Presentation Techniques 1: Environment and Projection
The environment in which you will present may not always be ideal.
We may have to present in a very bright environment. Or the projector may be nearing the end of its life. But regardless of the circumstances, we are responsible for making a successful presentation.
In this article, we consider the ambient factor of the presentation.
The amount of photons falling on the surface gives us the measure of illumination, we call it Light Flux. This flux is a very important criterion based on the projector we are going to present. The ANSI Lumen value of the projections pretty much commands us what the theme we will use in the presentation will be, and we do not have a say in this matter. Because our presentation will not even appear when beautifully prepared presentations with dark backgrounds meet with mediocre projectors.
Example of a slide that incurs the wrath of the bright environment and poor quality projector:
Now that we are all secret agents, smartphones, smartwatches, etc. If we know where we are going to present, we can detect the projector beforehand and photograph it to google-ing:
I would like to touch on ANSI Lumens a little in order to minimize the risks that the projection may create.
ANSI Lumens;
- For dark environments: 1000–2000
- For environments such as office, classroom: 2000–3500
- For open areas: 5000 should be.
But please remember, the base values are the values that are at the “manageable” level for that environment. If we are going to make a presentation in projections at the level of “manageable”, our presentation background should be light. The ideal would be white, of course.
The photo below clearly shows the difference between the projectors, all 3 in good condition, the presentation environment you will encounter will likely be worse than the leftmost photo:
If you want to exaggerate a little more, you can look at the LLMF (Lamp Lumen Maintenance Factor) chart. If we can estimate how many hours the device has been operated after knowing the type of lamp in the projection, we can understand how much the efficiency has dropped by looking at the LLMF graph. For example, LED projectors expire after 50 thousand hours of operation. (When the efficiency rate reaches 70%, the projector dies.)
If we have a chance to try, let’s try, if not, let’s avoid the risk.
If you are curious about lighting, which also creates the working logic of projectors, I leave a link here.
To continue the training: Presentation Techniques 2: Contrast and Hierarchy
