>> |
fence
!!POey2hdozCZ
i'm way too lazy to look up whether or not the canon kit lens has a focus scale, so here's a brief write-up of hyperfocus. it's an easy concept with a complicated name.
this depends on the focal length of the lens, but in most cases at apertures past, say, f/8, the depth of field actually extends "behind" infinity. think of it as wasted DOF. therefore, you can pull the focus in until the far limit of the depth of field is at infinity and the closest thing in your frame is still in acceptable focus. the hyperfocal distance is how far away that closest thing can be.
a quick example would be your kit lens. an 18mm lens at f/9 has a hyperfocal distance of 6.29 feet. if the closest thing in your frame is at least that far away, everything should be in perfect focus. if you stop down to f/16, the hyperfocal distance shrinks down to 3.56 feet, which means that everything four feet and away will be in focus.
|