My 790mm F:5.4 Wollaston Meniscus lens will be available in a few days, but until then, here 's a data sheet covering the image circle, bellows draw, and effective apertures at various focusing distances.

Notice that it covers a 1425mm (56") diameter circle at infinity, and well over 1830mm (72") !!! when focused at 3 meters (10'). The folks shooting huge wet plate and paper negative portraits now have a really fast lens for ULF alternative photography.

More later...
Reinhold

www.re-inventedphotoequip.com