Board Thread:Naruto Discussions/@comment-25212736-20140722185642/@comment-24531362-20140723075639

JOA20 wrote:

Obito's Sharingan has never been CLEARLY shown when he was using Kamui until some chapters ago. It's just like when Obito fought Konan: there was this one panel where his eye was shown up-close while using Kamui and yet it was obscured, to hide the truth from the readers. Everytime Obito used Kamui in the manga, he always had the Mangekyo active.

Maybe. No clear image makes me suspicious. What we do know is that post-Kamui shots have shown plain ol' Sharingan, even almost immediately after use. The only time we've seen a clear maintenance of the Mangekyo is post-unmasking, when Obito jumps from Kamui to Kamui in seconds. I peronally think this 'deactivate after use' plan is how Obito feigned EMS for so long.