UV Lenses - Kyoei 80mm and Kuribayashi 35mm

[Kuribayashi]

Here are a couple lenses for UV. Kyoei Acall 80mm f/3.5 (left), and Kuribayashi Petri Orikkor 35mm f/3.5 (right).
These two are M42, but may be found in other mount versions.
Both lenses were made by Kyoei, and you may notice some similarities in the two lenses compared here side by side.
These lenses transmit UV down to 325nm using my Sparticle bandpass filter array and Baader U test.
The Kuri 35mm lens has miniscule to no focal shift, and comes in other versions, such as the W.Acall Kyoei 35mm f/3.5.
The Kyoei 80mm has a bit more focal shift, but less than 135mm and 180mm Kuri/Kyoei versions.

Sparticle bandpass filter transmission test of Kuri 35mm with Baader U filter on lens.

 

[kds315]

Congrats Steve, another nice find!

 

[Kuribayashi]

Thanks Klaus, It would be interesting to see how this lance compares to the older El-Nikkor 80mm.

 

[Kuribayashi]

Thanks Klaus, It would be interesting to see how this lens compares to the older El-Nikkor 80mm.