CHHAHH,

Are you familiar with the links on this page?
www.largeformatphotography.info
Particularly helpful relative to your initial question are the spread sheets on this page. http://www.largeformatphotography.info/lenses/

Dagors are known for having a wonderful glow to their images and their wide coverage. They are quite a bit more expensive than the 300mm Schneider though and in most cases lack the coatings of a current Schneider.

My shooting partner is a very happy 8x10 Deardorff shooter. He is a much younger man and can lift all that mahogany better than I.

I will have to look for ‘book "Studio" Paolo Roversi’. Thank you for the idea.

John