madhums/nodejs-express-mongoose-demo — pull request #58 by TomV (2013-06-22 00:46:28+00:00)
Title: Sample variants seemed to be corrupted, these values work better

I was using the example file as my config/imager.js file, and seeing thousands of files get created in my /tmp file for the thumbnail image, and the server was hanging. These 'sane' parameters fixed the issue for me.