I consider the iPhone a computer with a camera more than a computer that makes phone calls. Therefore, Austin Mann’s annual iPhone camera review is my favorite of the bunch. I’ve been linking them for the past couple of years, and I find Austin’s approach always fascinating and well-presented.

This time, Austin has outdone himself. To properly test the iPhone 7 Plus’ camera with optical zoom, they’ve flown to Rwanda in collaboration with Nat Geo Travel and Nat Geo Adventure to track gorillas and take close-up pictures, timelapses, test wide-color gamut photos, and more.

He writes:

As many of you know, in the past I’ve created this review in Iceland twice, Patagonia and Switzerland, but this year I wanted to really change things up. With indicators pointing toward possibilities of optical zoom I asked myself: where’s the best place in the world to test optical zoom? Africa of course.

So this year, in collaboration with Nat Geo Travel + Nat Geo Adventure we’ve set out to get you the answers. I’m writing you from deep in the Nyungwe rain forest in southwest Rwanda… we’ve been tracking gorillas in the north, boating Lake Kivu in the west and running through tea plantations in the south… all with the iPhone 7 Plus in hand.

I’ve had a blast playing with the wide spectrum of new features and tech but as always, our mission is to find out the answer to one question:

How does all this new tech make my pictures (and videos) better than before?

The result is beautiful. The video “review” is a mini-documentary/short film about tracking down mountain gorillas, and it’s 9 minutes long. Seeing how they found the gorillas brought a big smile on my face, and you can notice how the zoom interface of the iPhone 7 Plus was useful for that purpose.

Watch it below, and go check out Austin’s photos and summary of the experience here.