Easy just did it, forced PS3 to 720p and watched the same Blueray.
Even from 2m+ away on a 40' the difference is fidelty is easily noticable. The texture of surfaces is so much more detailed especially on close ups.
For example in a headshot scene in HD you can see any general imperfections on someones skin, in Full HD you can see the individual hair folicals on an unshaven face very clearly.
Thanks for the input. This is something that I'm particularly interested in. I really think your eyesight plays a role. Remember those tests you need to do when you do your Learner's Licence test. Now I reckon that those who score higher would be able to more easily see the differences between 720p and 1080p on a 40inch+ at 2m+, while some may even be able to see the difference on a 32inch at 2m.
Thats what I used to claim and were many times shot down by the Internet pseudo scientists and video experts that claim the difference and state that the HD ready displays are good enough as you would not see a difference at 3Meter+. Playing a 720p v 1080p video trailer and them pause both at the exact same spot at a detail point like a face or detailed object clearly shows the difference. If you think you will not notice it at normal playing speed or viewing distance then you fool yourself as your brain still perceive the one better than the other due to the detailed depth and color presentation. The 1080p generally seems sharper and more defined.
I always ask them then, if that is the case then use a 1080p+ LCD for PC and super GPU cards and why the issue running Crysis at super resolution, I always get such contrasting and unique arguments it's a laugh. Normally they will then refer you to the Internet bible that has an article that gives viewing distance required for specific screen size. Now I remember my late grandma used to sit closer to the TV so she can see better, that confirms my argument that you may sit where it pleases you most, there is no specific required viewing distance.
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