2. Screen Ratios
 A screen ratio is usually expressed as two numbers with a colon
in the middle
 Like 4:3 and 16:9
 x:y aspect ratio no matter how big or small the width is divided
into x units of equal length
 And the height measured using the same length unit
 The height will be

3. Screen Ratios
 16:9 (1.77:1) (16:9 = 42:32) is an aspect ratio
 with a width of 16 units and height of 9.
 Since 2009, it has become the most common aspect ratio for sold televisions and
computer monitors
 also the international standard format of HDTV, Full HD, non-HD digital television
and analogue widescreen television.

4. Screen Ratios
 1.85:1 and 2.39:1
 These are the most common aspect ratio used today in the
presentation of films in movie theatres

5. Screen Ratios

6. Screen Ratios