Hi, I like shooting highly magnified pictures of small objects. I shoot at f/4-f/5.6 for that selective focus look. The DOF at f/2.8 with 65 mm of extension tubes is too shallow. I use the Tamron 90 f/2.8 mm macro lens (without stabllisation) with 65 mm of extension tubes. I use a tripod, focusing rail and the Wimberley Plamp II etc. However this setup restricts my movement and I cannot get into places that I'd like to. I'm thinking of getting a Nikon 105 f/2.8 VR macro. Will the VR be effective with 65 mm of extension tubes, or even 31 mm of extension tubes? Will I be able to get sharp handheld pictures at say 1/60th of a second at 1:1 magnification and a 31 mm extension tube?