Opticist.org

hi,

i was wondering how we could use the software in order to calculate the displacement of a specific point. the displacement is small(in term of xe-2 mm).

we applied small spots on a test material, we took 2 pictures, before and after the traction experiment. the problem is that the displacement is so small that it is not  obvious to choose the same point even with the zoom option.

can the software be that accurate to give exact results?