Originally Posted by I am a Zither Zather Zuzz
Can you point to any 4:3 displays advertised as HD?
1) Modern HD is defined by 720p of horizontal lines and leaves the number of vertical lines open as the width varies. After 1080p became a reality and with HD already taken 1080p became known as FHD for Full High Definition. This follows the same pattern as 720p.
2) Can you point to any displays that advertised Retina Display before the iPhone 4 came out? Of course not, but that doesn't mean Apple wasn't allowed to use the term for marketing purposes.
3) There are at least 3 video standards that use "HD" in their name and are 1440x1080 resolution. The Panasonic DVCPRO HD 1080, HDV 1080i/1080, and
Sony HDCAM (1080).
PS: Note that Full Aperture Native 2K has a resolution of 2048 × 1556 for an aspect ratio of 1.32:1. The rumoured iPad will be 2048x1536 with a 1.33: asepect ratio. Both are generically listed as 4:3 aspect ratio because they are that close.