-40%
Vintage mystery lens - Aerial Photography ? 5 3/8" diameter BF 18.554 FF 21.853
$ 157.87
- Description
- Size Guide
Description
Cool find. Massive 5 3/8" diameter. Heavy case with thread mount. Has BF FF markings and a serial number which makes me think military or scientific.Has dust inside and a very small chip on the front.
Great to collect or turn into a new scope of some kind.
Info from a helpful ebayer:
Just FYI, the BF and FF are back focus/front focus lengths. So this is probably around 20” focal length and f4. That really fast for such a long lens. May be good for wetplate collodion photography. Need fast lenses for portraits there.