Apparently this is normal for iPhones.Doesn't work. Religar had to adjust my sideways chicken avatar. Tried everything. Even tried using my tablet.
You can't do anything about except turn your phone sideways when taking pictures like Rellgar said (home button to the right), or use a different camera app, or use some app to rotate the picture after taking it.
Read this page:
http://rotatemailer.com/sideways-pictures.html