Working with my Sigma 10-20 with a Jessop's 13mmextension tube with A contacts. Not a combination for pixel peeping! I'm wondering if my 16-85 might give better results?
Unsurprisingly, I get better results in controlled situations indoors...
...than handheld shooting outdoors.
Zoom is set for 20mm or just a little less. Any shorter and the point of focus is located
within the lens itself. (This is a great way to discover just how much dust there is on the interior elements of your lens!) Front element is almost touching the subject; not all subjects tolerate this.
Cross posted from "Macro by any means necessary."