There are a few reasons. There are still a lot of systems that still record to tape, typically in your local minimart, garage, etc. Cameras in malls have a larg

There are a few reasons. There are still a lot of systems that still record to tape, typically in your local minimart, garage, etc. Cameras in malls have a large field of view and cover a large area, so there are very few pixels on target. And as the article implies, lighting plays a big role - it changes a surprising amount even in indoor installations. This is a very tricky problem and there is a lot of work being done in this area. Surprisingly one of the biggest issues is getting customers to realize that there is a real benefit to upgrading their cameras.