I am looking for a portrait lens for my 14x17 camera. My friend has a 330mm f/5.6 VI Cooke portrait lens,and it will be cover my 14x17 camera at portrait distance. but I like Heliar, I am looking for a more longer one than 330mm, So how about 360mm f/4.5 Universal Heliar or 420mm f/4.5 Heliar?thanks
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