Story summary.Two arrogant "Sagittarian" invaders, Qvord & Eenif, have finally discovered Earth, & want it. So they plan to soften up the inhabitants for slavery, before masters arrive in hordes.
Near the end of the week long softening, they'll finally face the horror...
- Title refers to a camera lens, employed as a weapon by humans.
Fact sheet.First published: Astounding, March 1949.
Among the stories edited by John Campbell for Astounding/Analog.
Related: Stories of Eric Frank Russell (annotated list).