After the previous test, we decided to use the iphone5 under harder lighting conditions and by returning back to the Swanston Street side.
The take away:
Hmmm, a bit of a mixed bag. The results appear to be quite poor again compared to the sunny scenario. Still not too bad as a quick test, though it is now obvious that this side is problematic due to the shade, and if we intend (or have to) shooting under these conditions, we will need to premark and code the site.
To still try:
Different overlap percentages