BlueStar said:
Rydian said:
It's not ratio, it's pure resolution.
So high end mobile devices like the Desire HD and the iPhone 4/5, which display at a higher resolution than the eye can see, aren't actually HD simply because due to their screen size the resolution is only around 640x960?
Surely the ratio of screensize to pixels must come into play when deciding if a device's 'R' is classified as 'H'? If you put a piece of card over your HDTV which only shows 800x600 of the pixels and look at a face in the cut-out portion, are you no longer seeing the image in 'HD'?
HD is 1280x720 pixels or higher.
Anything less is EDTV (480 progressive scan pixels or higher), or SDTV (less than 480i)
It has absolutely nothing to do with screen size.
If you want to go make a ratio about how nice it looks relative to screen size and resolution, go ahead. It's not HD.