I am looking for a lens for my Canon 550D for astrophotography. What lens would be suitable for it? Thank you
Background: This question is largely inspired by one of the answers in: What limits the size of digital imaging sensors? So the answer mentions uber-large image sensors that are made by "quilting" or ...
I want to print out either of these two Milky Way Photos on a 12x18 size photograph (Or vise versa if it is horizontal). http://500px.com/photo/77785439/milky-way-touching-the-trees-by-tom-jones ...