You don't have to fetch all the rows.

$sth->execute($id);
my $row = $sth->fetch();
$sth->finish();
if ($row) {
   ...
} else {
   # No more images
   ...
}
[download]

The selectrow_* methods are convenient shortcuts when you expect at most one row. Any extra rows returned by the query are ignored.

my $row = selectrow_arrayref($stmt_or_sth, undef, $id);
if ($row) {
   ...
} else {
   # No more images
   ...
}
[download]

Note: I assumed RaiseError was true.