I've been following a biologist and photographer for a while, and it always strikes me, how visually pleasing his images are because the background always complements the subject very well.
Question 1: How are the backgrounds-colors in all of these images, so perfectly complementary to the subject-colors? Is digital manipulation involved?
Question 2: Is the unusual texture of the background natural?
Question 3: Is it possible that gels are involve in the creation of such complementary colors?
Context for Question 2: Most macro lenses peak at f2.8, I've never obtained such a beautiful and smooth background even at this aperture.
Images in question