I have the GF1, a Nikon adapter (very bulky IMO) and a 50mm 1.4. I love the results but find myself wanting to lose some of the bulk of the lens and adapter combined. 1. Are all Nikon adapters the same length? 2. Is there a brand of lens out there that has a lower profile adapter than the Nikon adapter? 3. Or, is there a 1.4 legacy lens that has a much lower profile than the Nikon 50mm 1.4? Number 1 might be a really ignorant question but I felt I had to ask as it would be the easiest/cheapest solution.