For a greater reproduction scale in macro photography
The extension tubes are mounted between lens and camera and extend the distance between lens and image plane in macro photography. Because of this, the reproduction scale is increased and the depth of field is decreased. The extension tubes can be used with various lenses.
Three extension tubes 12/20/36mm for more flexibility
The set consists of three extension tubes in different sizes. They allow you to decrease the minimum focus distance of your lens in three different steps, which automatically increases the reproduction scale. They can also be combined with each other. However, that decreases the lens speed which is why the use of a tripod is strongly recommended.
Contacts for data transfer
The extension tubes are equipped with contacts for transferring the EXIF data. Exposure measurement is possible in TV and AV modes. The auto focus also works due to the contact CPU's