Bogart has a tough, lived in look and any age difference didn't appear out of place. After all he met his real life wife. Lauren Bacall, when she was 19 (25 year difference). In films it's not unusual for an older man to attract a younger women. High Noon perhaps pushes a bit too far.

In real life older men have relationships with younger women and older women have relationships with younger men. I know one woman who did both.

At time of Casablanca, they usually used hard light and the female actors, commonly had a frontal key light for their CU/ It's about making them look like movie stars. .

If you want a tough male lead, you don't light them like the female lead.

Marlene Deitrich had her own personal lighting director. A famous lighting designer called Joe Davis. He was responsible for her image on stage and screen for 22 years. She was very protective of her image.

Brian's quite right - you might spend a very long time doing the tuning for these people. Casablanca is a great example of careful lighting and camera setup, shot by shot. I don't think the attempt was to make him look older, but to make him look harder and different to Bergman's look.

How to do a basic COLOUR GRADE on your SMARTPHONE FILM - YouTube

It was just getting good and I thought nice, and then he wrecked it with the last bit, the greeny murky look. Just shows how one person’s likes are different. My thumb was up till that moment and I ended up hating it.

At the risk of adding even more confusion, why is it that folks who make these tutorials almost never use videoscopes? This fellow mentions the RGB parade in passing 'tis true, but passes it off as unimportant. I thought the golden rule was you can rely on scopes, but can't be sure how accurate your display is unless it is a properly calibrated professional one, so what looks good on your display to your eyes may look pretty awful on someone else's and since he is using a laptop................