Bob I think you would need more. Think of it this way, you needed the BR-2 and the BR-3 to get the space for a DX camera which gave the 55 mm a FOV od a 82.mm lens. The 105 mm FOV is even less so you need more space to see the full frame. That is why the 105 is really not an ideal choice, but it could be made to work because you are using the Full Frame D700. With a DX camera, you never fill the entire frame with the image, unless you are cropping it. It will always have some part of the iamge being a black band, so less pixels are on image in that situation.