Only possible when the full sized pic was archived too, and then you have to click on the first link above the pictures, it's the same right now for videos (when the video was archived).
In theory the HTML could be modified to deliver the full sized pics immediately.
For example
https://8kun.top/comms/res/16885full.html
could be made to use full sized pics instead of the thumbnails for archiving, but that requires changes on 8kun by CodeMonkey.