Eye of a needle
It is easier for a camel to go through the eye of a needle than for a rich man to enter the kingdom of God. Or so they say.
This was taken using a Sigma 105mm macro lens coupled with a reversed Nikon 50mm to go beyond the 1:1 magnification the macro lens usually delivers. The depth of field is almost non-existent at this magnification - so much in fact that parts of the needle would be out of focus if it wasn't perfectly paralell to the front of the lens.