On 3/6/2018 9:48 PM, Alain wrote:
>> Quick question:
>>
>> How do I convert the units of ExposureFactor to my scene?
>>
>> In my scene, 20 units = 1 foot.
>>
>> Thanks!!
>>
>>
>> Mike
>>
> 
> The formula use meter, a meter = about 39 inches, or 3 feet and 3 inches 
> (3.25 feet in 1 m).
> There are 10.5625 square feet in a square meter.
> 

I still don't know what the effect on the value of ExposureFactor should be.


//  ExposureFactor A conversion factor between the luminance of the
//                 sky calculated (in cd/m2) to POV values. As the sky
//                 luminance can be very high (around 10000 cd/m2)
//                 then an ExposureFactor around 1e-5 will be needed to
//                 get a correct exposure when looking at the sky


Mike

Post a reply to this message