Maybe I'm just to dumb to understand the documentation, but this seems like it should work no? 
use Imager;
    my $pregray = Imager->new();
    $pregray->copy($original);
    my $grey = $pregray->convert(preset=>'grey');

[download]
Or am I passing in the original image wrong?

In reply to Re: Re: converting Jpeg to grayscale by Anonymous Monk
in thread converting Jpeg to grayscale by Anonymous Monk

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