title: RMagick convert problem
body: <p>In linux i'm doing the below to convert a multipage PDF into images resized and with a high resolution:</p>
  
  <pre><code>convert -verbose -colorspace RGB -resize 800 -interlace none -density 300 -quality 80 test.pdf test.jpg
  </code></pre>
  
  <p>For the life of me, i can't seem to reproduce this EXACT command using RMagick. I tried something like this below but the image doesn't have the size/resolution i want. Any ideas?</p>
  
  <pre><code>Magick::ImageList.new('test.pdf').each_with_index { |img, i|
    img.resize_to_fit!(800, 800)
    img.write("test-#{i}.jpg") {
      self.quality = 80
      self.density = '300'
      self.colorspace = Magick::RGBColorspace
      self.interlace = Magick::NoInterlace
    }
  }
  </code></pre>
  
  <p>Cheers,
  G.</p>