explain that you need to use sorl's ImageField for AdminImageMixin
explain that you need to use sorl's ImageField for AdminImageMixin

If you are just looking through the docs, and end up at http://sorl-thumbnail.readthedocs.org/en/latest/examples.html#admin-examples, you'll never see the section above explaining the ImageField for models, and I and others on StackOverflow have fun into this. Here's a simple change that makes it clear.
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