Focusing is performed with the help of a very comfortable, rubberized ring which working range amounts to 250 degrees. With such parameters of the lens that value is enough to ensure you precise settings (compare that to the range of the ring featured by the Irix 2.4/15 which was just 145 degrees). Still we are surprised why a classic manual lens doesn’t have any depth of field scale. It seems the design was more important than the utility of the instrument. Pity.
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You also should remember that a significant depth of field, offered by the lens, makes the focusing easier. Even at the maximum relative aperture if you set the focus at less than 3 meters you will get a sharp image from about less than 1.5 meters to infinity. By f/5.6 you can practically forget about the focusing ring – it’s enough you move it to 1.2 meters and your images will be useful in a distance ranging from 0.6 of a meter to infinity.
