Apple’s guidance, which it has posted to its website, says, “Most small cameras, including those in every generation of iPhone, may exhibit some form of flare at the edge of the frame when capturing an image with out-of-scene light sources.
“This can happen when a light source is positioned at an angle (usually just outside the field of view) so that it causes a reflection off the surfaces inside the camera module and onto the camera sensor. Moving the camera slightly to change the position at which the bright light is entering the lens, or shielding the lens with your hand, should minimize [sic] or eliminate the effect.”
This statement follows similar advice last week from Apple engineers. Purple lens flare is not unique to the iPhone 5, but with Apple taking a very public beating over its Maps failure and some handsets being sold with scratches and marks, it’s become an issue some users can’t seem to get past.