Well you can always pause and take a photo with your phone and some movies have lots of screenshots out there
I listened to some artists (don't remember who) talked how well executed Godfather is. I am planning to watch it (I just checked how long it is huh I can't even watch 1 hour movie in one sit.)
I am on my way to watch classics. I focused lately on older animations from disney and ghibli.
Some modern productions lost its magic and focus mostly on action nand a tone of flashy effects. I binged Star Wars movies and I appreciate how the first ones were made.
I watched John Wick (my brother wanted to see the newest one so I had to catch up) there is more action than actual plot but I love lights and colors used in them. They have good composition too. Whenever we see John walking somewhere he will be shown in the centre alone in a huge empty environment where everyone could take him down. Soundtrack is probably my favourite part.
Arcane is great from artistic point of view. But it is series and It is only on netflix. Apart from unique art style it has great composition which shows how characters change overtime. There is a lot more to say about it but I have to rewatch this with my current knowledge. And it is not only for League of legend fans
Do you have any reccomendations? I will gladly add more classics or other films to my list. I will try to think about other films I suddenly forgot everything