I want to photo something that is maybe 1mm x 1mm in size, so that I can see what is on it. I have a canon 100/2.8 macro that is 1:1, but I think that alone may not be enough. I have a 50/1.4 as well, has anyone tried reversing that on a 100/2.8? I also have a 25 mm tube. Would like to know if anybody out there has the experience photographing such small stationary objects? What kind of setup could anyone recommend?