  The total magnification due to a point lens has been of particular interest
as the theorem that gravitational lensing results in light amplification for
all observers appears to contradict the conservation of photon number. This has
been discussed several times, and various resolutions have been offered. In
this note, we use a kinematic approach to provide a formula for the
magnification factor for the primary image accurate to first order and valid
for rays leaving the source at any trajectory. We thus determine the
magnification over a sphere surrounding the system. A new result found is that
while the magnification dips below unity far from the optical axis as noted by
others, it returns to unity directly behind the source.
