What is the significance of "mm" in a camera lens and how does it affect the quality of the photographs taken?
The "mm" in a camera lens refers to the focal length, which affects the field of view and magnification of the image. A higher mm number means a longer focal length, resulting in a narrower field of view and greater magnification. This can impact the quality of photographs by influencing the perspective, depth of field, and overall sharpness of the image.