35mm Thoughtful Portraits

Did these in Cambodia, am not sure how well I can print them the main subject is a bit underexposed (averaging meter distracted by light background, should have added some exposure manually). I think in the future I want to try more of these type photos with probably a 50mm or 90mm lens to isolate the subject more (think I used a 50mm in these shots). I like the quiet thoughtfulness of these shots. There is a real beauty to the way peoples expressions, gestures and emotions constantly change, something eternally fascinating to watch and record, people are beautiful!