These two cubs were very interested in me and kept standing up and craning their necks to check me out. Fortunately, their mother, who was about four body lengths ahead of them, was not. Finally, she gave a huff that must have said to them to quit looking at me and catch up, which is what they did.
The perspective here is close to real-life since this shot was with a focal length of 105 mm; my telephoto lens stayed in my backpack, which I wanted to keep on in case the mother charged. This encounter occurred on the Highline Trail as I was hiking from Granite Park Chalet back to Logan Pass. The bears were near enough to be quite close but far enough that no one felt threatened (though I did unsheath the pepper spray).
Glacier National Park, MT-- August 2003