I have seen several instances of pro photographers who carry around a heavy-duty DSLR with a simple P&S mounted on the hot shoe of the DSLR. Any ideas why they are doing this?
My first thought would be that they would shoot photos with one and video with the other, but it didn't seem that way (they only took photos with the DSLR as I looked at them)
My second thought would be that the P&S was a backup if something happened to the DSLR. But then why not carry a second DSLR? And why connect them together?
Any other scenarios?