While not a DSLR novice altogether, I have purchased a Canon 500d, & seem to be having difficulty with the redeye. I set it & leave it on, presuming it will be effective at all times, & most of the times it is. But when I do some indoor shots, with varied light, the redeye doesn't seem to always work. Scenario: theatre setting. Strong lights on stage area. I am shooting from the audience using auto. Redeye set. So what can I do to avoid that awful redeye. Is it the camera? Should I not use auto? If not, why not. This camera is great, picture resolution fantastic, but that redeye spoils it all. Appreciate any assistance.