Picking a good tour operator is important. Ngorongoro crater is pretty open, so its easier to see safari vehicles conglomerate together. But if you're in the other parks, an experienced safari driver is highly recommended. Within 3 hours of one park, by God's grace (and we attribute this to prayer!), we say 2 sets of lions eating zebra, wiildebeast, and saw a lionness kill another wildebeast! We met a group that evening that didn't see any lions! We highly recommend Kilidove Tours. His team is not only highly knowledgeable (and they teach you their wisdom!), the owner grew up as an orphan and supports 4 - 5 orphans in their schooling! So you're not only getting the best tour company, but supporting a great organization. Its important, and you'll see this, that the operator understands the animals habits and how to maximize your photography experience.