Is There Any Reason to Buy a Deaselar?

Sony has had great lenses for a while on their merless bodies. A cannon is using this as an opportunity to come out with the r f line of lenses, which won for one. If you match that with the older e if you match an r f lense to an e f lens, almost unanimously, the r f lens has better opjicts and is giving better results. But i can't see none shutterless. Shutterless as the shutterless is the new merilus a.