At least two Japanese camera makers are called Daiichi:
- Daiichi Kikō (第一機工), active during World War II, which made the Primo 4.5×6 folders
- Daiichi Kōki (第一光機), active during World War II, which made the Ami 4.5×6 folder
- Daiichi Kōgaku (第一光学), active in the 1950s, which made the Zenobia folders and Zenobiaflex TLRs
"Daiichi" means "first" or "first place" in Japanese and is a fairly common ingredient of company names.