Hasselblad Ektar lenses... 80, 135, ...254mm?

[MMfoto]

There is scarce information online about the Kodak Ektar lenses for the Hasselblad 1600f. Many people know about the 80/2.8 and its Heliar design. The 135mm is a little less common. But I cannot find anything but a quick reference to a 254mm f/5.6 (10 inch) Ektar for the Hasselblad. Does anyone have this lens or have a photo/illustration? I'm interested to know the optical formula as well. I found one possible reference that seemed to indicate it was a 5/3 design with a central, cemented triplet.

If anyone knows of an ancient website that I can pull up in the Internet Archive that would be appreciated as well.

Feel free to post random tidbits and generally discuss the Hasselblad Ektars in general. They are an intriguing corner of camera and optical history.

 

[OAPOli]

As far I know, the 254mm and 55mm lenses were only made as prototypes.

The 55mm is especially weird; it could only be used with the mirror up. But the early F cameras didn't have that capability...

I have a 2.8/80 Ektar. Mine is a Tessar type.

Brochure here: http://www.hasselbladhistorical.eu/PDF/Brochures/1600FSpiral.pdf

Test here: https://www.photomeeting.de/1000F/US_Camera_Jan1949.pdf

 

[MMfoto]

As far I know, the 254mm and 55mm lenses were only made as prototypes.

The 55mm is especially weird; it could only be used with the mirror up. But the early F cameras didn't have that capability...

I have a 2.8/80 Ektar. Mine is a Tessar type.

Brochure here: http://www.hasselbladhistorical.eu/PDF/Brochures/1600FSpiral.pdf

Test here: https://www.photomeeting.de/1000F/US_Camera_Jan1949.pdf

Thanks for those great links.

"I have a 2.8/80 Ektar. Mine is a Tessar type."

Is there more than one optical version of the 80mm Ektar? I thought they were all Heliar type/5 in 3, modified triplets?