Difficult but not impossible — I think there's a "selfie" halfway down the article. > "A photo of astronaut John H. Glenn Jr. aboard the “Friendship 7” Mercury

Difficult but not impossible — I think there's a "selfie" halfway down the article. > "A photo of astronaut John H. Glenn Jr. aboard the “Friendship 7” Mercury spacecraft during the Mercury-Atlas 6 spaceflight." The grain and quality seem to match the external photos, so I think it's the same camera. John must have had enough media training to know not to spike the camera like we usually do for selfies, he's valiantly scanning the horizon instead.