EF/FX Adapter AF Demo Videos EF 35 F/1.4L I on X-E3 NOTE: AF-C can be used to improve the accuracy of focus locking. EF 40 F2.8 STM on X-E3 EF 85 F/1.4 L IS on X-E3 EF 70-200 F/4.0 on X-E3 Sigma 135 F/1.8 ART on X-E3