Question

short note on extension by magnification​

Answer 1

Explanation:

An extension tube increases lens magnification by an amount equal to the extension distance divided by the lens focal length. For example, adding a 25 mm extension tube to a 50 mm lens will give a magnification gain of 0.5X. ... Try experimenting with different lenses to see how extension affects magnification.

Answer 2

Answer:

An extension tube increases lens magnification by an amount equal to the extension distance divided by the lens focal length. For example, adding a 25 mm extension tube to a 50 mm lens will give a magnification gain of 0.5X. ... Try experimenting with different lenses to see how extension affects magnification.