Ron do want to ask you as your very involved here . Are you a bit surprised how it is running on this A7r II body or something you expected. I have future thoughts which I have not mentioned. There certainly is another Sony camera going to hit the market soon and I kind of planned on this lens hopefully even working better on it. I try and think ahead although with Sony they are a bit wild in some decisions. Just not sure what they are doing next the price of the RXr1 II going up 600 dollars overnight spells get rid of this sensor we have another in production and new body. From everything I have read this lens in the corners was not even good at F4 on older bodies and yet it does look pretty acceptable on this body. Sure 6.3 is the optimum but from what I read folks where say even F11
