WARNING: Technically explicit material. If you are technically challenged or if such material offends you, please do not continue reading this post.
Let me talk about blue.
I have heard comments from several people that blu-ray discs are not such a great improvement over DVD. They have tried both and thought DVD is pretty good and blu-ray is slightly better. If this is the case, is it worth buying discs which are two or three times in price; and an expensive player to play these discs?
True. The jump in quality may not be as much as we experienced when we switched from VHS to DVD.
Still blu-ray is technically a much superior format with more than two million pixels for each picture frame. This is roughly six times that of DVD. This results in higher resolution allowing to display finer details in the picture. The audio track alone on a blu-ray disc may take as much space as an entire DVD. (Audio on blu-ray will be the subject of another future post)
In order to enjoy this superior picture quality, you should make sure of the following.
1. Your eyesight is perfect or you are wearing glasses or contact lenses to give you perfect vision from your seat. (read the previous post)
2. You are sitting close enough to the screen. Ideally, you should not sit more than one and a half times the screen width. This approximately equals to 1.3 times the screen size. For example if your TV is only 32” size, you should not be more than 42” (three and a half feet) away from it. That is too close compared to what we are used to with our older TVs. Also it is uncomfortably close in a typical family room layout. Normally we sit 8 to 12 feet away from TV irrespective of the screen size. At that distance, your eyes cannot resolve finer details on a 32” TV displaying high definition video. If you are watching low quality standard definition video, sitting that far away is perfectly OK. But for blu-ray, pull your seat closer to the TV. Or get a bigger TV. Even better will be a projector and a screen. If you have a 73” TV, sitting at a distance of 8 feet is OK for watching blu-ray. In my theater the screen size is 11.5 feet and the front row is around 13 feet from the screen. This is perfect for HD. But for watching regular DVDs, I move the rear row which is 19 feet away from the screen. If you are watching blu-ray disc on a small TV (less than 40”) and if you are sitting far away (more than five feet) you may not be able to appreciate the difference between blu-ray and a good DVD.
3. Your player, receiver and TV (projector) should not degrade the video quality during de-interlacing, up-converting and video processing. If you have a 1080P TV try disabling all the video processing in the player, the receiver and the TV. Since most of the blu-ray discs are authored at 1080P resolution this will give you the cleanest picture. If up-conversion or de-interlacing is needed, find out which component in your video chain does the job the best and use it. Most of the mid/high-end units have excellent video processing circuits.
4. All blu-ray discs are not created equal. For some discs, video transfer was done so badly that the quality is similar to or inferior to DVD. Fortunately, most of the new releases have excellent video quality. Do not judge the format by watching a bad disc.
Blu-ray is the highest quality video source available to consumers today. It can beat HDTV broadcast, cable HD and satellite HD. If you take care of the above you can enjoy the glory of this format and appreciate the improvement over regular DVDs.