Hello, I am looking for a lens to take into the jungle with me for photos of frogs and small snakes as well As larger bugs. When I went the first time I took an 85mm (friends) on a full frame which obviously leaves a circle on the photo. I was hoping to find a lens I could get close for quality of photo since a lot of shots are at night but I can still fit the body of the subject. Any ideas. I'll post a few example of shots I want to redo with a better lens.