The parameters of the final image formed by a lens system are affected by several factors, including the focal length of the lens, the distance between the object and the lens (object distance), and the distance between the lens and the image (image distance).
The focal length of a lens determines how much the light rays are bent as they pass through the lens, which in turn affects the magnification and the size of the final image. A longer focal length results in a larger image, while a shorter focal length results in a smaller image.
The object distance and the image distance are inversely related in a lens system. This means that as the object distance increases, the image distance decreases and vice versa. This relationship is described by the lens formula: 1/f = 1/o + 1/i, where f is the focal length, o is the object distance, and i is the image distance.
No, the final image can only be formed at a specific distance from the lens, known as the focal point. This is where the light rays converge after passing through the lens and where the image is formed. If the object is placed closer or further than the focal point, the image will be blurry.
The aperture of a lens, which refers to the size and shape of the opening that allows light to pass through, affects the amount of light that enters the lens. A larger aperture allows more light to enter, resulting in a brighter image, while a smaller aperture results in a darker image. The shape of the aperture can also affect the shape of the bokeh (blurry background) in the final image.