abruzzi
Member
I guess I just assumed a rangefinder, if a view camera wonder how birght a MF lens will be? I have both Speed and Bushman 2 2/4 by 3 1/4 with 90mm and 100mm lens, when using the ground glass image is rather dim.
I primarily use an Arca Swiss F-Classic 6x9 monorail for shooting 6x9 and digital. The ground glass is reasonably bright with an ƒf5.6 partly because the Arca Swiss ground glasses inforporate a fresnel. With the Nikkor-M 105mm ƒ3.5 it is quite bright, and with the ƒ2.8 Xenotar as well. I even us a 150mm Apo-Ronar ƒ9 as my slightly long lens and its bright enough, but does need the dark cloth.