our @dirExclusions = qw( \.
    \/LOG(\/|$)
    \/cache(\/|$)
    \/AVCHD(\/|$)
    );
# call regex only once
our $dirExclusionsQR = join( '|', @dirExclusions );
# compile the expression
$dirExclusionsQR = qr{$dirExclusionsQR}i;

my @fileList3;
find ( {
    no_chdir => 0,
    wanted => sub {
        return unless -d;   # skip files; we're tagging folders
        return if $File::Find::name =~ $dirExclusionsQR;
        push ( @fileList3, $File::Find::name );         
        }},
    $tagLocation );