Digital BW, The Print

but in Europe our masters are trying to remove tungsten lighting from 
the options, which may make it more difficult.

On 01/12/2011 15:38, C D Tobie wrote:
>
>
> Low K values are directly related to low luminance levels; the rods in 
> the eyes kick in at these low levels. So there are multiple factors to 
> consider in proofing lights:
>
> Full spectrum lighting, which can come at multiple color temps: 
> tungsten and daylight both offer even, broad spectrum response, but at 
> different balances.
>
> Multiple color temps, to check for metameric (color constancy) effects.
>
> Appropriate luminance levels at each of those color temps, if you want 
> to see actual color balanced results for each, rather than just 
> checking for metamerism.
>
> And bad light sources; to mercury vapor etc, to show what images will 
> look like under lighting which does NOT offer a full spectrum.
>
> I find tungsten, daylight fluorescent, and skylight (blue sky from a 
> north skylight) to be the three best for checking color constancy with 
> a new system, but the only two I find a constant need for are tungsten 
> and daylight.
>
> C. David Tobie
>
>
>
> 

-- 
mike finley photography
http://www.mikefinley.co.uk



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