1)
Don't know how long the full film of this will be allowed to stay on youtube for free...but even if it gets taken down by the time you follow the link, I would highly suggest renting it or finding it elsewhere for free if you can.
The Double Life of Veronique-Krzysztof Kieslowski
https://www.youtube.com/watch?v=uiQ4Bq6IHyo
Krzysztof Kieslowski has a wonderful understanding of light, softness, and framing. An excellent visual movie.
2)
Henri Cartier-Bresson, A wonderful outlook and approach to photography, worth a watch and a listen.
3)
Helmut Newton was very well known and pretty edgy, but brilliant in his approach and preparation for his shoots.