I used the flash taking some pictures outside during the day. I wanted to get rid of the shadows on the people. Unfortunately, I ended up overexposing everything. How do you use the fill flash outside during the day? Or, should you not use the flash? I just got a new lens. The tamron 17-50mm 2.8 for my T2i. I've attached the picture that was overexposed. I had it set to Av and the exposure level is set right in the middle. It was set to f2.8. I assume it is because the shutter speed was too fast for the flash? Is the built-in flash on the T2i fast enough for a photo shot at 2.8 in sunlight?