Personally I would never use the Kit lens if I had too, especially when you have used better glass. The 50mm prime lens delivers a beautiful image. I lately have been using a Canon 24mm which is another amazing lens. The kit lens imo is only good when you have a lot of light or for when it's sunny outside. I usually put the shutter up into the 500 area though just to make the lens look better while shooting. The egyptians built the pyramids with whatever old technology they had, Im more than sure at this day and age things would have been done better. Sure you can make the greatest movie on a dvx or kit lens, but that doesn't mean that they are not better tools for the job.