I am wanting to shoot some indoor photos. Rock bands, car shows, etc. Flashes aren't always possible and fast film has its drawbacks. I am looking at a faster lens. I want to know if there is much difference, besides price, of a Canon 85 F1.8 and a F1.2L. Will I gain enought to justify the $1100-$1200 price difference? I dont mind faster film, but grain only works in certain situations. Thanks!