This Dorr Extension Tube Kit for Fujifilm X mount includes 10, 16 and 21mm tubes for perfect close-up and macro shots. The rings can be be used individually or in combination with each other then are placed between the camera and the lens. The minimum focusing distance is thus reduced and the magnification is extended. Also available in other fittings.
By putting distance between the camera body and lens, the focal length of the lens is shortened, which means shots can be taken much closer to the subject and magnified to keep detail. The extension rings can be used in any combination to get the correct effect and the electrionic function is maintained by the contacts on the bottom of the extension tubes.