When photographing portraits having shaded half of the model's face (for example having him/her stand close to a window casting light on one side of their face) it's almost unavoidable to not capturing the model with different sized pupils. Is there a trick dealing with this?
The problem can partly be solved by having the model close the eyes and take the shot just when they open them again. Another is of course to use flash. Is there anything obvious (or less obvious) that solves this problem other than these methods?
Clarification: Of course you can enlarge/shrink a pupil in post production, but I'm looking for a technique that don't require any post production.