Is there a way to disable fancybox for specific images, as with the following plugin? http://wordpress.org/support/topic/plugin-easy-fancybox-disable-fancybox-on-individual-images?replies=6
(Or alternatively, disable for all, and allow enabling for specific images.)
Many of my posts just have a header/featured image at the top just for style and theme. There's no reason for the user to think she can click on it and get a boring surprise when the image that pops up is just the same-sized image.