I will be purchasing an iPad mini for my iPhone to back up pictures (among other uses). I'll be traveling for approximately three months, and, as a traveler, I would say I don't take that many photographs. However, because of the length of my trip and because there's always the chance that I do take more photos, I'm worried if 16gb will be enough as my back up "hard drive."
Assuming the worst case scenario where I shoot HDR for all of my pictures, would the 16gb iPad mini be sufficient? If this question is too vague, then how many HDR photos could I hold with 16gb (I can't find this information elsewhere)?