"ef" -
key terms from Wikipedia
ago
ef
it
had
n
all
ef
lenses
canon
ef
canon
ef
lens
mount
canon
ef
lenses
ef
ef
is
used
ef
lens
mount
ef
lenses
ef
mount
ef
scale
ef
series
ef
traffic
es
to
get
an
ef
ford
ef
falcon
found
on
most
ef
lenses
jem
ef
junkers
ef
married
forty
year
ago
ef
super
telephoto
ef
lenses