If for instance I want to see how night scenes with just city lights in the street are going to be exposed on a movie camera with 35mm film stock of 500 ASA (like Kodak 5218). The shutter angle is the normal 180 degrees, and the aperture of the lens is T2.8.
I take a DSLR and choose ISO 500...
Does anyone know if a director's viewfinder (like the Alan Gordon Mark V: http://www.alangordon.com/s_camaccessories_markvb.html) does actually focus images, so that the out of focus elements look just like they will look on screen?
In other words, is it an afocal system -- does it focus light...