Different frameworks have different compatibility and flexibility.

1. Different frames: RF is a Quan Huafu lens and RFS is a half-frame lens.

2. Compatibility and flexibility are different: RF lens is more flexible, suitable for Quan Huafu and APSC micro-sheets, and more friendly to novices, while RFS lens is specially designed for frame micro-sheets, more compatible with Quan Huafu micro-sheets, and more suitable for professional users.