Image & fileproblem downloading from webserver

Hi There,

Somehow images and files get corrupted when i read them with a perl 
script and then download them with a modperl script using File::Read or 
File::Slurp. The images are not really broken but they get blurred and 
dont look the same like before they are uploaded. When i download them 
directly from the webserver directory where the files are stored are 
stored they are ok.

I have also tried the script below but no success.

<-->

     print $args->{base}->{CGI}->header( -type => $mimetype, -attachment 
=> $document );

     my $fname = $file;

     open my $in, q{<}, $fname or die qq{Could not open file <$fname>: $!};
     binmode($in);

     open my $out, q{>&STDOUT} or die qq{Cant dup STDOUT: $!};
     binmode($out);
     $out->autoflush(1);

     my ($more, $buf);
     do{
         $more = read $in, $buf, 4096;
         print $out $buf;
     } while $more;

     close $out or die $!;
     close $in  or die $!;

<-->

Any hints that can help me out....?

Thanx in advance!

Michel