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		| I think I know where you are going...  e.g. an addon program to winplotter that would allow you to scan your 5 test films and the program (once calibrated) would read the 21 steps of each processed film and import that data to winplotter and 'poof' a full graphical presentation of your test results.  yes it could be fairly easily done, however you need 4 things,1 programming abilty 2 time to do the programming 3 research and developing time 4 demand for the product....If the last was there surely the first 3 would follow.  As it goes we have a great tool already in BTZS that once mastered will afford the student of B&W photograph signifigant progress. 
 Miles
 p.s. GIMP is a great tool also
 
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