I have had some fantastic results with 300mm Nikon and Sigma f/4 lenses and extension tubes. I don't understand the above comment about DOF being better with a dedicated macro lens, I had a 150 and 180 macro and found the 300mm to be far better DOF wise, unless you can use the macro lens at f/34. All these pictures were taken with a 300mm f/4 Nikon with a 32mm extension tube at 400iso. Even the DOF at f7.1 is impressive in my opinion. The extension tubes i was using were the Kenko one with the electronic connection.
I have had some fantastic results with 300mm Nikon and Sigma f/4 lenses and extension tubes. I don't understand the above comment about DOF being better with a dedicated macro lens, I had a 150 and 180 macro and found the 300mm to be far better DOF wise, unless you can use the macro lens at f/34. All these pictures were taken with a 300mm f/4 Nikon with a 32mm extension tube at 400iso. Even the DOF at f7.1 is impressive in my opinion. The extension tubes i was using were the Kenko one with the electronic connection.
Kenko extn tubes meter, retain focus and are metal
Neil,
I have a question about the combination kenko tubes and the 300 afs f4. What about the sturdiness of these tubes. I've tried to use them a couple of years ago with a 300 f2.8 VR and that was not really a succes, the tubes had way to much play resulting in loss of contact with the lens. I am considering the repurchase of the 300 af4 for semi macro and still have an PN-11 tube, but being able to autofocus with a kenko tube would come in handy.
Is it possible to use the 32 mm tube on an tripod with a D700 attached to it?
I never had any problems losing contact with the 300f/4 with any of the tubes, the only problem I encountered was loss of contact when you stacked the tubes. Considering that the 300f/2.8 is considerably heavier than the f/4, a tripod would be advisable. Neil.