Quote Originally Posted by Chan Tran View Post
With today fast microprocessor it's not difficult to build such a meter but you would have to program in the reciprocity characteristic of the film you use as they are all different. But then as film use isn't that much popular any more it would be hard to recoup the development cost.
So, you can use a basic LunaPro and the reciprocity chart from your film's datasheet, or develop a meter containing a microprocessor. To borrow a line from Thomas Earnshaw, it seems like going around back of a house and breaking open the back door while the front door stands open. That is, finding the most complex solution available for a dirt-simple problem.