for me, during LE i usually meter dun sa area na tingin ko ok yung lighting or dun sa area na focused. then i do a series of exposures, from -3, 0, +3. i check the shots. pag tingin ko meron nakong keeper shot dun ok na, pag hindi paglalaruan ko yung exposures (-2 -1 and so on). trial and error ako kumbaga. worked well for me kasi at least i have shots na pwede kong gawing hdr or single shot na ok yung exposure. steady na yung F ko (either 8 o 11 lang naman ako) at ung iso (lowest) tapos sa shutterspeed lang ako nagaadjust.