It's quite clear that a lot of people without any experience of nature photography, still don't understand the demand for crop sensor higher level cameras like the 7D mkII, and are still stuck in the false argument that it is about price i.e. why get a crop sensor camera if you can get a FF camera for just a bit more. Indeed I see a lot of nature photographers with FF cameras like 5D series cameras, who crop nearly every photo they take to less than APS-C size. It really is very simple. In many places, no matter how long your lens is, you will still have to crop. It's not just with telephoto stuff either, but with in the field macro photos. I'm still surprised at how many photographers don't understand that if you crop a photo to APS-C size or smaller, then a FF camera has no advantage whatsoever. You just have big file sizes and have to do a big crop on nearly every photo you take.