In the light of the considerations in this previous post about the limitations of the Sony a7 R111 and the point and shoot Olympus XZ-1 I went ahead and ordered the Voigtlander VM/E Close Focus Adapter. As mentioned in the earlier post, this adaptor enables me to use my Leica M lenses on the old Sony NEX 7, thereby giving me with the capability to do macro photography whilst I am on the poodlewalks.
I used a Summicron 35m f.2 lens that was on my old Leica M4, and so I was able to put together a macro camera without outlaying too much money. I had purchased the M4 in Melbourne in the 1970s, but it is badly damaged and not functional.