a fraction of a second apart

In this sentence:

That's why Casio digital cameras, in self-timer mode, automatically shoot three consecutive snaps, a fraction of a second apart. You've just tripled your odds of getting one decent shot.

what "a fraction of a second apart" may mean?

Three snaps in one second?
or
Three snaps with delay of one second?

It means that three pictures are taken, with only a very small part of a second (typically f.ex. 40 milliseconds) between them.
So yes, within that one second, three pictures are taken. :)

Three snaps with the delay of a second would be: "....automatically shoot three consecutive snaps, a second apart."

:)
BY

Thank's a lot.

no problem черный папачка.