Yellow filters for Voigtlander Bergheil

Yellow filters for Bergheil






1926 - "Alpha" yellow filters for Bergheil.

On the left, 36.8mm filter for :
- Heliar 3.5/10.5cm (Bergheil 6.5x9)
- Heliar 4.5/10.5cm (Bergheil 6.5x9)
- Heliar 4.5/13.5cm (Bergheil 9x12)

On the right, 41.8mm filter for :
- Heliar 4.5/15cm (Bergheil 9x12)

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