Guys many BluRay and DVD's for that matter list 16:9 and 2:40 or 2:35:1. Why do they list two aspect ratios when the aspect ratio of the movie is obviously the latter?

Guys many BluRay and DVD's for that matter list 16:9 and 2:40 or 2:35:1. Why do they list two aspect ratios when the aspect ratio of the movie is obviously the latter?

On DVD 16:9 is almost always followed by the word "enhanced" or something to that effect - which is a way of saying that the disc is formated for a widescreen TV (which is 16:9 in shape). See Wiki on Anamorphic Widescreen (http://en.wikipedia.org/wiki/Anamorphic_widescreen)

On Blu-ray, no matter the aspect ratio, the image is always within a 16:9 frame. A 2.35 or 2.40:1 film has black bars encoded as part of the image within the full 1.78:1(16:9) ratio.

On DVD 16:9 is almost always followed by the word "enhanced" or something to that effect - which is a way of saying that the disc is formated for a widescreen TV (which is 16:9 in shape). See Wiki on Anamorphic Widescreen (http://en.wikipedia.org/wiki/Anamorphic_widescreen)

On Blu-ray, no matter the aspect ratio, the image is always within a 16:9 frame. A 2.35 or 2.40:1 film has black bars encoded as part of the image within the full 1.78:1(16:9) ratio.

Yeah I understand the difference in aspect ratios/black bars etc, just wasn't sure why they said 16:9 then the true aspect ratio...but that makes sense now. Thank you :)