Directly compatible with E-System cameras. Compatible with Micro Four Thirds digital cameras (PEN\OM-D) through use of the MMF-2 or MMF-3 (Four Thirds Lens Adapter to Micro Four Thirds Lens Adapter). The MMF-3 is dust and splash proof for use with that type of lens on a dust and splash proof body. Note, AF performance may diminish as compared to being on an E-System body.