Digital BW, The Print

Joe,

A print exposed in a room to 'daylight' isn't usually exposed to daylight, 
unless all your windows are open. It's been filtered through a window 
usually, a sheet of glass that removes most of the damaging UV. To expose a 
print to daylight, you have to take it out-of-doors, which is not a normal 
habitat of photographs.

Indoors, prints are exposed to glass-filtered daylight, incandescent lights, 
fluorescent lights, halogen lights, etc.

----- Original Message ----- 

Joe Davajon wrote:


> since Wilhelm's tests are based on fluorescent lighting, they in no
> way reflect accurately what we can expect for print life for our
> prints which are exposed to daylight which is much stronger lighting.