[Radiance-general] Illuminance and coloured lights

[loscotec at libero.it]

Mmm.. I see.. Thank you very much.. but...

what actually is depreciation? 

Should I run the command "ies2rad -m 1.1764706 -t fluorescent lamp.ies" to have right illumination ? If this is right, is there a reason why ies2rad does not do it automatically? 

If it isn't right, are Calculux and Dialux using badly lights ? 15 % illuminance less is really something.. !!

And, there is some documentation about all this stuff ? It would be an interesting chapter for my thesys I guess..


Sorry for the many question and for my ignorance. 

Lucio



 .Greg Ward wrote:
.> Hi Lucio,
.>
.> The lamp color data also includes depreciation factors, which probably 
.> account for the 10% difference.  I assume the "white" value is larger.
.Indeed, the multiplier for incandescent (which I believe white is 
.aliased to) is .95, and the multiplier for fluorescent is .85...
.
.These lamp specs can be found in the file "lamp.tab", usually living in 
.the /usr/local/lib/ray directory.
.
.----------------------------------
.  Rob Guglielmetti
.www.rumblestrip.org
.
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