today's announcement was a step along the way... but while film is sensitive to individual photons, gravity is wildly different. The analog to a photon ( that carries electromagnetic force ) is, hypothetically,
the graviton. According to that article, a perfect detector with the mass of Jupiter, put into close orbit around a neutron star, would be expected to detect one gravton every 10 years due to the low interaction with matter. So if you think your IR film with a deep IR filter is slow, you ain't seen nothing yet. Be prepared to wait billions of years to form your gravity camera picture. Now, a
gravity wave camera, well, the beginnings of that are already in progress. Cool video about today's announcement and future plans
is here