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Why is a telephoto lens considered to have a longer focal length than that of single convex lens?
A telephoto lens is designed to have a longer focal length compared to a single convex lens due to its unique optical construction, which includes multiple lens elements that compress the light path. This design allows for greater magnification and a narrower field of view, making telephoto lenses ideal for capturing distant subjects. The combination of these elements results in a focal length that significantly exceeds that of standard convex lenses, enabling photographers to achieve high-quality images from afar.
PREREQUISITESPhotographers, optical engineers, and anyone interested in understanding lens technology and its applications in capturing images.
copitlory8 said:Why is a telephoto lens considered to have a longer focal length than that of single convex lens?