I'm not sure where they're from. While the Sisko photo was used as a TV Guide cover, the Jadzia one in this months edition shows the same background if you look carefully. Now it's quite possible that she was included in the TV Guide season 7 finale cover shoot, but got dropped for an actual cover. But it's also possible that this was an alternate set of PB photos that, for everyone minus Sisko, they re-staged in a group setting. I'm just not sure. Unless I get to talk to a photographer or producer, I doubt I'll ever find out, lol.