Hope it's OK to post this here among the macro enthusiasts specifically. The Kenko extension tubes and Novoflex focusing rails have been calling to me. In browsing on the B&H site yesterday to check prices, I saw a Novoflex "Auto Bellows for Nikon". Hmmm. A focusing rail AND a fully-adjustable "extension tube" together for a mere $1K (!!!!), only a little more than the tubes and rails I liked will cost together. Question: *IF* this bellows fully supports Nikon lenses - not sure about that yet - would experienced macrophotographers agree that the more-limited focusing rail in this product is a reasonable compromise for the enhanced focal length adjustment? Or if you prefer please answer the question, "What's the best setup to get for primarily-outdoor macro work?" Thanks in advance.