Full sceen images in post - explanation

Could you please clarify the "full-screen images in post" please? From your demo I'm able to see full-screen image only by clicking thumbnail in category blog (portfolio or polaroid style). This is not "post" but "category blog preview".

full_screen_images_in_post.jpg

Also images (plural) in post (singular) I can't find. Is it just misleading heading (Lorem ipsum) or some hidden feature? Thank you for explaning.

Hi

I'm not sure if I understand what You are asking me about. This is happening automatically when You insert a main image into K2 item and image is enabled in this item's K2 category.