Hello,
I am working with Credo 50 on a 6x9 Arca. I would like use a long lens with minimal bellows draw so I have been looking at some classic large format telephoto lens: Nikkor T ED 270, Schneider tele-Xenar 250, and Fujinon T 300. I am most concerned about the sharpness and contrast these lens might produce at F/11 - F/16. Does anyone have experience using any of these lens with a digital back? Will a telephoto lens be noticeably less sharp if I am making 30x40 prints than my Sironar digital lens or a standard 250mm lens?
I would strongly prefer not to use a standard view camera lens. I am going to be photographing architect in the field daily over a period of about 6-8 weeks for a Luminous grant I received and want to avoid having to change the bellows and add a rail extension every time I want to try a telephoto view.
Thanks for any advice, Drew Harty