Hot answers tagged optics
It is really rather simple. The diopter value will tell you how close you must be to the subject of your photograph, the farthest distance you can get a sharp image with the close-up lens on. you divide one metre by the diopter value to get the distance, which is the focal distance of the close-up lens. Hence a +1 lens will give a far distance of 1 m and ...
Only top voted, non community-wiki answers of a minimum length are eligible