as shooting scenery often require deep panoramic scene effects, but sometimes even with the wide-angle lens and the smallest aperture can not be achieved panoramic depth of field, but with the focus and telephoto lens when shooting depth of field is even smaller. Even worse, the use of small aperture shooting will increase the diffraction effect, thereby reducing the image contrast and detail reproduction capabilities, the higher the quality of the photographer usually require a smaller aperture to avoid shooting.