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| suezl9 | 2009-01-04 11:34 |  
| yes,i use lighttools to optimize the lens QtfL'su: but i  put  at most 4 Parameters in once time,that can make the optimiztion go on well GP+=b:C{E
 and if you set the Target is the total lum.,that u can set the total no.of the light be less than 10000,that can make the optimiztion  go quick
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