I own a D3s, D810, and just recently my D850 came in. (yeh!!) Before I start shooting with the D850, I want to be prepared to download the files to my (Windows 10) laptop. Currently I use ViewNX2 as my software to transfer the files from my other cameras to the laptop. I do not use the software for anything more than the transfer process -- where it changes the file name and also puts a unique (counting) number to the file name. I would like to continue with this process but hopefully with a different transfer program for the D850 -- because when I transfer between D3s and D810 I have to keep track of the last number in the sequence and manually enter the next one in the NX2 program, depending on which camera files I am transferring from. Fortunately, I don't use the D3s much -- so it hasn't been a major issue. But knowing I will be using the D810 and D850 regularly, I'd like a simpler process. I'm thinking keeping the ViewNX2 dedicated to the D810 and something else for the D850. Your thoughts and suggestions greatly appreciated! (again, any new software suggested, I would like it to have the ability to put a counting number on each file during the process - unless a better way is now available) Also, when I bought the D810 I had to wait until Adobe came up with the converter in order to view/edit my NEF files. Is that an issue with the D850 or is the converter that reads the D810 file still ok? thx!