Annie, Here's how I do it. I like the tight fitting caps. I pull it off and "hover" in front of the lens billionths of a millimeter away but no longer touching, and when the camera quits shaking I move it out of the way for the exposure. Shake all you want when you put it back on. Never had a blur or a ghost or a problem doing it that way. And I do that a lot! G'luck. jg