That picture on the left is heavily edited. Stalin favored having his pictures edited because he had scars on his cheeks from smallpox. Yes, nearly all historical pictures of Stalin are edited to hide them. It might have spiked his interest in propaganda. The infamous "Sexy Stalin" picture is even more detached from reality because it's an edit of an edit of an edit.
https://history.stackexchange.com/questions/46123/when-did-josef-wissarionowitsch-become-sexy-stalin?rq=1 