Because the optical viewfinder is small and recessed into the camera body, it can often be tricky to clean properly.
因为光学取景器较小，并且凹进相机里面，所以合适的清洁方法经常是需要窍门的。
Because the optical viewfinder is small and recessed into the camera body, it can often be tricky to clean properly.
因为光学取景器较小，并且凹进相机里面，所以合适的清洁方法经常是需要窍门的。
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