Instead of posting on Facebook directly, I would like to be able to share my photos on Facebook from a photo sharing site to Facebook. I was hoping Zenfolio could do this easily but their Facebook integration is not what I was hoping for; my bad for not actually trying it out before launching my site.
All that Zenfolio does is post a standard link with an icon to Facebook rather than a facebook-size photo. This link with an icon is not an appealing presentation to my Facebook Page audience.
I use also Fine Art America (FAA) and 500px. FAA works similarly to Zenfolio, albeit in a more streamlined manner, but it too ultimately only posts a link with an icon. 500px does the best job from all 3 services I use with 2 issues: link is still displayed along the bottom of the photo which crops the photo, and the photo itself is aggressively downsampled to the point of being unusable for presentation.
I am willing to consolidate my services to use a single paid service that is capable of posting full size linked images to my Facebook page.
EDIT: Here is an example of from a page of a known Photo Magazine that contains a near full size image along with a link. It seems the image is still crisp and not overly down-sampled. This is something i would like to be able to do: