Technical Tips for Presentations

Slide brightness

It's a good idea to preview the Workshop slides to check for any slides that appear too dark. Ideally, this should be done using the same LCD projector and computer in the same room and lighting conditions that will be used to teach. If slides appear too dark, there are solutions available:

  1. Control the ambient lighting in the room.
    Lowering the overall lighting in the room will help make the projected image on the screen look much brighter. Dim overhead lights if possible. If the presentation room has windows, lower the blinds to reduce the amount of light in the room.
    See http://www.projectorian.com/tipsonbrightness.html for more information.

  2. Projector brightness
    The overall brightness of a projector is usually dependent on the state of its lamp. If the projector lamp is old and near the end of its life, the amount of light it is able to produce will be severely diminished. If possible, use a projector with a relatively new lamp and strong light output.
    See http://www.guidesandtutorials.com/lcd-projector-bulb.html for more information.

  3. What to do if things still look too dark
    If you have done all you can do to lower the ambient light and the projected image is still too dark, you may need to try some other adjustments. Most projectors allow some degree of adjusting the calibration settings. While it is always best to leave these adjustments to the experts, you may find yourself in a desperate situation. The easiest option to look for would be an 'automatic quality adjustment' setting in the projector's menu. This should do a good job getting the projector back to a baseline setting in case it had been adjusted in the past. If you don't have that option, or need to do more adjustments, look for menu settings that control brightness and contrast (or gamma) and adjust them to your liking.