It's very hard to tell what to suggest from this scan - the overall image feels muddy, especially in the highlights, which would imply either that you're over-exposing the print as a whole, burning down the highlights too much, your negative has issues or your scanner settings are off, none of which can be eliminated from this scan. Also, the main subject is not sharply detailed the way I'd expect it to be between the Oly lens and the Delta 100 film. Is this a scan from a print or the negative?