I have been using my new blend of Low Titanium dioxide Mineral powder foundation that I made up a few days ago. It's coverage is not as high as I usually like, but with the addition of concealer and colour correctors it still manages to do a fairly good job of covering spots and blemishes, and I do need to to and extra layer of it to get a great flawless look. I really didn't expect it to cover as well as a blend with higher Titanium Dioxide levels does, so I'm not disappointed about the coverage.
I've taken a few photos to see if the white flash cast is reduced by lowering the Titanium levels and on my skin, it doesn't appear to have made that much of a difference.... but I'll keep taking more pictures while wearing it and see if it really does make a difference or not. If not I'll attempt a foundation with higher Titanium levels while lowering the zinc oxide levels and see what happens : D