Quote Originally Posted by Corran View Post
210mm f/9 Graphic Kowa

300mm f/9 Nikkor-M

Pick your focal length. Both will be about the same size.
Both of these lenses fit the criteria the poster requested covering 8x10 and "very" lightweight. You could add the Fuji 240A, Fuji 300C and 300A, Fuji 450C, G Claron 210, Germinar 240,