If you haven't yet discovered it, I have added 1000mm f:13.6 Wollaston Meniscus lenses to my product line.

The emerging details are here:
http://www.apug.org/forums/forum379/...scus-lens.html

and here:
http://www.largeformatphotography.in...ston-Meniscus-!!

Additional details on Wollaston Meniscus lenses on my web site at:
www.Re-inventedPhotoEquip.com

Reinhold