This seems to be becoming a de facto standard for front projection home theaters also. Get Movies. There is also a closet that can house the receiver, etc. Visual acuity is the term used to express the clarity or sharpness of the human vision. For example, in my setup, my sofa/recliner is 100cm deep, and my eyeball is about 75cm from its front edge. So if I casually measure the distance from the sideboard to the seat as 2m which warrants UHD/4K, my actual viewing distance is 3m so I may as well just have a standard HD display. 5. For viewing movies, THX (Tom Holman and George Lucas’s company for movie standards) recommends a viewing angle of 36 degrees. Bill - The idea of painting a screen, or building a screen yourself is perfectly acceptable. Let us call < BDC angle a and < ADC angle b. This matches quite closely with CEDIA’s 43 degree viewing angle recommendation for 2.4:1 ‘Cinemascope’ content as per CEB-23. For reference 43 degrees is 3x picture height using a 2.35:1 screen. Viewing Distance, Viewing Height, and Screen Size. Most people are comfortable watching TV between this distance and half this distance. and enjoying a movie marathon of your favorite flicks. So with a seat-to-screen distance of 2m, my eyeball-to-screen distance is 2.75m. As the old saying goes "all work and no Horizontal viewing angles. The screen in our demo room is 50 degrees 16:9 (1.78:1) aspect ratio and I think it’s workable but some people do find it a bit large! The viewing angle ‘sweet spot’ seems to be around 45-50 degrees where SMPTE, THX and 20th Century Fox recommendations converge. If you are going to watch the TV alone (which is highly unlikely for a home theater setup) the horizontal angle wouldn’t matter that much. I won’t discuss the merits of the wider aspect ratios, such as 2.35 at this time, but will leave that open for another Q&A. Again, movie theaters are supposed to follow this standard, but you can bet some theaters have back rows that are too far away. However, you need to have the middle of the TV screen at eye level for an optimal and comfortable viewing experience. In a room of your size I do not think you can fit two rows of recliners, unless one is slammed against a wall (which is very bad for audio), so maybe a single row plus bar seating is a better bet. Paul Vail has been a professional audiovisual engineer since 1999. Thank you in advance, for any and all advice. 52 degrees is within the front third for sure. ), For the 1.78 aspect ratio, the field angles are: There is nothing like kicking back in your most comfortable recliner and enjoying a movie marathon of your favorite flicks. Let D be the distance the person is standing from the base of the wall. Hi Nyal, thankyou for your excellent info on your sight, a really great resource! However, if you were to exceed the visual acuity limit, the picture quality from an HDTV will appear similar to a traditional TV of the same screen size. Never would advise anyone to follow them. Personal preference is therefore an important factor and should be a prime consideration when laying out your home theater. However, this formula will provide you with a rough idea of the distances. Using trigonometry, we know therefore . Viewing Distances based on Visual Perception: These distances are calculated based on the resolving power of the human eye, or visual perception. Due to the smaller screen sizes and viewing distances in a home theater the viewing angle changes much faster than it would do in a cinema. A movie theater (American English), cinema (British English), or cinema hall (Indian English), also known as a picture house, the pictures, picture theatre or the movies, is a building that contains auditoria for viewing films (also called movies) for entertainment. For viewing movies, THX (Tom Holman and George Lucas’s company for movie standards) recommends a viewing angle of 36 degrees.  SMPTE suggests the best viewing angles in a theater fall within the 35 to 55 degree range.  Again, for some perspective, this puts the ideal distance from a 52” set at 5.8’ or less for viewing movies. The optimal height is calculated from the center because most of the action takes place in the center third of the TV or screen. If the layout requires you to do so, make sure to a tilting TV bracket to adjust the TV to an optimal viewing angle. The best way to find out the optimal TV height is trial and error. A home theater is typically too small to get a perfectly sized screen for both rows of seating, but the immersion and quality can be outstanding regardless of the size chosen. Viewing angle: Based on the inputs, this is the viewing angle or arc for your set up. Much better to measure all the way to the reclined position, then add some walking room as the room affords it. You can use the following formula to calculate the viewing distance having a horizontal viewing angle of 40 degrees. How far you sit from the screen, measured in feet. With one caveat..which we will get to in a bit. I would argue, that the proper measurement should be with the recliners in their fully reclined position.

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