The current image flexslider_fields support for images is awesome!
We'd like to be able to switch from using the Field Slideshow module to instead use Flex Slider as Field Slideshow is lacking responsive-goodness.
Field Slideshow has on their project page: "This module plays well with: ... Field Collection (to provide the images to the slideshow, and use additional fields for captions and/or links)"
This is what it looks like in use when I am looking at the display options for my content type which has a field collection:
And when those options are expanded: