How to Achieve a Professional Visual Presentation
Shows can be hard at the best time when there’s a lot riding on the result, so the very last thing you wish to be troubling about is the audio visual element. In this article I will present some basic guidelines that will help you set the room layout so you can accomplish the very best quality projection from your display.
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 roughly 4 feet above the floor. If the seating is staggered, or if the floor is raked you can adjust this in an appropriate way. Try avoiding setting the screen to high. The ergonomics associated with cushty viewing indicate no spectator should have to rotate their head more than +30 degrees from straight ahead, or tilt their head not more than 25degrees from horizontal.
Seating
The planning of the seats is important so viewers can gain full sight of the projection. Often the staggered seating arrangement is most fitted for most eventualities. Overall they have got 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 16 inches ( 400mm ). Aisles must be provided so that there are less than seven seats between any one seat and an aisle. The exit and entry doors must be take into account when coming up with the layout of the seating. The layout desires 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 range of factors that can determine 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).
* 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 room must be dust free, and have adequate ventilation.
- 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.
- Available in flexible & rigid materials. A rigid screen is more expensive than a front projection screen, and has size restrictions.
To choose whether front or rear projection will reinforce your display, ask ‘What sort of presentation do iwant to give’ and “What is the point of the show’. If for instance the presentation is “canned” you can consider either front or rear projection. If a live talker is interacting with the presentation, rear projection is best so the spokesman can have interaction with the photographs without being in the projector’s light trail. In addition, the higher allowable room illumination allows for note-taking, and so on.
Screen Width
Determine your minimum screen height based on the distance to your farthest spectator and your ceiling height. This figure could be changed based on the application ( e.g. : an entertainment application will need a larger than minimum size screen for impact ).
ADA necessities
Where needed agreements will have to be made for guests who need access for wheelchairs, and / or who have visual 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 extra signage may be needed. Your sound system will need the addition of a hearing-assisted system. Your emergency systems may need the addition of strobe signals or visual messaging systems. Your video and other visual show systems may need captioning.
Miscellaneous Considerations
Equipment location
Is vital 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 kit, and audio equipment.
Acceptable power supply
do not forget to provide adequate electrical power for this hardware and the projector ( s ). Do not forget to allow conduit for speaker cables, control signals, etc . For boardrooms and meeting rooms you may also wish 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 presentation is for the boss or for a large corporation, taking a second to plan how you want to supply the info can make a big difference to your audience. So take a moment a review what you are wanting to assert, how you want to say it and how is the best way for your audience to get it. It may make the difference between wining that new job or losing it.
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Article by John Black