A barrage of comment, criticism and confusion surrounding the purported tendency of the iPhone 5 to display ghostly purple halos when exposed to a prominent light source has prompted a debate amongst camera buffs and Apple’s rivals.
Typically such lens flares appear white or yellow, as they have done on earlier generation iPhones, but the purple tint has left some of the most authoritative sites flummoxed as to its cause.
DP Review think that the most likely explanation lies in the anti-reflective coating applied to the sapphire glass lens which may use a different technology to previous devices.
Speaking to the guardian, Nokia’s lead program manager on imaging experience, David Dinning, said: “You put in one lens, and then another lens to correct errors such as aberration or soft edges in the first, and then another lens to correct the errors in the previous one.
"We prioritise having a wider angle lens, and protect against lens flare in the design with the lens coating. And we also have matt black internal surfaces."
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