1、聚焦法
... focusingscreen调焦屏 focussing聚焦法，对光 focussingglass调焦屏，毛玻璃板 ...
2、聚焦
... focussingfield聚焦场 focussing聚焦 fodder临时堵漏的防水软垫饲料 ...
3、对光
...focusing screen 调焦屏focussing 聚焦法，对光focussing glass 调焦屏，毛玻璃板 ...
4、调焦
... 焦点 focus 调焦 focussing 调焦环；对焦环 focussing ring ...