I don't think I have ever setup a site to have the image alone display in the browser. You might get the full image size, but you lose all the page options to make
SEO possible. I've done it two ways, just depending on the site and how I'm feeling right then...
1) open it in a remote window where I can still have some on page information related to the image - down side here is that there are enough people that get confused by remote windows and think of them as popups rather than content loading... You also have to consider where the image information will come from in the page for
SEO. although, thinking about it now... not sure I have done this with WP..
2) have them load on a site page and then be constrained by the theme.
I think it may end up depending on the type of site you have. With my WP sites, they are really all affiliate type sites, so I don't really have full size images to offer. My images are links to sponsor sites. Now, if you were using WP as part of a pay site where full sized images are expected because they will be downloaded, I think I would just load them in the browser and be done.
I have no idea if that helps or not!
