I just (18 Dec 2013) bought the Nikon D7100 camera (KIT with 18-105 lens). I bought it while being at vacation abroad, in Austria, Vienna at Saturn store. I did not had a chance to check it deeply as it was last day and i was hurry to airport (what a mistake to buy at last day), so when came home and unpack i discovered two problems:
1) Flash is not fired. No error, it opens automatically but when shoot is taken there is no flash. On the image playback, after shoot is taken, info shows that flash was fired.
2) Another strange issue is that whenever i select not auto mode on dial (S, P, A, M any mode with is not Auto) it still taking shoot at auto mode, also it display in upper screen and in Info that mode is still Auto, regardless the mode dial is set in different position.
I tried everything: looking at Google different forums, reset to default settings, format card, update firmware (same version though, as camera was with up-to-day firmware 1.0.)1, I even tried different lens. Nothing helps. I have Nikon experienced friend which played with the camera too and also nothing found.
I can of course getting warranty, but it little complicated as i bought it abroad, and i have to now ship this somewhere, i even do not known where yet, so i believe it is complicated and long term process, so i hoped that might be someone have an advice.