Level Visual
May 4th, 2011
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How to Achieve a Professional Visual Presentation
Displays can be hard at the best time when there is a lot riding on the result, so the very last thing you wish to be troubling about is the audio visible component. In this article I’m going to present some basic guidelines that will help you set the room layout so you can accomplish the very best quality projection from your presentation.
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 4 feet above the floor. If the seating is staggered, or if the floor is raked you can adjust this accordingly . Try avoiding setting the screen to high. The ergonomics associated with comfortable viewing indicate no spectator should have to rotate their head more than +30 degrees from straight ahead, or lean their head no more than 25degrees from horizontal.
Seating
The look of the seating is important so viewers can gain full sight of the projection. Frequently the staggered seating arrangement is most suitable for most eventualities. Overall they have got to be in rows, with the minimal unobstructed horizontal clearance between plumb lines from the front of an unoccupied seat to the back of the seat in front. This clearance may vary, but is typically 16 inches ( 400mm ). Aisles must be provided so that there are less than seven 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 wants to built 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 spread of factors that can decide whether front or rear projections are most fitted 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
- Rear Projection Generally has a narrower viewing-angle than front projection – better for long, narrow rooms.
- Can be viewed with higher levels of room illumination, and is less immune to “wash out” by ambient lighting.
- Available in flexible & rigid materials. A rigid screen is more expensive than a front projection screen, and has size restrictions.
- Requires space behind the screen. Mirrors may be used to reduce the required depth. Must be accessible for maintenance.
- Rear projection room must be dust free, and have adequate ventilation.
To judge whether front or rear projection will enhance your show, ask yourself ‘What kind of presentation do I want to give’ and “What is the purpose of the presentation’. If for instance the display is “canned” you can consider either front or rear projection. If a live talker is interacting with the show, rear projection is best so that the spokesperson can engage with the images without being in the projector’s light path. Additionally, the higher acceptable room illumination allows for note-taking, for example.
Screen Width
Determine your minimum screen height based on the distance to your farthest spectator and your ceiling height. This figure may be changed based on the application ( e.g. : an entertainment application will need a bigger than minimum size screen for impact ).
ADA necessities
Where required arrangements must be made for guests who need wheelchair accessibility, and / or who have visible or hearing impairments The accessibility and size of these spaces is outlined 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 extra signage may be required. Your sound system will need 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 presentation systems may need captioning.
Miscellaneous Considerations
Equipment location
Is very important to avoid any damage. This is usually, but not necessarily, found at the projector ( s ). This gear may include projection controllers, a show controller, video hardware, and audio hardware.
Acceptable power supply
remember to provide satisfactory electrical power for this equipment and the projector ( s ). Do not forget to permit conduit for speaker cables, control signals, and so on. For boardrooms and meeting rooms you will also wish to provide accessible sources ( such as 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 manager or for a large concern, taking a second to plan how you would like to deliver the information can make a major difference to your audience. So take a second a review what you are wanting to point out, how you would like to say it and how is the best way for your audience to receive it. It could make the difference between wining that new job or losing it.
For more information about Audiovisual Equipment Hire Rockingham or Jukebox Hire in Rockingham and lighting hire rockingham, visit the Peel AV website today.
Article by John Black
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