2.35 aspect ratio

[Pete Burger]

[Aidan Tanner] “and I don’t fully get how you measure aspect ratios… please help!!”

Aspect ratio is the ratio of the width of the image to its height.

2.35 aspect ratio means the picture is 2.35 time wider than high.

For FullHD video (1920 x 1080): You simply divide the width (1920) by 2.35 to get the correspondent height

1920/2,35 = 817

So your 2.35 video is 1920 pixels wide and 817 pixels high.

Maybe these help for better understanding:

https://en.wikipedia.org/wiki/Aspect_ratio
https://en.wikipedia.org/wiki/Aspect_ratio_%28image%29

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“Tragedy is a close-up; comedy, a long shot.” – Buster Keaton

[Pete Burger]

[Aidan Tanner] “I was wondering how to easily mark a monitor with tape”

One way is to create a full-sized picture or video that has markings for the aspect ratio you like, show it on the monitor and tape it accordingly. You can prepare a foil (is that the correct english term?) with different cropping marks and put it on your monitor or screen.

If you have a Canon VDSLR (other than the 7D) you can use Magic Lantern and the provided cropmarks

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“Tragedy is a close-up; comedy, a long shot.” – Buster Keaton