Re: PHOTO-3D digest 1332

[P3D KENNETH LUKER <KLUKER@xxxxxxxxxxxxxxxxxxxxxxx>]

> "Correct" exposure certainly is a matter of taste.  One can totally change
> the color values of a film by underexposing slightly.  I've heard people
> say that Fuji Velvia (rated ASA 50) is "really" an ASA 64 film that they
> deliberately down-rate so that it is consistently under-exposed, and
> therefore brings out the deep colors.  
>     -Greg

I may be missing something.  Wouldn't using an ASA 64 rated film as 
though it were ASA 50 result in slightly OVER exposing it, rather 
than under-exposing?  The amount of light sent to ASA 50 film to 
make a perfect exposure would be somewhat greater than the amount of 
light required to give a perfect exposure on ASA 64 film, so if the 
settings are for 50 but the film is 64, the film would be overexposed.
Ken Luker_______________________________________________________________

Kenneth Luker, Assistant Director
Systems and Technical Services
Marriott Library
University of Utah
Salt Lake City, Utah
KLUKER@xxxxxxxxxxxxxxxxxxxxxxx


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