Went out today to try and practice/learn BIF. Tried the suggestions made by this forum and I'm starting to improve and get some keepers (I hope).Best 3 out of about 60 tries (in some shots, the bird wasn't even in the frame ). 7D, 70-200L/2.8 @100,130mm ISO100, TV 1/800s, Aperture 2.8-4.0, hand held, cropped, DPP. Comments to help me improve are welcome. Thanks.
Nice Job! With my 7D I rarely shoot BIF under 1/1600th sec. You may try that for even sharper imagery and ISO 200.
Have you tried changing your AF to the back button instead of the shutter button? Also, just wondering what AF mode you're using? Once I got used to panning and getting the bird in the image more often, I found the single AF point worked better for me than the expansion point... Expansion seems to capture a few more images but I found the single AF point will give me better, sharper images when I do get them in the viewfinder... Spot AF is very difficult to use for BIF on the 7D but great for static shots...
Looking forward to seeing more of your BIF work and the progress you're making. Looks like you're off to a wonderful start! Congratulations!