Achieving an Excellent Visual Presentation
posted in Bricks and Mortar Business |Shows can be difficult at the best of times when there’s a lot riding on the result, so the last thing you would like to be troubling about is the audio visual element. In this article I’ll present some basic guidelines that will help you set the room layout so you can achieve the highest quality projection from your show.
General Guide-Lines
Viewing
* For optimum viewing, the audience should be seated within:
* +30 degrees of a line perpendicular to the screen’s centre.
* They should be seated no closer then twice the image height.
Note: (If this is not possible perhaps consider multiple viewing options for the audience).
Type of Content
* Entertainment – The last row should be no further than eight times the image height.
* Corporate – The last row should be to six times the image height.
* Critical Applications – The last row should be four times the image height
Setting the Screen
To avoid obstruction of viewing he bottom of the screen should be approximately four feet above the floor. If the seats is staggered, or if the floor is raked you can adjust this appropriately. Try to avoid setting the screen to high. The ergonomics associated with comfortable viewing indicate no spectator should have to revolve their head more than +30 degrees from straight ahead, or lean their head no more than 25degrees from horizontal.
Seating
The design of the seats is important so viewers can gain full sight of the projection. Frequently the staggered seating arrangement is most fitted for most scenarios. Overall they have to be in rows, with a minimum unrestricted horizontal clearance between plumb lines from the front of an unoccupied seat to the back of the seat in front. This clearance may alter, but is typically sixteen inches ( 400mm ). Aisles must be provided so that there are less than 7 seats between any one seat and an aisle. The entry and exit doors need to be take under consideration when coming up with the layout of the seats. The layout needs to engineered to:
* Allow for easy of enter into the room
* Allow for quick exit in the event of an emergency
* The row contains no more than 100 seats;
* Each doorway serves no more than three rows.
* Aisles must terminate in a cross-aisle.
Front or Rear Projection?
There are a variety of factors that will decide whether front or rear projections are most suitable for your shows.
Front Projection
* Front Projection can generally provide a wider viewing-angle than rear projection. It requires: Controlled lighting (ambient light must be kept off the screen to eliminate a reduction in contrast ratio).
* Requires either a projection room at the rear of the theatre, or a platform or mount for the projector(s) out in the theatre. Note that this latter is a potential noise source.
* The projection geometry must be carefully worked out to get the best compromise between image keystoning and blockage of the light path by the audience.
* Must be accessible for maintenance. A projection booth must be dust free (positive pressure preferred), and have adequate ventilation.
Rear Projection
- Requires space behind the screen. Mirrors may be used to reduce the required depth. Must be accessible for maintenance.
- Can be viewed with higher levels of room illumination, and is less immune to “wash out” by ambient lighting.
- Rear Projection Generally has a narrower viewing-angle than front projection – better for long, narrow rooms.
- Rear projection room must be dust free, and have adequate ventilation.
To choose whether front or rear projection will enhance your show, ask ‘What type of presentation do iwant to give’ and “What is the purpose of the show’. If for example the presentation is “canned” you can consider either front or rear projection. If a live talker is interacting with the show, rear projection is best so the spokesperson can engage with the images without being in the projector’s light trail. Additionally, the higher allowable room illumination allows for note-taking, and so on.
Screen Width
Identify your minimum screen height based totally on the distance to your farthest spectator and your ceiling height. This figure may be adjusted based on the application ( e.g. : an entertainment application will require abigger than minimum size screen for impact ).
ADA Requirements
Where needed agreements will have to be made for visitors who require wheelchair accessibility, and / or who have visible or hearing impairments The accessibility and size of these spaces is defined as :
A minimum number of aisle seats will be required to have either no aisle-side armrest or an aisle-side armrest that folds up. Certain further signage may be required. Your sound system will require the addition of a hearing-assisted system. Your emergency systems may require the addition of strobe signals or visual messaging systems. Your video and other visual show systems may require captioning.
Miscellaneous Considerations
Equipment location
Is vital to avoid any damage. This is usually, but not always, located at the projector ( s ). This gear may include projection controllers, a show controller, video equipment, and audio gear.
Acceptable power supply
don’t forget to provide adequate electrical power for this equipment and the projector ( s ). Do not forget to allow passage for speaker cables, control signals, for example. For boardrooms and meeting rooms you will also want to provide accessible sources ( like VCR’s and DVD players ).
Aesthetics or Theme
* Does it require the loudspeakers and other equipment be concealed?
* How is the presentation started?
* Automatically,
* Audience-demand,
* Host-demand, and live presenter (may require random-access control or other interactivity).
Whether your show is for the boss or for amassive corporation, taking a second to plan how you would like to supply the data can make a significant difference to your audience. So take a minute a review what you are wanting to assert, how you would like to point out it and how is the best way for your audience to get it. It might make the difference between wining that new job or losing it.
For more information about Audiovisual Equipment Sales Mandurah or Jukebox Hire in Rockingham and stage hire services, visit the Peel AV website today.
Article by John Black
