I put it in the iMenu and towards the top in MyMenu on the Z9 and will test it out this week at Orlando Wetlands and Lake Apopka…although I'll have to deliberately remember to try it rather than just plan on doing my normal crop in post workflow. Assuming that works…or more likely even if it's not quite as easy I'll learn to do it that way so the Z8 will work the same…because none of the other buttons have functions I'm willing to give up…although I am considering putting FX/DX on the ISO button assuming it will go there since I'm almost always in Auto ISO and the only times I'm not in that mode are for waterfalls and then I'm using ISO 64 but setting it manually via iMenu or MyMenu is easy.I have the LFn2 button programmed for FX-DX switch but it may end up in the i menu