Seikosha-Rapid

The Seikosha-Rapid was a leaf shutter made by the Japanese company Seikosha. Its top speed was 1/400 in #0 size or 1/500 in #00 size. It was followed by the Seikosha-MX.

Variations and cameras equipped

Top speed 1/500

Early variant with T, B, 1, 2, 5, 10, 25, 50, 100, 250, 500 speeds:

• Minion III by Tōkyō Kōgaku

Usual variant in #00 size with B, 1, 2, 5, 10, 25, 50, 100, 250, 500 speeds:

• Olympus Flex A 3.5
• Zenobia C II, H II, R and R II

Unknown model:

• Fujica Six IS, ICS and IICS (top speed 1/500)

Top speed 1/400

Model with #0 size and B, 1, 2, 5, 10, 25, 50, 100, 200, 400 speeds:

• Koniflex
• Olympus Flex I, BI, BII and A 2.8