It's a real balance with group tours as there are lots of different interests among the groups. For our wildlife tours we have fantastic wildlife guides who help everyone get the best from the tour. I'd recommend chatting to your tour leader and guides on tour to let them know what especially interests you - they then use that info to make sure everyone in the group has a brilliant experience. Our guides are wonderful for adjusting the pace of the tour for the group, especially if you want to get that money shot!
We don't have any photography specific tours on sale now, however we do encourage groups of friends with the same interest to book a departure together which could work for a photography specific departure.