Yeah, I noticed that if I don't hold my 6s perfectly still the pictures will come out blurry. If I tap the screen or press the side buttons a little too hard causing the phone to shift a little I get blurry pictures. What I do now is I take three or four pictures and eventually one of them will come out fine. I do have HDR and Live Photos off so that could be the issue. Still, the phone should take normal pictures without having those features on. I had HDR off on my 5s and the pictures looked just fine.