I was hoping someone could help out on the best choice lens for portrait work 3/4 lenght to full length. Will be using the 503 CWD with the CFV II back. It came with the 40 CFE lens. I also have a 50 CFT distagon. Test shots show that either will work depending how close I get. Would the 50 be better since it is less 'wide angle' and therefore would create less distortion of facial features etc? For close up work I have the 150 CFT and 250 CFT so there will not be a problem there. Would appreciate anyones comments.