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p.2 #2 · HD: The Media is the Message | |
High Definition is basically any display that is capable of showing >720 lines of vertical resolution. This is what they mean when you hear a tv being described as 720p or 1080p, etc. The number is the vertical resolution. So, if you're running your computer monitor at 1024x768, its in HD. We've been working in HD for quite a while now actually. Its the ability to transfer that resolution to other mediums that has taken some time to develop (i.e. televisions). To display an HD signal, you need a display that can handle high pixel counts and a pathway to deliver that information, whether its a digital disk, or a direct digital connection.
CRT Monitors have been able to show high definition content for years, because they could accept the digital pathway from your computer that is needed to pass the information. With LCDs and Plasmas getting larger and larger, it became more feasible to translate our TV viewing to high definition. We just needed the pathway for the information, thus the advent of digital cable.
Us, as photographers are shooting digital photos well beyond HD quality. You would have to drop the resolution of your photograph below 720 on the vertical side to drop below the HD threshold. To put that into perspective, a 1 megapixel image is considered high definition. If you look at a 1 megapixel photo on a 1024x 768 digital display, it will look perfect. You wont be able to zoom in, but as is it will fill the display nicely at 100%. A handheld tablet computer could get by with files that in our eyes are "low res", but when displayed on the device will look great. That eliminates the issue of print piracy because, as we all know, a 1 MP file wont print very large at all. If it's still a hot button, a little hard drive encryption would eliminate the problem completely.
As for slideshows, the DVD medium was designed with standard definition television sets in mind. The resolution is 480 in the vertical plane. This was fine for older CRT televisions, but on the newer LCD and Plasma sets, the quality will look inadequate because the tv set has a better resolution than that of the DVD. Not the other way around. The solution is a digital disk with a higher resolution output to match today's TV's. These are Blu Ray and HD DVD. But as with all new tech, we have to wait for the players to come down in price as well as the burners. This happened when the DVD format was originally released, now you can get a DVD player for 30 bucks.
Sorry for the rambling post, but hopefully it clears some stuff up.
- Dan
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