Here is another shot taken with the Zeiss 135mm 2,0 and Polaroid 250D + Canon 500D. Next step is to isolate the background more.
There are two ways to do this:
1. Use a wider aperture, but then your depth of field on the subject gets too narrow.
2. Use a longer focal length. This narrows the angle of view so you get less of the background in, and what is in the frame is blurred more.
The Zeiss 135mm with a closeup filter will have a combined focal length nearer 100mm. You could try using an extension tube if you need to focus closer than the lens allows. This will reduce the focus distance without reducing the focal length.
Another option is to buy one of the longer macro lenses, such as the AFD 200/4 micro, or Tamron 180/3.5. These have internal focusing (IF) so the focal length reduces at close range, so it might not end up being much of an improvement over your Zeiss 135. Might be worth exploring. Or try an AFS 300/4 with extension tube, as discussed here:
http://nikongear.net/revival/index.php/topic,6255.0.html. This will give you a very long, close-focusing lens with narrow field of view, should be very good for isolating the subject from the background.
