I've shot some tests with the Sony F350 and must say that while the overcranking is smooth there is a definitely noticeable drop in resolution (as expected really). I assume that the camera is just doing a straightforward de-interlace as you would do in post - is this correct? If so, apart from saving time, would it be just as good to do it in post (maybe even better if there are programs with better algorythms than the camera's one)? In this way, would it then be just as good to have the cheaper F335, one of the main feature benefits of the F355 being over and undercranking.
Steve

Steve,

This post should give you the info you need:
http://www.dvinfo.net/conf/showthread.php?t=64638