To be a bit more specific: I'm especially wondering what to expect in terms of cutoff frequency. (E.g.: Looking at a passive RC LPF, I know that the cutoff frequency rises once I apply a load to that LPF.)
If my tiny understanding of OpAmps is correct, the cutoff frequency is not supposed to shift (or shift as much) as I would see in a passive circuit. (Which is one of the reasons why you would want to use an active filter in the first place, I assume.)