I am in the future going to up grade to a Sony A7r Full frame camera. I understand that you can fit Leica Lenses with an adapter to this Sony camera body. I think that Sony Have only a couple of lenses as yet but, in the future hope to add to their collection Has any one any experience of which Leica lenses to buy. Also, which not to buy. In this weeks A.P. 15-03-14 . Ian Burley discusses the Leica Elmarit -M 24mm f/2.8 Asph lens and carries out tests on Sony Alpha 7. I found the article very interesting. At £3,000 , and to have crop factor, I shall not be buying one. I look forward to any recommendation that you may have. Alphonso.