ProjectorCentral.com
WORLD'S LARGEST
PROJECTOR RESOURCE
Celebrating 20 Years
Audio General
Top 10 Find a Projector Reviews Throw CalculatorCalc Buyer's Guide Expert Blogs Projector Forums

Use this form if the comment contains offensive or otherwise inappropriate content. An email message will be sent to our moderators who will take appropriate action if necessary.

Write your message to the moderator below:

(Enter the numbers exactly as they appear to the left)

Comment text appears below:
Bruno, the lens and its ability to pass light is obviously a factor in the measured brightness of any projector. For those with interchangeable lenses, our own measurements will always reflect whatever lens the manufacturer supplied with the sample we tested. Typically it's a general use zoom, which we'll measure at its widest and most telephoto positions to ascertain the degree of light loss at the telephoto position.