6 (2 stops four times, so 8 lamps are needed, 8-2=6) Chris -----Original Message----- From: owner-photoforum@xxxxxxxxxxxxxxxxxx [mailto:owner-photoforum@xxxxxxxxxxxxxxxxxx] On Behalf Of ADavidhazy Sent: 18 November 2009 21:45 To: List for Photo/Imaging Educators - Professionals - Students Subject: From the sublime to the ridiculous? A little more photo talk FYI - my students struggled with the answer to this question. How would you or your students do? QUESTION: If two lamps provide a level of illumination that produces two stop underexposure of a given scene, how many ADDITIONAL lamps are needed to provide a level of illumination that will result in a properly exposed scene? 1 2 3 4 6 8 circle one choice To find out the answer (you can work out the reasons!) (or ask!) follow this link: http://people.rit.edu/andpph/a-pix/lamps-1.jpg BTW, I have another hoky question for you: How wide is 35mm film? andy - andpph@xxxxxxx
