T1015 Transmission 10-Step Specifications
Step       Target       Tolerance        % Light Transmission *% Light Transmission *  
1 .05 .02 89.13 100  
2 .20 .02 63.10 71  
3 .35 .02 44.67 50  
4 .50 .02 31.62 36  
5 .65 .03 22.39 25  
6 .80 .03 15.85 18  
7 .95 .03 11.22 12.5  
8 1.10 .04 7.943 9  
9 1.25 .05 5.623 6.25  
10 1.40 .06 3.981 4.5  

*.05 film base is assumed to have 100% transmission*