The higher the resolution, the more diminished the return will be.
Wha?
Watching 480p vs HD sourced material on a native HD display (720p/1080p) will reveal a slightly better HD picture (pending your tv is over 32" and you're sitting 4-5 feet away). Now try the same thing with 480i vs 480p and you will be blown away by the difference.
VHS had 240 lines of resolution, DVD has 480 lines (interlaced) and Blu-ray offers 1080 lines (progressive). "Progressive" DVD players convert interlaced DVD data to progressive signals which can yield more fluid playback on a good TV panel, but it's digital enhancement, plain and simple. Not that that's a bad thing if it's pleasing to your eye. Note: by "HD sourced material" I presume you refer to 1080p Blu-ray material, not the (often) highly compressed 720p or 1080i cable or satellite signals.
Like I said 480p (DVD) was the real revolution, blu-ray is a slight upgrade to this. It just so happens that tv broadcasters never jumped on the 480p bandwagon and waited for HD... if you had widescreen sports broadcast to your tv in 480p you wouldn't appreciate the jump to HD nearly as much.
I agree, DVD's were revolutionary in terms of improved picture quality, multi-channel Dolby/DTS sound, ease of use and interactive features.
DVD's offer 480 lines of of native
interlaced resolution (480 "viewable" lines), Blu-ray offers 1080 lines of true progressive resolution. That's 3 times the amount of data and with far less compression. Is it three times better? That is in the eyes of the beholder. My opinion is it's
easily twice as better looking as the best looking anamorphic DVD. Like DVD, Blu-ray titles greatly depend on the quality of the transfer & amount of compression applied, the Blu-ray player being used, the HD panel and just as importantly how well calibrated the panel is. Blu-ray also improves on a host of problems associated with DVD's and also offers interactive online features.
My eyes are just fine thank you.
But if you're happy buying the $100 monster HDMI cables from Future Shop to go with your new 1080p tv (which is soooo much better than the 720p model you're replacing it with.. after all the guy at Future Shop wouldn't lie to you right?)
There's no need to throw away that kind of money. Google monoprice and check out their cables. They're just as good.
and blu-ray player then go ahead... you just spent a whole lot of money for something that is slightly better than watching dvd's on a 720p set (of similar quality) over your trusty old component cables. That's my point...
It can be debated for pages the merits of a 1080p over a 720p panel however if one is considering purchasing a 50" panel or larger, 1080p is arguably the best choice.
Stating that Blu-ray is "slightly better" than DVD is just not true. Blu-ray is capable of jaw-dropping images, nothing that DVD can even begin to approach on larger sized panels. Anyone serious about home theatre will recognize that the difference between DVD and a Blu-ray is as dramatic as VHS was compared to DVD.
I have given many friends demos by syncing up a DVD on my $1200 Sony progressive DVD player (component cables) to the same Blu-ray film (i.e. Kill Bill/Baraka/Blade Runner/Elizabeth etc.) on my PS3 sitting approximately 7' from the screen and then flipping back and forth to compare. This yields extremely enthusiastic responses. Those who were previously unconvinced about the merits of Blu-ray are converts after they see how great it's capablilties are. I have a very good panel (far from "top of the line") a 1080p Panasonic 50" plasma which I calibrated using the "Digital Video Essentials High Definition" Blu-ray disc. THX optimizers, which are on some Blu-ray discs, work well too.