Photos 1-12 on Film №4 are made before the trek. Frame №5 is a playful photo of Dyatlov perched on a tree. This photo tells us the photographer was on a very friendly base with Igor who is fooling and not afraid to look silly. Members of the group appear on frame №17. Frame №21 proves that film №4 was shot by Slobodin. Frame №22 is blurred and out of focus, but we can see Thibeaux-Brignolle and Zolotaryov swapped hats. There are similar photos of that moment on film №1 and film №5. It is interesting that Zolotaryov was showing his camera for everybody to see (hanging on his neck most of the time) but he didn't make photos on this trek. Not with the camera that was found in the tent anyway.