[pure-silver] Re: Basic question on light

At 04:27 AM 3/30/2005, Sauerwald Mark wrote:
>I have a basic question which I am having a hard time
>finding an anwer to, and I am certain that the
>luminaries on this list will be able to help me out.
>
>If I use my spot meter, and it tells me - for example
>to expose for 1/60 at f16 for 100ASA - what is the
>intensity of the light at that point in lumens?



A spot meter reads the reflected light. And that depends upon the color and 
texture of the surface you are reading. I do not believe there is an easy 
correlation between a reflected reading of an unknown surface and lumens. I 
believe you have to directly read the light output itself in order to get 
lumens.

IMHO,

Jim 

=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your 
account (the same e-mail address and password you set-up when you subscribed,) 
and unsubscribe from there.

Other related posts: