Photo mode has now been added, now just press the T key to switch to photo mode. I guess this changes everything, so all I can say is...bird!
The photos I took in 3 minutes:
UPDATE 3 (PHOTO MODE)
Source: Steam Community (opens in a new tab)
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 9283591 · public branch
Steam updated · First observed