Re: 18:9 aspect ratio
Or 2:1
Just one of those things. Screen widths have for some years generally been referred to as ratios to nine. It helps visualise the differences without having to convert to a common base, though there are some anomalies:
- 640x480, 720x576 for TV or 800x600 and 1024x768 for computers is 4:3 is 12:9
- 854x480 or 1024x576 is 16:9 (these are what SD TV is scaled to when anamorphic widescreen is used - i.e. non-square pixels)
- the intermediate format 14:9 was once popular
- 1440x1080 was once a common 12:9 "high definition" format, also used with non-square pixels to give "high definition" 16:9
- 1280x720, 1600x900, 1920x1080 are all of course 16:9
- Many "widescreen" films are presented in 21:9
- On the other hand, that old stalwart 1280x1024 is actually 5:4 which is an ungainly 11¼:9
- and 1280x800 or 1920 x 1200 (common with projectors I find, though not so common with monitors, worse luck) are 16:10
I thank you.
M.