Full frame and decent glass leaves plenty of room to crop, especially if you only use the images in their digital form.
Taken with a 5DII & 70-200 f2.8 L IS MkII
Before:
DierenPark Amersfoort by .monk3y, on Flickr
Crop:
DierenPark Amersfoort by .monk3y, on Flickr
Taken with a 5DII & 70-200 f2.8 L IS MkII
Before:
DierenPark Amersfoort by .monk3y, on Flickr
Crop:
DierenPark Amersfoort by .monk3y, on Flickr