Quote Originally Posted by David A. Goldfarb View Post
For portraits, you're usually in bellows factor territory, so don't forget about that when you calculate exposure and set the power on the lights.
...can you explain this bellows factor issue.....??????? I have a Schneider 150mm f5.6 L lens and a dare I say 'normal' bellows.....and yes, im definately after the shallow depth of field....that's the 'beauty' I'm after with 5 x 4....