I have a little experience with the film, and it was very hard to get decent colors with conventional scanning software. There's nothing wrong with your scanner, of course. I advise you to get raw scans from VueScan and then invert them in PS using Curves or ColorNeg.
Originally Posted by bblhed
There are problems with the film after all. Or maybe just features. Color of pale sky usually shifts to cyan. There is blue cast in shadows (I must admit that sometimes it does look great). The blue cast is severe in case of underexposure, so you may try to underrate it a bit.