The optimum TV screen size is directly related to the distance seems to have – but there are other factors as well as the need to be considered.
Viewing distance is only a matter of personal taste?
Sitting near the big TV screen and you can see the image build-up structure – scanning lines or pixels forming the image – so annoying your attention and enjoy your hometheater.info” title=”buy home theater”>home theater experience. However, sitting too farthe effects are lost.
There are different opinions on how best to determine the optimum TV viewing distance for a specific screen size. Just go to the movies and soon realize that it's all a matter of personal preference – some sat down. Others would skip the first set, as they prefer a bigger picture and a broader perspective, while others were chosen at random is just somewhere between these two extremes.
The truthis that there is no scientific rules her. This does not mean that there are no guidelines to follow that you should be buying a big screen or an aspiring hometheater.info” title=”buy home theater”>home theater room in your schedule.
SMPTE Recommendations and the THX certification standards:
The Society of Motion Pictures and Television Engineers (SMPTE) recommends that the screen size for home theater use should take a 30 degree field of view – in the horizontal plane – for the public. Alternatively, the ideal TVViewing distance should be such that the width of the screen takes a 30 degree angle from the field of view.
This viewing angle of 30 degrees seems to have been adopted by many regarded as the standard for home theater and cinema.
This SMPTE guideline is also in line with the THX certification standards recommended in this that the last row of seats should be at least 26 degrees angle of view, and while recommending an optimum viewing angle of 36 degrees.
Thisbelieves that within these limits better perspective of the viewer is immersed in the action movie itself.
Vision System limitations:
And 'the question of TV viewing distance on visual acuity. These do not represent the optimum viewing distance – rather, you lose the maximum distance of observation on some image details are going.
Technically, the visual acuity is a measure of 'eye and shows the spatial resolutionangular size of the smallest detail that the visual system of a person to resolve possible. A person with 20/20 (or 6.6 if it is expressed in meters) normal vision can resolve a spatial pattern of a corner a minute of arc angle ie 1/60th degree separated from the eyes when viewed at 20 meters. In other words, a person with normal 20/20 vision can identify an object with a height of 1.76 mm to 20 feet way.
In terms of TV viewing distances, these point to thesome of the images will not be solved by the vision system viewer.
So Wie translate this in terms of practice?
A few rules-of-thumb can help to describe the practice guidelines set out above. These rules for viewing distance to the reference screen width instead of the screen diagonal and therefore apply to both 4:3 and 16:9 display.
A general rule for TV viewing distance on the SMPTE and visual acuity is based is that the guidelinesnearest TV viewing distance between you and your big-screen television should be about twice the limit screen width (more precisely 1.87 x screen width for a 30 degree angle spanning), while the greatest distance not more than five times the width of the screen.
This rule of thumb you should have a fairly good approximation for your TV viewing distance. It is not necessarily the perfect home theater viewing distance but rather the limits within which the TVViewing distance should theoretically be the area of trouble.
In other words, the points closer to twice the width of the screen size, and image scanning lines, and any other video artifacts will be visible even intrusive – leading to distractions that will only ruin your movie. Move farther than is 5 times the width of the screen and the vision system can no longer be able to solve all the photos show.
But …
It 'also important to realize,that these minimum and maximum distances of view should be the light of the definition video signal to be seen.
A complete solution hdtv (1080i, 1920×1080) supports a closer viewing distance of standard analog television. Thus, while twice the screen width would be the ideal TV viewing distance for hdtv, TV would be a bit 'too close to the standard, the latest case, three times the screen width would be a better solution.
The five-time screenAmplitude of the maximum range, while more than adequate for a normal analogue TV picture is a bit 'far away for a person to see the width of the fine detail supported by hdtv picture – a 53-7 once the screen is another practical limit for maximum distance vision in the case of hdtv.
These rules of-thumb work best with large screens in the range of 42 inches and above.
When it comes to using a regular Standard DefinitionAnalog TV in the home theater, or 40 to 36 "/" diagonal, the optimum viewing distance is between 8 feet and 12 feet. TV smaller than 36 inches are not big enough to be used in applications for home theater use, not their smaller screen size, the desired effect on the viewer.
Vertical viewing angle and height of the screen:
For optimal viewing should be the eye of the beholder at the center of the screen.
Maximum viewing angles: theHome theater set-up, if this is not possible to recommend the SMPTE guidelines for the maximum vertical angle measured at seated eye from the front seat to the center line to the top of the projected image should not exceed 35 degrees Celsius.
This is not the best viewing angle, but the limit beyond which the viewer is subjected to a strain of neck increased.
That maximum vertical angle is always in the front row as this represent the extentextreme point of view.
Minimum angle: while there seem to be special studies SMPTE or THX guidelines in this regard, but have shown that when the screen size occupies less than 15 degrees vertical field of view of the viewer, as the image appears small.
Practical Considerations:
In a typical home theater setup, you do not really worry about neither the maximum vertical viewing angle, the angle of minimum verticalVision for a cinematic experience effectively.
If the recommended TV viewing distance of twice the width of the screen (as described above, according to Directive SMPTE 30-degree horizontal field of view) think that you should automatically be filled with the smallest angle. The reason is that there is a fixed ratio between the height and width of the screen to your home theater aspect ratio of 16:9 or 4:3 screen.
Further more, in atypical home theater would be very difficult, the maximum vertical viewing angle on the passing of a neck strain is greater.
Considering that most home theater rooms are approximately 10 feet (3 meters) high, the resulting vertical viewing angle and within the maximum standard of 35 degrees in the detailed guidance SMPTE – all you need to do is just within twice the screen width guideline for your eyes to stay separate.
