Originally posted by 2351HD No you are right you don't. But it can be a mind game working out how many changes you have to make to get the OS to work when you primarily use the camera on a tripod.
I don't have any OS lenses nor a 645z but I think I understand Pentax menus. It seems to me if most of my work was on a tripod I would set as a default OS off (using the switch), SR off (using the Menu).
If I then used the camera in a hand-held situation with an OS lens I would switch the lens. I'd need to remember to check the lens switch whenever I mounted an OS lens - that's a 'personal memory' default.
For a non-OS lens I would switch the camera. If SR-Off is the default Menu setting and the 'Remember Setting' option is enabled, wouldn't merely turning off the camera return it to your default state when you turn it back on? That's a 'camera memory' default.
Maybe I'm missing something.