JR1 wrote:
Well I have never used dof preview as I know exactly what DOF I can achieve from any given ap.
Mirror lockup I use any in astrophotography, focus points I have only used the centre one since my EOS10D, custom functions I have no use for most, on buttons and what ones I do use are set in the menu, as for spot, average etc metering, been doing that for 30 years