If you have a supply of stickers ready you can do the same as these blinds. But sliding covers are better and more convenient. The sliding door makes it easy to close view access, the strength of the stick is dependable, and no sticky part ever touches the lens, unlike the rest of the sticky note slapping the lens. So it really comes down to price. If you can get them for less than $1 each, it's worth it! A NOTICE. These caps are for single lens systems.
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