Nigel, you're right it's a goose!! there were ducks in the background and it's a freudian slip. Anyway, thanks for your comments. I think the main goose is sharp but the background duck is blurred, as it is compressed with a zoom. I was not able to compose well as they are spur of the moment shot and they are moving. I was in Program and did not choose the smallest Aper. Also with a 70-300 zomming around I was not where I was and a tripod is near impossible in these subjects since they are constantly moving. Again, with regards to the film, the Sensia 100 is in the camera and I don't have any choice at that point!
Eric, it's a Goose, you goose! :) I think the main one in this shot is called a 'Chinese' Goose. I had one as a pet many years ago. Don't know what the white ones real name is (a common variety goose?), or the other one you captured in the pic (we had one of each... Manual, a white one, Mary, the chinese likw you pic and their son Hercules, which looked like the other ones which we hatched in an incubator and thought he was a member of the family)
Speaking of the pic (I jumped here after reading your 50mm lens Q) I think you needed to leave a little more space on the left for the goose to look into (the beak also gets lost in the background, but that's hard to control) and also include a fraction more of the other one or exclude it altogether.
Also, it's not sharp. And I don't think it's a focus issue as nothings sharp (the other pic is also blurry)... probably camera shake - Sensia 100, late afternoon? (looks like an evening glow although I can't see any shadows to be sure), zoomed in to 300ish.. where's the tripod?