Okay, so I put a roll of 100 speed film in my camera since we were going to the park and it was very bright out. For the first 3 photos, I forgot that my camera was still set for 400 speed film and promptly set it to 100. Out of the entire roll, those first three photos were the clearest and has the best colors, by far. Everything else was either washed out or on the verge and blurry, for the most part, since it was all hand-held. I did something similar a while ago with 400 speed film set at 800 and got similar results. I was expecting the photos to be underexposed but they turned out great. Can anyone here explain how this worked out as well as it did? Is it a common practice for people to set their film speed higher on the camera than what it's officially rated for? Thanks.