I have the chance to get a Zeiss Planar 50/1.7 in a Contax mount, plus an adaptor to use this on four thirds cameras, at a fraction of the price of the ZD 50/2. I can live with step down metering and manual focus as I would use it for fairly controlled portrait work. It would mount on an E3 which has an adequate viewfinder. What I would like to know is this: will this top quality lens designed for film still be sharp enough when it has to resolve what a 10Mp 4/3 sensor can record? I have had a couple of Planars on my Rolleis and love them but have no experience of the Contax 35mm versions.
I have a few days to decide. Thanks in advance to anyone who has experience of this lens!