mobile

I have reset my Samsung Galaxy Tab S 8.4 T700 running Android 4.4.2. I had totally forgotten that there were some pictures on the internal storage. I wish to have them but.. Data restore apps need root, right? (Most I've read about do)

So. How do I restore my pictures from the internal storage (if any other methods are possible)
And. How do I root my Tab S WITHOUT TRIPPING KNOX..