Sighting is one thing, video photography is another. I managed to get some footage of six species, especially those that seem to have no fear. This footage is shown here but is better seen by pressing the view in YouTube option:
† I cannot recommend the Grants' book more strongly. It is clear they succeeded in achieving the goal they set out in the preface: Our goal, like [David] Lack's, was to capture the essentials and the highlights for an intended audience of students. Grant, P.R. & Grant, B.R. 2008. How and Why Species Multiply. The Radiation of Darwin's Finches. Princeton and Oxford: Princeton University Press.