[Radiance-general] Re: making my own ies file

[Chris Foster]

Hello Christian,

Thanks for getting back to me, much appreciated.

The photometric calculator (PC) Arri has looks nice but isnt really much help when trying to make an ies file. I have printed off a graph from the PC and have used a ruler to try and get some angle and brightness values for use in my ies file but it cant imagine that its very accurate.
The light i physical and want to model have is the ARRI Daylight Compact 4000W (not the theatre one) with a fresnal lens. HMI 4000 W/SE G38.
I want to model it in spot, midflood and flood focus range.

For my spot focus my draft ies looks as below

TILT=NONE

1 [lumens per lamp] 1 12 1 1 2 -.376 0 0 
1 1 4000
0 0.5 1.5 3 4 5 6 7.5 9 11 17 90
0
1880000 1800000 1600000 1000000 600000 400000 250000 120000 100000 60000 0 0

i dont know what value i should use for the lumens per lamp, any suggestions? from what you know am i doing anything else wrong??

Thanks for your time

Chris






-----Original Message-----
From: radiance-general-bounces at radiance-online.org
[mailto:radiance-general-bounces at radiance-online.org]On Behalf Of
Christian Fusenig
Sent: 03 August 2006 11:31
To: radiance-general at radiance-online.org
Subject: [Radiance-general] Re: making my own ies file


Hi Chris,

Arri doesn't provide IES or EULUMDAT data for their luminaires, but they 
have a photometric calculator on their website.
I measured four different types of luminaires for my thesis and created 
IES files, tell me which one you want, maybe i can help you.
Regards,

Christian

-- 

Christian Fusenig
Dipl.-Ing. Medientechnik
Beim Schlump 27/07
20144 Hamburg
mobil: 0179/5975845


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