I run into the same focus problems when I get in close. I seem to shoot most of my macro outdoors using my monopod, and generally there is just enough breeze to keep everything moving a little. When you get this close to a subject, DOF is very tiny. Some of the better micro macros are done by shooting a group of shots at slightly differing focus points, and then masking the OOF areas and stacking them to achieve greater DOF than can be done in a single exposure. I think that there is a DPC tutorial on it somewhere.
Ext tubes are my choice too for this sort of thing. I sometimes use an 11 mm tube on a 20mm lens and it is a great combo if you can put the lens right on the subject. |