It has been rather dull and snowy here in Switzerland ever since I got my 7D, but I managed to get out with some half decent light and make a couple of shots this last weekend. It was also the first real outing since I got my 300mm f4. Unfortunately there was not too much around (well within my reach at least) and I was having trouble with the mergansers (see eager to learn post).
Camera Model Canon EOS 7D
Shooting Mode Aperture-Priority AE
Shutter Speed 1/500
Aperture Value 6.3
Metering Mode Evaluative Metering
Exposure Compensation +2/3
ISO Speed 400
Lens EF300mm f/4L IS USM +1.4x
Focal Length 420.0mm
Flash Off
Congratulations on the 7D. So far, I like mine a lot.
I like the shot. Good composition and nice, soft light. A polarizer might have helped to reduce the reflections on the water a bit.
I like the detail in the duck and the comp. Would consider toning down the highlights in the water behind the duck, it is a little distracting from your main subject.