Is there a way to display an image at full size on Google+?

[JB]

There is a setting on Google+ that allows one to upload the full size of a picture. But, so far as I can tell there is no way to view the image at full size. Is this correct? Is there a workaround?

Example: I uploaded a photo 4000 x 3000 pixels and the displayed version displays at less than 800 x 600. Even if I use chrome right click to get the url of the jpg image, and paste that url into a new tab, it still is only a small version of the picture.
@Sam: the picture at your link has size 2048 x 1356 but when I click on your link it displays as 839x555 which is nowhere near full screen on my laptop. Also, when I right click on the image and open in a new tab it still only opens to 839x555. That is why I am asking the question, because there seems to be no easy way to see an image at full screen, even when there are plenty of pixels in the picture to do so.

Your answer, helped somewhat because of the link you gave to the product forum, in which someone pointed out that pictures are displayed near full screen size (if there are enough pixels) when you are in slideshow mode. That is very unintuitive, but useful to know.