When movies are filmed in this ratio the picture is a very wide, panoramic image. This is one of the widest ratios currently used. Ratios are decided upon by the producer or director so it can vary from movie to movie. Ratios can go higher than 2.35:1 although it is not very common.

This is another common aspect ratio used in movie theaters. Usually this is a matted process using an academy ratio film. The matted image may be either a hard or soft matte. 

This is the ratio used on current widescreen TV's. This is the midpoint between 1.33 and 2.35. That is this ratio maximizes both ratio's to get the most out of all ratios. 

This ratio is another common ratio for matte's

Also known as Standard/Full Frame/Academy Ratio. This is the Ratio familiar to most people.