RMTF (PipsPro vs pylinac)

I was comparing PipsPro vs pylinac, and pylinac’s RMTF values are roughly double to PipsPro. Is there a reason my pylinac values are higher?

Thanks,
Landon

mtf_2019-09-16_eb2b69.png

Hard to say without knowing how PipsPro calculates theirs (should be in the manual). Pylinac calculates it per equation 1.12 here. Note that the calculation of Amin and Amax could be different even if the same equation is used.