I have been reading an article in grantland.com about Redzone. It states there is nothing called redzone in the football field. For everyone, redzone is the point where any team who is in that zone has ability to put some points(well, most teams). This can be referred to "strike zone" in baseball, "mid-range" in basketball and list goes on.
Talking about this era's kickers, I feel ( as a Viking fan) our redzone starts from 35 yard line. What do you feel about at which yardline our redzone starts?