Because of what you said, I went through about 600 photos I have on my iphone 4(some hdr, some not); I don't notice the problem you mention. Perhaps you just go

Because of what you said, I went through about 600 photos I have on my iphone 4(some hdr, some not); I don't notice the problem you mention. Perhaps you just got a defective piece? You should probably go to the apple store and ask them about it, before assuming all iphone 4s have the same problem.