Canon EF-12 II Extension Tube

Description The 12mm EF 12 II is commonly paired with wide-angle lenses, while the longer EF 25 II is generally better suited to normal or telephoto lenses. Auto exposure continues to operate reliably, although manual focus is recommended in most situations. The Version II extension tubes are also compatible with the EF-S 18-55mm f/3.5-5.6.