i was talking to a friend the other day about that string stabilizer, and the conversation evolved into a tele-converter "looking" piece that houses a stabilizer. it could possibly be fabricated to be thinner than a 1.4tc, as no elements would be necessary. this would also mean there would be little to no IQ degradation and no loss of F stop(s). anyone thought of this yet? i highly doubt any camera or (third-party) lens manufacturers would produce such a thing - it would probably cause huge profit loss.