Has anyone here ever used one of the Rollei 1.5x converter lens sets that bayonet on to a standard Rolleiflex, and how does it compare to a Tele Rolleiflex? I would assume it is not as good image-quality wise as a regular Tele-Rolleiflex, but what is the minimum focus (I know the Tele's have a rather abysmal close-focus without the Rolleinars). Is it close enough quality-wise to be worth it, or would you be better off saving the extra pennies required to get a Tele with a set of Rolleinars?