T.Y.O.W.
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The acronym T.Y.O.W. corresponds to a Japanese lens maker based in Tokyo, whose full name is currently unknown. It made Taiyo-Anastigmat barrel lenses for large format cameras. These are usually marked T.Y.O.W. TOKYO TAIYO–Anastigmat. The lens name certainly comes from the word taiyō (太陽), which means "sun" in Japanese.
List of known Taiyo-Anastigmat lenses:
- 18cm f/4.5 (reported only)
- 21cm f/4.5
- 21cm f/6.3
- 210/6.8 (reported only)
Links
In Japanese:
- Large-format Japanese camera reportedly having a Taiyo-Anastigmat 21cm f/4.5, at tinyslope.com
In Russian:
