Re: From the sublime to the ridiculous?

[Trevor Cunningham <trevor@xxxxxxxxxxxxxxxx>]

Not knowing a thing about the physics involved, I'm forced to ask questions:

1. Does the proximity of the lights to each other make a difference?
2. How many stops of underexposure does one lamp produce?
   

ADavidhazy wrote:

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