Users to choose how to view images Is it possible to offer viewers different options on how to view an image?

Currently, it just defaults to a flexslider that I have put as default on my image style.

Looking for instructions on how to achieve this functionality by using views.

I know there is a similar post here but that is WHILST creating the content type - I want the user to choose how to see a set of images after the images have been added to the website!
Use different view modes for your entity (node).  Each view mode (also called a build mode) can have different template (.tpl.php) files.  Use hook_entity_view_mode_alter to decide which view mode to use (based on your user's selection).

You can use the View Modes module to create custom view modes.