Technically, if your institution holds the copyright, you can license
derivative works however you like (and cropping, resolution changes are
technically derivations). BUT, I think it would be difficult to enforce
resolution as a derivative work if you are putting both out on the web. I
don't
We take a pretty conservative approach here and just don't use them. Even
if it can be construed as fair use, you still have to defend that use in
court if someone sues you. It's cheaper to just err on the side of
permission-only.
Shana
Exhibit Developer
Science Museum of Minnesota
On Tue, Aug