MTF Services Ltd MTF EFFECT Canon EF to E Mount Lens Adapter

The MTF Services Ltd. MTF EFFECT Canon EF to E Mount Lens Adapter is a complement to a separately-sold Canon EF Control Unit developed by MTF. Both the adapter and the Control Unit are a pioneering result of a long time of research and discovery. Together they let you control the aperture of a Canon EF-mount lens on a non-Canon, non-EF camera. They moreover let you open up aperture at much more accurate f-stop increments of 1/8, whereas even on Canon cameras aperture opens in increments of 1/3 only. Furthermore, both of the above factors are achievable even on EF lenses that have image stabilization. All of this has never been possible before, and it allows you to use your Canon lenses without aperture restrictions on non-Canon, non-EF cameras.