After many tries i have declared flight photography to be impossible with my camera when i am using aperature priority...i have a 300D and it only has the option of focus when you press the shutter half way it focuses and stays there and to focus again you have to press the shutter again...there for it is impossible to do because if you are taking the pic of a fast bird by the time you press shutter and the delay it is out of focus...and if i want to track the bird i have to switch to action photography setting and lose all setting control...also i found when i was shooting into blue skies and even light clouds the bird was always underexposed...what should i do to fix this in terms of exposure compensation???
..... 
