Kipon Canon EF lens adapter for Micro Four Thirds shows insanely impressive AF performance In: Cameras Posted May 12, 2015 This is definitely a very interesting adapter. I love my Metabones Speedbooster on the GH4 for the increased field of view and the Image Stabilisation which is great on lenses like the 100mm f2.8 L lens. In camera electronic aperture control is also nice. The statement from Kipon doesn't mention any of these features, instead opting for the autofocus headline (which is amazing that they've pulled it off alone), but this was at the bottom of my request list anyway. I presume it will have aperture control as the adapter doesn't show a manual aperture dial. I hope it has IS, and the price is interestingly affordable compared to the Metabones Speedbooster. Kipon do produce optical adapters so it will be interesting if they can pull of a Speedbooster type of adapter with FULL EF lens functionality before Metabones... Or am I jumping ahead there ?