- Omega (Paris): French camera manufacture later became Olbia.
- Simmon: Used the branding Omega for enlargers and cameras.
- Koni-Omega: Konica made camera. Revision of Simmons Omega 120 camera.
- Koni-Omegaflex: Konica's interchangeable lens TLR camera.
- Rapid Omega: Mamiya-made version of the Koni-Omega.
- Omega View: Large format camera brand now known as Toyo.
- Omega / LPL: Japanese enlargers branded and distributed in the United States by Saunders.
- OmegaSatter: was formally known as Saunders, photographic distributor