I am not on the current release. But in past releases, if you enter a number of analysis rays greater than the number in the file, the entry will default to the total number of rays in the file. Below the file contains 1E6 rays, but I entered 1E15 as a number well over any reasonable value. If you want to trace fewer rays, it is important to set Randomize? to 1, since many ray files contain rays in some systematic order.
You don’t have to keep increasing the analysis rays. Just try to enter an impossibly high number and the entered value will default to the total number of rays in the file. 😀
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