Properly used, DSLRs can help the photographer improve the quality of his or her photography greatly. The instant feedback available through the LCD screen can be incredibly valuable in helping a photographer correct mistakes and produce better pictures. Still, taking full advantage of it can be a problem if your eyesight isn’t what it used to be or if you’re shooting outdoors under bright sun.
A variety of options are on the market to help with this problem. One of these is the HoodLoupe 3.0 viewer. While this tool has been available for several years now, the latest incarnation is a nice upgrade.